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Электронный компонент: 854

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25 Locust St, Haverhill, Massachusetts 01830 Tel: 800/252-7074, 978/374-0761 FAX: 978/521-1839
e-mail: sales@freqdev.com Web Address: http://www.freqdev.com
0.1 Hz to 102.4 kHz
8-Bit Programmable
854 Series
2" x 4"
4-Pole Filters
Description
The 854 Series are digitally programmable low-pass
and high-pass active filters that are tunable over a
256:1 frequency range. 854 filters are available with
any one of six standard factory-set tuning ranges up
to 102.4 kHz. These units contain 8 CMOS logic
inputs that can be operated in a transparent or
latching mode.
All 854 Series models are convenient, low profile,
easy to use fully finished filters which require no
external components or adjustments. They feature
low harmonic distortion, and near theoretical phase
and amplitude characteristics. 854 filters operate
from non-critical 12 to 18 Vdc power supplies,
have a 10 k (min.) input impedance, a 10 (max.)
output impedance and offer dc voltage offset
adjustment.
Features/Benefits:
Digitally programmable corner frequency allows
selecting cut-off frequencies specific to each
application.
Plug-in ready-to-use, reducing engineering design
and manufacturing cycle time.
Factory-set tuning range, no external clocks or
adjustments needed.
Broad range of transfer characteristics and corner
frequencies to meet a wide range of applications.
Low profile design, ideal for rack mount
installations.
Applications
Anti-alias filtering
Data acquisition systems
Communication systems and electronics
Medical electronics equipment and research
Aerospace, navigation and sonar applications
Sound and vibration testing
Real and compressed time data analysis
Noise elimination
Signal reconstruction
Programmable Specifications
. . . . . . . . . . . . .
Page
Digital Tuning & Control . . . . . . . . . . . . . . . . . . . . . . 2
Available Low-Pass Models:
. . . . . . . . . . . . . . . . . . .
854L4B
4-pole Butterworth . . . . . . . . . . . . . . . . . . 3
854L4L
4-pole Bessel . . . . . . . . . . . . . . . . . . . . . . 3
854L8Y2 4-pole Cheby (0.2 dB Ripple) . . . . . . . . . . 3
854L8Y5 4-pole Cheby (0.5 dB Ripple) . . . . . . . . . . 3
Available High-Pass Models:
. . . . . . . . . . . . . . . . . .
854H8B
4-pole Butterworth . . . . . . . . . . . . . . . . . . 4
854H8Y2 4-pole Cheby (0.2 dB Ripple) . . . . . . . . . . 4
854H8Y5 4-pole Cheby (0.5 dB Ripple) . . . . . . . . . . 4
General Specifications:
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin-out/package data. . . . . . . . . . . . . . . . . . . . . . . . . 5
8-Bit Programmable Filters
854 Series
Digital Tuning &
Control Characteristics
25 Locust St, Haverhill, Massachusetts 01830 Tel: 800/252-7074, 978/374-0761 FAX: 978/521-1839
e-mail: sales@freqdev.com Web Address: http://www.freqdev.com
2
MSB
---
---
---
---
---
---
LSB
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
0
0
0
0
0
0
0
0
f
max
/256
0
0
0
0
0
0
0
1
f
max
/128
0
0
0
0
0
0
1
1
f
max
/64
0
0
0
0
0
1
1
1
f
max
/32
0
0
0
0
1
1
1
1
f
max
/16
0
0
0
1
1
1
1
1
f
max
/8
0
0
1
1
1
1
1
1
f
max
/4
0
1
1
1
1
1
1
1
f
max
/2
1
1
1
1
1
1
1
1
fmax
Bit
Weight
fc
Corner
Frequency
+Vs
OUT
-Vs
D
D
D
D
GND
D
D
D
D
C
P
IN
Bottom View
Os
4
5
3
2
1
0
6
7
Pin-Out Key
IN
Analog Input Signal
D
7
Tuning Bit 7 (MSB)
OUT Analog Output Signal
D
6
Tuning Bit 6
GND Power and Signal Return
D
5
Tuning Bit 5
"P"
Transition Polarity Bit
D
4
Tuning Bit 4
"C"
Tuning Strobe Bit
D
3
Tuning Bit 3
+Vs
Supply Voltage, Positive
D
2
Tuning Bit 2
-Vs
Supply Voltage, Negative
D
1
Tuning Bit 1
Os
Optional Offset Adjustment
D
0
Tuning Bit 0 (LSB)
Digital Tuning Characteristics
The digital tuning interface circuits are two 4042 quad CMOS
latches which accept the following CMOS-compatible inputs:
eight tuning bits (D
0
- D
7
), a latch strobe bit (C), and a transition
polarity bit (P).
Filter tuning follows the tuning equation given below:
f
c
= ( f
max
/256 ) [ 1 + D
7
x 2
7
+ D
6
x 2
6
+ D
5
x 2
5
+ D
4
x 2
4
+ D
3
x 2
3
+ D
2
x 2
2
+ D
1
x 2
1
+ D
0
x 2
0
]
where D
1
- D
7
= "0" or "1", and
f
max
= Maximum tuning frequency;
f
c
= corner frequency;
Minimum tunable frequency = f
max
/256 (D
0
thru D
7
= 0);
Minimum frequency step (Resolution) = f
max
/256
Data Control Specifications
Data Control Lines
Functions
Latch Strobe (C)
Transition Polarity (P)
Data Control Modes
Mode 1
P = 0; C = 0
frequency follows input codes
P = 0; C = 0
>
frequency latched on rising edge
Mode 2
P = 1; C = 1
frequency follows input codes
P = 1; C = 1
fl
frequency latched on falling edge
Input Data Levels
(CMOS Logic)
Input Voltage (Vs = 15 Vdc)
Low Level In
0 Vdc min.
4 Vdc max.
High Level In
11 Vdc min.
15 Vdc max.
Input Current
High Level In
- 10
-5
mA typ.
-1
mA max.
Low Level In
+10
-5
mA typ
.
+1
mA max.
Input Capacitance
5 pF typ
7.5 pF max.
Latch Response
Data Set Up Time
1
25 nS
Data Hold Time
2
50 nS
Strobe Pulse Width
80 nS min.
Input Data Format
Frequency Select Bits
Positive Logic
Logic "1" = +Vs
Logic "0" = Gnd
Bit Weighting
(Binary-Coded)
D
0
LSB (least significant bit)
D
7
MSB (most significant bit)
Frequency Range
256 : 1, Binary Weighted
Notes:
1. Frequency data must be present before occurrence of strobe edge.
2. Frequency data must be present after occurrence of strobe edge.
854 Series
4-Pole
Low-Pass Filters
25 Locust St, Haverhill, Massachusetts 01830 Tel: 800/252-7074, 978/374-0761 FAX: 978/521-1839
e-mail: sales@freqdev.com Web Address: http://www.freqdev.com
8-Bit Programmable
1. Unit to unit match for the same transfer function, set to the same frequency and operating configuration, and from the same manufacturing lot.
3
Model
854L8B
854L8L
854L8Y2
854L8Y5
Product Specifications
Transfer Function
4-Pole,
4-Pole,
4-Pole, Chebychev,
4-Pole, Chebychev,
Butterworth
Bessel
0.2 dB Ripple
0.5 dB Ripple
Size, Model 1 & 2
4.0" x 2.0" x 0.6"
4.0" x 2.0" x 0.6"
4.0" x 2.0" x 0.6"
4.0" x 2.0" x 0.6"
Model 3 thru 6
4.0" x 2.0" x 0.4"
4.0" x 2.0" x 0.4"
4.0" x 2.0" x 0.4"
4.0" x 2.0" x 0.4"
Range f
c
0.1 Hz to 102.4 kHz
0.1 Hz to 102.4 kHz
0.1 Hz to 102.4 kHz
0.1 Hz to 102.4 kHz
Theoretical Transfer
Appendix A
Appendix A
Appendix A
Appendix A
Characteristics
Page 7
Page 2
Page 12
Page 15
Passband Ripple
0.0 dB
0.0 dB
0.20 dB
0.05 dB
(theoretical)
DC Voltage Gain
0 0.1 dB max.
0 0.1 dB max.
0 0.1 dB max.
0 0.1 dB max.
(non-inverting)
0 0.05 dB typ.
0 0.05 dB typ.
0 0.05 dB typ.
0 0.05 dB typ.
Stopband
Attenuation Rate
24 dB/octave
24 dB/octave
24 dB/octave
24 dB/octave
Cutoff Frequency
f
c
2% max.
f
c
2% max.
f
c
2% max.
f
c
2% max.
Stability
0.01% /C
0.01% /C
0.01% /C
0.01% /C
Amplitude
-3 dB
-3 dB
-3 dB
-3 dB
Phase
-180
-121
-231
-245
Filter Attenuation
0.67 dB 0.80 f
c
1.86 dB 0.80 f
c
-0.20 dB 0.80 f
c
-0.43 dB 0.80 f
c
(theoretical)
3.01 dB 1.00 f
c
3.01 dB 1.00 f
c
3.01 dB 1.00 f
c
3.01 dB 1.00 f
c
30.0 dB 2.37 f
c
30.0 dB 3.50 f
c
30.0 dB 1.89 f
c
30.0 dB 1.80 f
c
40.0 dB 3.16 f
c
40.0 dB 4.72 f
c
40.0 dB 2.46 f
c
40.0 dB 2.33 f
c
Phase Match
1
0 - 0.8 f
c
2 max.
0 - f
c
2 max.
0 - 0.8 f
c
2 max.
0 - 0.8 f
c
2 max.
1 typ.
1 typ.
1 typ.
1 typ.
0.8 fc - 1.0 f
c
3 max.
0.8 f
c
- 1.0 f
c
3 max.
0.8 f
c
- 1.0 f
c
3 max.
1.5 typ.
1.5 typ.
1.5 typ.
Amplitude Accuracy
0 - 0.8 f
c
0.2 dB max.
0 - f
c
0.2 dB max.
0 - 0.8 f
c
0.2 dB max.
0 - 0.8 f
c
0.2 dB max.
(theoretical)
0.1 dB typ.
0.1 dB typ.
0.1 dB typ.
0.1 dB typ.
0.8 f
c
- 1.0 f
c
0.3 dB max.
0.8 f
c
- 1.0 f
c
0.3 dB max.
0.8 f
c
- 1.0 f
c
0.3 dB max.
0.15 dB typ.
0.15 dB typ.
0.15 dB typ.
Total Harmonic
< - 100 dB typ.
< - 100 dB typ.
< - 88 dB typ.
< - 88 dB typ.
Distortion @ 1 kHz
Wide Band Noise
200
mVrms typ.
200
mVrms typ.
200
mVrms typ.
200
mVrms typ.
(5 Hz - 2 MHz)
Narrow Band Noise
50
mVrms typ.
50
mVrms typ.
50
mVrms typ.
50
mVrms typ.
(5 Hz - 100 kHz)
Filter Mounting
Assembly
FMA-03A
FMA-03A FMA-03A FMA-03A
25 Locust St, Haverhill, Massachusetts 01830 Tel: 800/252-7074, 978/374-0761 FAX: 978/521-1839
e-mail: sales@freqdev.com Web Address: http://www.freqdev.com
8-Bit Programmable
854 Series
4-Pole
High-Pass Filters
4
1. Unit to unit match for the same transfer function, set to the same frequency and operating configuration, and from the same manufacturing lot.
Model
854H8B
854H8Y2
854H8Y5
Product Specifications
Transfer Function
4-Pole,
4-Pole, Chebychev,
4-Pole, Chebychev,
Butterworth
0.2 dB Ripple
0.5 dB Ripple
Size, Model 1 & 2
4.0" x 2.0" x 0.6"
4.0" x 2.0" x 0.6"
4.0" x 2.0" x 0.6"
Model 3 thru 6
4.0" x 2.0" x 0.4"
4.0" x 2.0" x 0.4"
4.0" x 2.0" x 0.4"
Range f
c
0.1 Hz to 102.4 kHz
0.1 Hz to 102.4 kHz
0.1 Hz to 102.4 kHz
Theoretical Transfer
Appendix A
Appendix A
Appendix A
Characteristics
Page 27
Page 31
Page 33
Passband Ripple
0.0 dB
0.20 dB
0.50 dB
(theoretical)
Voltage Gain
0 0.2 dB to 100 kHz
0 0.2 dB to 100 kHz
0 0.2 dB to 100 kHz
(non-inverting)
0 0.5 dB to 120 kHz
0 0.5 dB to 120 kHz
0 0.5 dB to 120 kHz
Power Bandwidth
120 kHz
120 kHz
120 kHz
Small Signal Bandwidth
(-6 dB) 1 MHz
(-6 dB) 1 MHz
(-6 dB) 1 MHz
Stopband
Attenuation Rate
24 dB/octave
24 dB/octave
24 dB/octave
Cutoff Frequency
f
c
2% max.
f
c
2% max.
f
c
2% max.
Stability
0.01% /C
0.01% /C
0.01% /C
Amplitude
-3 dB
-3 dB
-3 dB
Phase
-180
-231
-245
Filter Attenuation
40 dB 0.31 f
c
40.0 dB 0.41 f
c
40.0 dB 0.43 f
c
(theoretical)
30 dB 0.42 f
c
30.0 dB 0.53 f
c
30.0 dB 0.56 f
c
3.01 dB 1.00 f
c
3.01 dB 1.00 f
c
3.01 dB 1.00 f
c
0.02 dB 2.00 f
c
-0.07 dB 2.00 f
c
-0.25 dB 2.00 f
c
Phase Match
1
f
c
- 100 kHz 3 max.
f
c
- 100 kHz 3 max.
f
c
- 100 kHz 3 max.
1.5 typ.
1.5 typ.
1.5 typ.
Amplitude Accuracy
1.00 - 1.25 f
c
0.3 dB max.
1.00 - 1.25 f
c
0.3 dB max.
1.00 - 1.25 f
c
0.3 dB max.
(theoretical)
0.15 dB typ.
0.15 dB typ.
0.15 dB typ.
1.25 f
c
-100 kHz 0.2 dB max.
1.25 f
c
-100 kHz 0.2 dB max.
1.25 f
c
-100 kHz 0.2 dB max.
0.1 dB typ.
0.1 dB typ.
0.1 dB typ.
Total Harmonic
< - 100 dB typ.
< - 88 dB typ.
< - 88 dB typ.
Distortion @ 1 kHz
Wide Band Noise
400
mVrms typ.
400
mVrms typ.
400
mVrms typ.
Narrow Band Noise
100
mVrms typ.
100
mVrms typ.
100
mVrms typ.
(5 Hz - 100 kHz)
Filter Mounting
Assembly
FMA-03A
FMA-03A
FMA-03A
Specification
(25C and Vs 15 Vdc)
854 Series
Pin-Out and Package Data
Ordering Information
We hope the information given here will be helpful. The information is based on data and our best knowledge, and we consider the information to be true and accurate. Please read all statements,
recommendations or suggestions herein in conjunction with our conditions of sale which apply to all goods supplied by us. We assume no responsibility for the use of these statements,
recommendations or suggestions, nor do we intend them as a recommendation for any use which would infringe any patent or copyright.
IN-00854-01
DC Offset Adjustment
Vs
- Vs
20 k
W
(Cermet)
Do not connect
if trim is not
required.
OS
Analog Input Characteristics
1
Impedance
10 k
W
min.
Voltage Range
10 Vpeak
Max. Safe Voltage
Vs
Analog Output Characteristics
Impedance (Closed Loop)
1
1
W
typ.
10
W
max.
Linear Operating Range
10V
Maximum Current
2
2 mA
Offset Voltage
3
2
2 mV typ.
20 mV max.
Offset Temp. Coeff.
50
mV/C
Power Supply (
V)
Rated Voltage
15 Vdc
Operating Range
12 to
18 Vdc
Maximum Safe Voltage
18 Vdc
Quiescent Current
4-Pole
13 mA typ.
20 mA max.
Temperature
Operating
-2
0 to +70C
Storage
-25 to +85C
Notes:
1. Input and output signal voltage referenced to supply common.
2. Output is short circuit protected to common.
DO NOT CONNECT TO Vs.
3. Adjustable to zero.
4. Units operate with or without offset pin connected.
854L8B-3
Transfer Function
B - Butterworth
L - Bessel
Y2 - Chebychev (0.2 dB Ripple)
Y5 - Chebychev (0.2 dB Ripple)
Filter Type
L - Low Pass
H - High Pass
Ordering Information
25 Locust St, Haverhill, Massachusetts 01830 Tel: 800/252-7074, 978/374-0761 FAX: 978/521-1839
e-mail: sales@freqdev.com Web Address: http://www.freqdev.com
Model Tuning Minimum
Number
Range (Hz)
Step(Hz)
Case
1
0.1 to 25.6
0.1
M-2
2
1.0 to 256
1.0
M-2
3
10 to 2560
10
M-1
4
100 to 25.6k
100
M-1
5
200 to 51.2k
200
M-1
6
400 to 102.4k
400
M-1
Model Number
e.g.,
Side View
+Vs
OUT
-Vs
D
D
D
D
GND
D
D
D
D
C
P
IN
2.00
0.4
0.6
4.00
Bottom View
M-1
M-2
0.2 min
0.04 Dia.
Os
4
5
3
2
1
0
6
7
4
Filter Mounting Assembly-See FMA-03A
5
Pin-Out & Package Data
25 Locust St, Haverhill, Massachusetts 01830 Tel: 800/252-7074, 978/374-0761 FAX: 978/521-1839
e-mail: sales@freqdev.com Web Address: http://www.freqdev.com
November 2000
Programmable Filters Modules
818, 824, 828, 828BP, 828BR, 854, 858, R854, R858
I. Scope
The following precautions are necessary when handling and installing Frequency Devices
programmable filter modules.
II. Digital Circuit Description
The digital input pins connect directly to 4000 series CMOS logic, such as the 4053 analog switch. The
power supply (Vss) for the digital logic on the module comes directly from the +15 Volt pin on the
module. This sets the threshold voltage at 11.0 V minimum to 15.0 V maximum for a "1" (High) level
and 0.0 V minimum to 4.0 V maximum for a "0" (Low) level. Applying a voltage between 4.0 and 11.0
V will produce unpredictable operation. Connecting 5 Volt or 3.3 V logic devices directly to the filter
module without using a voltage translator will result in erratic operation of the filter.
III. (VERY IMPORTANT) Power-Up and Power-Down Sequence
Do not plug-in or un-plug module while power is applied.
It is imperative that power is
supplied to the + 15 V pin on the filter module before or at the same instance that any digital pin is
pulled High (> 0.0 V). Failure to do this will result in excessive current flowing through the digital input
pin and through a protection diode internal to the 4000 logic, which will result in damage to the module.
The proper power-up and power-down sequence is:
1. Connect filter module ground.
2. Connect filter module +15 V.
3. Connect filter module -15 V.
4. Connect the input signal.
All four of the above steps can also occur simultaneously. Power-down should occur in the reverse
order.
IV. ESD Issues
Like most modern electronic equipment, the modules can be damaged by electrostatic discharge (ESD).
The modules are shipped from the factory in sealed, anti-static packaging and should be kept in the
sealed package prior to mounting on a circuit board. The following additional rules should also be
observed when handling the modules after they are removed from the factory packaging:
1. Only a person wearing a properly grounded wrist strap should handle the modules.
2. Any work surface that the modules are placed on must be properly ESD grounded.
3. Any insulating materials capable of generating static charge (such as paper) should be kept
away from the modules.
Static generating clothing should be covered with an ESD-protective smock.
1
Product Handling
Procedure
Programmable Filter Modules Power Sequence & ESD
Low-Pass
4-Pole
Appendix A
Bessel
2
25 Locust St., Haverhill, Massachusetts 01830
Tel :800/252-7074, 978/374-0761
FAX:978/521-1839
e-mail: sales@freqdev.com
Web Address: http://www.freqdev.com
Fax on Demand: 978/521-5178
Normalized Frequency(f/fc)
Amp (dB)
Normalized Time (1/f sec)
Dela
y (sec)
Normalized Time (1/f sec)
Step Response (V/V)
Frequency Response
Delay (Normalized)
Step Response
0.1
1.0
10.0
2
3 4 5 6 78
2
3 4 5 6 7
-100
-80
-60
-40
-20
0
0.1
1.0
2
3
4
5 6 7 8 9
0.0
0.5
1.0
1.5
0.15
0
1
2
3
4
5
-0.0
-0.2
0.2
0.4
0.6
0.8
1.0
1.2
(sec)
Theoretical Transfer Characteristics
1
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.85
0.90
0.95
1.00
1.10
1.20
1.30
1.40
1.50
1.60
1.70
1.80
1.90
2.00
2.25
2.50
2.75
3.00
3.25
3.50
4.00
5.00
6.00
7.00
8.00
9.00
10.0
1.Normalized Group Delay:
The above delay data is normalized to a corner frequency
of 1.0Hz.The actual delay is the normalized delay divided
by the actual corner frequency (fc).
Actual Delay =
Normalized Delay
Actual Corner Frequency (fc) in Hz
f/fc
(Hz)
Amp
(dB)
Phase
(deg)
Delay
0.00
-12.1
-24.2
-36.3
-48.4
-60.6
-48.1
-53.4
-58.0
-62.0
-65.7
-25.1
-27.6
-30.0
-34.4
-41.9
-12.2
-13.4
-16.5
-19.5
-22.4
-6.37
-7.42
-8.54
-9.71
-10.9
-2.69
-3.01
-3.71
-4.51
-5.39
-1.02
-1.41
-1.86
-2.11
-2.40
0.00
-0.028
-0.111
-0.251
-0.448
-0.705
-315
-321
-326
-330
-333
-267
-275
-281
-291
-305
-212
-219
-235
-248
-259
-166
-177
-187
-195
-204
-115
-121
-133
-144
-156
-72.7
-84.8
-96.8
-103
-109
.021
.016
.012
.009
.008
.089
.076
.065
.049
.031
.211
.194
.158
.129
.107
.295
.280
.263
.246
.228
.332
.330
.325
.318
.308
.336
.336
.335
.334
.333
.336
.336
.336
.336
.336
.336
Low-Pass
4-Pole
Appendix A
Butterworth
7
25 Locust St., Haverhill, Massachusetts 01830
Tel :800/252-7074, 978/374-0761
FAX:978/521-1839
e-mail: sales@freqdev.com
Web Address: http://www.freqdev.com
Fax on Demand: 978/521-5178
(sec)
Normalized Frequency(f/fc)
Amp (dB)
Dela
y (sec)
Normalized Time (1/f sec)
Step Response (V/V)
Theoretical Transfer Characteristics
1
Frequency Response
Delay (Normalized)
Step Response
0.1
1.0
10.0
2
3 4 5 6 78
2
3 4 5 6 7
-100
-80
-60
-40
-20
0
0
1
2
3
4
5
-0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.1
1.0
2
3
4
5 6 7 8 9
0.0
1.0
2.0
1.5
0.15
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.85
0.90
0.95
1.00
1.10
1.20
1.30
1.40
1.50
1.60
1.70
1.80
1.90
2.00
2.25
2.50
2.75
3.00
3.25
3.50
4.00
5.00
6.00
7.00
8.00
9.00
10.0
-62.3
-67.6
-72.2
-76.3
-80.0
-38.2
-41.0
-43.5
-48.2
-55.9
-22.3
-24.1
-28.2
-31.8
-35.1
-12.0
-14.3
-16.4
-18.5
-20.5
-2.21
-3.01
-4.97
-7.24
-9.62
-0.072
-0.243
-0.674
-1.047
-1.555
0.00
0.00
0.00
-0.00
-0.003
-0.017
0.00
-15.0
-30.1
-45.5
-61.4
-78.0
-95.7
-115
-136
-147
-158
-169
-180
-200
-217
-231
-242
-252
-260
-266
-272
-277
-282
-291
-299
-304
-309
-313
-317
-322
-330
-335
-339
-341
-343
-345
.012
.009
.007
.005
.004
.049
.041
.035
.027
.017
.134
.119
.091
.072
.059
.289
.241
.204
.175
.152
.612
.588
.513
.427
.350
.511
.558
.604
.619
.622
.416
.418
.423
.433
.449
.474
1.Normalized Group Delay:
The above delay data is normalized to a corner frequency
of 1.0Hz.The actual delay is the normalized delay divided
by the actual corner frequency (fc).
Actual Delay =
Normalized Delay
Actual Corner Frequency (fc) in Hz
f/fc
(Hz)
Amp
(dB)
Phase
(deg)
Delay
Normalized Frequency(f/fc)
Low-Pass
4-Pole, 0.2 dB Ripple
Appendix A
Chebychev
12
25 Locust St., Haverhill, Massachusetts 01830
Tel :800/252-7074, 978/374-0761
FAX:978/521-1839
e-mail: sales@freqdev.com
Web Address: http://www.freqdev.com
Fax on Demand: 978/521-5178
Normalized Frequency(f/fc)
Amp (dB)
Normalized Time (1/f sec)
Dela
y (sec)
Normalized Time (1/f sec)
Step Response (V/V)
Frequency Response
Delay (Normalized)
Step Response
0.1
1.0
10.0
2
3 4 5 6 78
2
3 4 5 6 7 8
-100
-80
-60
-40
-20
0
0
1
2
3
4
5
-0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.1
1.0
2
3
4
5 6 7 8 9
0.0
1.0
2.0
1.5
0.15
(sec)
Theoretical Transfer Characteristics
1
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.85
0.90
0.95
1.00
1.10
1.20
1.30
1.40
1.50
1.60
1.70
1.80
1.90
2.00
2.25
2.50
2.75
3.00
3.25
3.50
4.00
5.00
6.00
7.00
8.00
9.00
10.0
1.Normalized Group Delay:
The above delay data is normalized to a corner frequency
of 1.0Hz.The actual delay is the normalized delay divided
by the actual corner frequency (fc).
Actual Delay =
Normalized Delay
Actual Corner Frequency (fc) in Hz
f/fc
(Hz)
Amp
(dB)
Phase
(deg)
Delay
-71.9
-77.3
-82.0
-86.1
-89.8
-47.3
-50.2
-52.8
-57.6
-65.5
-30.2
-32.2
-36.7
-40.6
-44.1
-17.7
-20.7
-23.4
-25.8
-28.1
-1.47
-3.01
-6.89
-10.8
-14.5
0.000
0.074
0.199
0.063
-0.443
0.000
0.039
0.129
0.195
0.174
0.074
-347
-349
-351
-352
-352
-334
-336
-338
-341
-345
-294
-300
-306
-310
-313
-214
-231
-257
-274
-286
-113
-135
-162
-178
-196
0.00
-17.3
-35.2
-54.0
-73.4
-93.2
.006
.004
.003
.003
.002
.026
.022
.018
.014
.009
.078
.068
.051
.039
.032
.202
.158
.128
.107
.090
.989
.873
.583
.385
.271
.575
.654
.836
.947
1.02
.478
.487
.509
.533
.547
.553
-316
-319
-324
-328
-331
Low-Pass
4-Pole, 0.5 dB Ripple
Appendix A
Chebychev
15
25 Locust St., Haverhill, Massachusetts 01830
Tel :800/252-7074, 978/374-0761
FAX:978/521-1839
e-mail: sales@freqdev.com
Web Address: http://www.freqdev.com
Fax on Demand: 978/521-5178
Normalized Frequency(f/fc)
Amp (dB)
Normalized Time (1/f sec)
Dela
y (sec)
Normalized Time (1/f sec)
Step Response (V/V)
Frequency Response
Delay (Normalized)
Step Response
0.1
1.0
10.0
2
3 4 5 6 78
2
3 4 5 6 7 8
-100
-80
-60
-40
-20
0
0.1
1.0
2
3
4
5 6 7 8 9
0.0
1.0
2.0
1.5
0.15
0
1
2
3
4
5
-0.0
0.2
0.4
0.6
0.8
1.0
1.2
(sec)
Theoretical Transfer Characteristics
1
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.85
0.90
0.95
1.00
1.10
1.20
1.30
1.40
1.50
1.60
1.70
1.80
1.90
2.00
2.25
2.50
2.75
3.00
3.25
3.50
4.00
5.00
6.00
7.00
8.00
9.00
10.0
1.Normalized Group Delay:
The above delay data is normalized to a corner frequency
of 1.0Hz.The actual delay is the normalized delay divided
by the actual corner frequency (fc).
Actual Delay =
Normalized Delay
Actual Corner Frequency (fc) in Hz
f/fc
(Hz)
Amp
(dB)
Phase
(deg)
Delay
-74.0
-79.4
-84.1
-88.2
-91.9
-49.3
-52.2
-54.9
-59.7
-67.6
-32.1
-34.1
-38.6
-42.6
-46.1
-350
-351
-352
-353
-354
-339
-340
-342
-344
-347
-324
-326
-301
-334
-336
.005
.004
.003
.002
.002
.021
.018
.015
.011
.007
.065
.057
.042
.033
.026
-19.3
-22.4
-25.1
-27.6
-29.9
-1.12
-3.01
-7.61
-12.0
-15.9
-305
-311
-315
-318
-321
0.025
0.072
0.432
0.482
0.062
-226
-245
-272
-288
-298
.173
.134
.108
.089
.075
1.13
.946
.559
.345
.235
0.00
0.087
0.295
0.474
0.463
0.248
-119
-141
-168
-185
-205
0.00
-17.3
-35.7
-55.7
-76.9
-98.2
.578
.647
.881
1.06
1.18
.476
.492
.533
.577
.596
.583
High-Pass
4-Pole
Appendix A
Butterworth
27
25 Locust St., Haverhill, Massachusetts 01830
Tel :800/252-7074, 978/374-0761
FAX:978/521-1839
e-mail: sales@freqdev.com
Web Address: http://www.freqdev.com
Fax on Demand: 978/521-5178
(sec)
Normalized Frequency(f/fc)
Amp (dB)
Theoretical Transfer Characteristics
1
Frequency Response
0.1
1.0
10.0
2
3 4 5 6 78
2
3 4 5 6 7
-100
-80
-60
-40
-20
0
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.85
0.90
0.95
1.00
1.20
1.40
1.60
1.80
2.00
2.50
3.00
4.00
5.00
6.00
7.00
8.00
9.00
10.0
0.00
0.00
0.00
0.00
0.00
0.00
-0.039
-0.017
-0.003
-0.001
0.00
-3.99
-3.01
-0.908
-0.285
-0.100
-17.8
-12.6
-8.43
-6.69
-5.22
-80.0
-55.9
-41.8
-31.8
-24.1
345
330
314
299
282
264
245
224
213
202
191
180
143
118
100
87.6
78.0
61.4
50.7
37.8
30.1
25.1
21.4
18.8
16.7
15.0
.017
.012
.009
.007
.005
.004
.152
.119
.072
.049
.027
.612
.588
.427
.289
.204
.511
.558
.604
.619
.622
.418
.423
.433
.449
.474
1.Normalized Group Delay:
The above delay data is normalized to a corner frequency
of 1.0Hz.The actual delay is the normalized delay divided
by the actual corner frequency (fc).
Actual Delay =
Normalized Delay
Actual Corner Frequency (fc) in Hz
f/fc
(Hz)
Amp
(dB)
Phase
(deg)
Delay
High-Pass
4-Pole, 0.2 dB Ripple
Appendix A
Chebychev
31
25 Locust St., Haverhill, Massachusetts 01830
Tel :800/252-7074, 978/374-0761
FAX:978/521-1839
e-mail: sales@freqdev.com
Web Address: http://www.freqdev.com
Fax on Demand: 978/521-5178
Normalized Frequency(f/fc)
Amp (dB)
Frequency Response
0.1
1.0
10.0
2
3 4 5 6 78
2
3 4 5 6 7 8
-100
-80
-60
-40
-20
0
(sec)
Theoretical Transfer Characteristics
1
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
1.20
1.50
1.70
2.00
2.50
3.00
4.00
5.00
6.00
7.00
8.00
9.00
10.0
1.Normalized Group Delay:
The above delay data is normalized to a corner frequency
of 1.0Hz.The actual delay is the normalized delay divided
by the actual corner frequency (fc).
Actual Delay =
Normalized Delay
Actual Corner Frequency (fc) in Hz
f/fc
(Hz)
Amp
(dB)
Phase
(deg)
Delay
.060
.048
.040
.200
.170
.129
.098
.076
.140
.031
.003
.074
.174
-25.0
-18.6
-12.7
-7.34
-3.01
-89.8
-65.1
-51.1
-40.6
-32.2
21.7
19.3
17.3
60.4
44.5
35.2
29.2
24.9
172
128
111
93.2
73.4
308
296
280
259
231
352
345
337
328
319
.008
.006
.005
.060
.033
.020
.014
.010
.633
.275
.197
.138
.088
.314
.383
.500
.686
.873
.212
.218
.228
.245
.272
High-Pass
4-Pole, 0.5 dB Ripple
Appendix A
Chebychev
33
25 Locust St., Haverhill, Massachusetts 01830
Tel :800/252-7074, 978/374-0761
FAX:978/521-1839
e-mail: sales@freqdev.com
Web Address: http://www.freqdev.com
Fax on Demand: 978/521-5178
Normalized Frequency(f/fc)
Amp (dB)
Frequency Response
0.1
1.0
10.0
2
3 4 5 6 78
2
3 4 5 6 7 8
-100
-80
-60
-40
-20
0
(sec)
Theoretical Transfer Characteristics
1
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
1.20
1.50
1.70
2.00
2.50
3.00
4.00
5.00
6.00
7.00
8.00
9.00
10.0
1.Normalized Group Delay:
The above delay data is normalized to a corner frequency
of 1.0Hz.The actual delay is the normalized delay divided
by the actual corner frequency (fc).
Actual Delay =
Normalized Delay
Actual Corner Frequency (fc) in Hz
f/fc
(Hz)
Amp
(dB)
Phase
(deg)
Delay
.133
.107
.088
.498
.401
.296
.221
.169
.500
.014
.043
.249
.469
-26.8
-20.2
-14.0
-8.13
-3.01
-91.9
-67.6
-53.1
-42.6
-34.1
21.8
19.3
17.3
62.7
45.5
35.7
29.4
25.0
179
133
117
98.2
76.9
317
307
293
274
245
354
347
341
334
326
.008
.006
.005
.065
.035
.021
.014
.010
.693
.271
.199
.146
.095
.263
.326
.440
.651
.946
.174
.179
.188
.203
.226