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
100 Hz to 1.00 MHz
Fixed Frequency
D01 Series
32-Pin DIP
8-, 6-, 4-Pole Filters
Description
The D01 Series of small, fixed-frequency, linear
active DIP filters provide high performance linear,
multi-pole filtering in a compact package, with a
broad range of pole configurations. These
Butterworth and Bessel low-pass filters combine the
excellent performance of linear multi-pole filter
design with the space saving of the dual in-line
package (DIP). Each model comes factory tuned to
a user-specified corner frequency between 100Hz
and 1 MHz. These fully self-contained units require
no external components or adjustments. They
operate with dynamic input voltage range from non-
critical 2.5V to 7.5V power supplies.
Features/Benefits:
Low harmonic distortion and wide signal-to-noise
ratio to 12 bit resolution
Compact DIP design minimizes board space
requirements
Plug-in ready-to-use, reducing engineering
design and manufacturing time
Factory tuned, no external clocks or adjustments
needed
Broad range of pole configurations and corner
frequencies to meet a wide range of applications
Applications
Anti-alias filtering
Data acquisition systems
Video 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
Available Low-Pass Models:
D01L8B
8-pole Butterworth . . . . . . . . . . . . . . .2
D01L6B
6-pole Butterworth . . . . . . . . . . . . . . .2
D01L4B
4-pole Butterworth . . . . . . . . . . . . . . .2
D01L8L
8-pole Bessel . . . . . . . . . . . . . . . . . . .3
D01L6L
6-pole Bessel . . . . . . . . . . . . . . . . . . .3
D01L4L
4-pole Bessel . . . . . . . . . . . . . . . . . . .3
General Specifications:
Pin-out/package data & ordering information . . . .4
Fixed Frequency
D01 Series
8-, 6-, 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
2
Model
D01L8B
D01L6B
D01L4B
Product Specifications
Transfer Function
8-Pole, Butterworth
6-Pole, Butterworth
4-Pole, Butterworth
Size
1.80" x 0.80" x 0.30"
1.80" x 0.80" x 0.30"
1.80" x 0.80" x 0.30"
Range f
c
100 Hz to 1 MHz
100 Hz to 1 MHz
100 Hz to 1 MHz
Theoretical Transfer
Appendix A
Appendix A
Appendix A
Characteristics
Page 9
Page 8
Page 7
Passband Ripple
0.0 dB
0.0 dB
0.0 dB
(theoretical)
DC Voltage Gain
0 0.1 dB max.
0 0.1 dB max.
0 0.1 dB max.
(non-inverting)
0 0.02 dB typ.
0 0.02 dB typ.
0 0.2 dB typ.
Stopband
Attenuation Rate
48 dB/octave
36 dB/octave
24 dB/octave
Cutoff Frequency
f
c
5% max.
f
c
5% max.
f
c
5% max.
Stability
0.02%/C
0.02%/C
0.02%/C
Amplitude
-3 dB
-3 dB
-3 dB
Phase
-360
-270
-180
Filter Attenuation
0.12 dB 0.80 f
c
0.12 dB 0.80 f
c
0.12 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
60.0 dB 2.37 f
c
60.0 dB 3.16 f
c
60.0 dB 5.62 f
c
80.0 dB 3.16 f
c
80.0 dB 4.64 f
c
80.0 dB 10.0 f
c
Phase Match
1
Amplitude Accuracy
1
Total Harmonic
1 kHz
< -80 dB typ.
1 kHz
< -80 dB typ.
1 kHz
< -80 dB typ.
Distortion @ 2.5 V
RMS
100 kHz
< -65 dB typ.
100 kHz
< -65 dB typ.
100 kHz
< -65 dB typ.
Wide Band Noise
250
mVrms typ.
160
mVrms typ.
70
mVrms typ.
(20 Hz - 4 MHz)
Narrow Band Noise
30
mVrms typ.
20
mVrms typ.
20
mVrms typ.
(20 Hz - 100 kHz)
Filter Mounting
Assembly
NA
NA
NA
1. Phase Match and Amplitude Accuracy in the pass band are within 5% max. of the theoretical transfer characteristics.
NA - Not available
D01 Series
8-, 6-, 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
Fixed Frequency
3
1. Phase Match and Amplitude Accuracy in the pass band are within 5% max. of the theoretical transfer characteristics.
NA - Not available
Model
D01L8L
D01L6L
D01L4L
Product Specifications
Transfer Function
8-Pole, Bessel
6-Pole, Bessel
4-Pole, Bessel
Size
1.80" x 0.80" x 0.30"
1.80" x 0.80" x 0.30"
1.80" x 0.80" x 0.30"
Range f
c
100 Hz to 1 MHz
100 Hz to 1 MHz
100 Hz to 1 MHz
Theoretical Transfer
Appendix A
Appendix A
Appendix A
Characteristics
Page 4
Page 3
Page 2
Passband Ripple
0.0 dB
0.0 dB
0.0 dB
(theoretical)
DC Voltage Gain
0 0.1 dB max.
0 0.1 dB max.
0 0.1 dB max.
(non-inverting)
0 0.2 dB typ.
0 0.2 dB typ.
0 0.2 dB typ.
Stopband
Attenuation Rate
48 dB min.
36 dB/octave
24 dB/octave
Cutoff Frequency
f
c
5% max.
f
c
5% max.
f
c
5% max.
Stability
0.02%/C
0.02%/C
0.02%/C
Amplitude
-3 dB
-3 dB
-3 dB
Phase
-182
-155
-121
Filter Attenuation
1.91 dB 0.80 f
c
1.91 dB 0.80 f
c
1.91 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
60.0 dB 4.52 f
c
60.0 dB 5.41 f
c
60.0 dB 8.48 f
c
80.0 dB 6.07 f
c
80.0 dB 7.99 f
c
80.0 dB 15.12 f
c
Phase Match
1
Amplitude Accuracy
1
Total Harmonic
1 kHz
< -80 dB typ.
1 kHz
< -80 dB typ. 1 kHz
< -80 dB typ.
Distortion @ 2.5 V
RMS
100 kHz
< -65 dB typ.
100 kHz
< -65 dB typ. 100 kHz
< -65 dB typ.
Wide Band Noise
250
mVrms typ.
160
mVrms typ.
70
mVrms typ.
Narrow Band Noise
30
mVrms typ.
20
mVrms typ.
20
mVrms typ.
Filter Mounting
Assembly
NA
NA
NA
0.80
0.025 dia.
Side View
Front View
1.80
0.30
0.15 (min)
Specification
(25C and Vs 5 Vdc)
D01 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-00D01-03
DC Offset Adjustment
Vs
- Vs
20 k
W
(Cermet)
Do not connect
if trim is not
required.
OS
Analog Input Characteristics
1
Impedance
250 k
W
min.
Voltage Range
3.5 Vpeak
Max. Safe Voltage
Vs
Analog Output Characteristics
Impedance (Closed Loop)
<1
W
typ.
Linear Operating Range
5V
Maximum Current
2
30 mA
Offset Voltage
3
10
mV max.
Offset Temp. Coeff.
50
mV/C
Power Supply (
V)
Rated Voltage
7.5 Vdc
Operating Range
2.5 to
7.5 Vdc
Maximum Safe Voltage
7.5 Vdc
Quiescent Current
8-Pole
30 mA max.
6-Pole
23 mA max.
4-Pole
15 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.
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
All dimensions are in inches
All case dimensions 0.015"
Grid Dimensions 0.1" x 0.1"
5. How to Specify Corner Frequencies: Corner frequencies are
specified by attaching a three digit frequency designator to the
basic model number. Corner frequencies can range from
100Hz to 1 MHz.
Bottom View
-Vs
OS
OUT
RTN
IN RTN
GND
+VS
4
4
Ordering Information
D01L8B-976 kHz
- 3 dB Corner Frequency
5
e.g., 310 kHz
780 kHz
1 MHz
Transfer Function
B - Butterworth
L - Bessel
No. of Poles
4
6
8
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
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