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Электронный компонент: ZL40123DCE1

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1
Zarlink Semiconductor Inc.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright 2003-2006, Zarlink Semiconductor Inc. All Rights Reserved.
Features
450 MHz small signal bandwidth
1500V/
s slew rate
5.2 mA/channel static supply current
65 mA output current
120 MHz gain flatness to +/- 0.1 dB
8 pin SOIC
Applications
Video switchers/routers
Video line drivers
Twisted pair driver/receiver
Active filters
Description
The ZL40123 is a high speed, dual, current feedback
operational amplifier offering high performance at a
low cost. The device has a very high output current
drive capability of 65 mA while requiring only 5.2 mA of
static supply current. This feature makes the ZL40123
the ideal choice where a high density of high speed
devices is required.
The flat gain response to 120 MHz, 450 MHz small
signal bandwidth and 1500V/
s slew rate make the
device an excellent solution for video applications such
as driving video signals down significant cable lengths.
Other applications which may take advantage of the
ZL40123 superior dynamic performance features
include low cost high order active filters and twisted pair
driver/receivers.
March 2006
Ordering Information
ZL40123/DCA
8 Pin SOIC
Tubes
ZL40123/DCB
8 Pin SOIC
Tape & Reel
ZL40123DCE1
8 Pin SOIC*
Tubes, Bake & Drypack
ZL40123DCF1
8 Pin SOIC*
Trays, Bake & Drypack
*Pb Free Matte Tin
-40
C to +85
C
ZL40123
High Speed, Current Feedback
Dual Operational Amplifier
Data Sheet
Figure 1 - Functional Block Diagram and Pin Connection
7
Out_1
In_n_1
In_p_1
In_p_2
In_n_2
Out_2
V -
ZL40123
V+
1
2
3
4
5
6
8
1
2
ZL40123
Data Sheet
2
Zarlink Semiconductor Inc.
Change Summary
Changes from January 2005 Issue to March 2006 Issue. Page, section, figure and table numbers refer to this
current issue.
Application Notes
Current Feedback Op Amps
Current feedback op amps offer several advantages over voltage feedback amplifiers:
AC bandwidth not dependent on closed loop gain
High Slew Rate
Fast settling time
The architecture of the current feedback opamp consists of a high impedance non-inverting input and a low
impedance inverting input which is always feedback connected. The error current is amplified by a transimpedance
amplifier which can be considered to have gain
where Z
o
is the DC gain.
It can be shown that the closed loop non-inverting gain is given by
where Av is the DC closed loop gain, R
f
is the feedback resistor. The closed loop bandwidth is therefore given by
and for low values of closed loop gain Av depends only on the feedback resistor R
f
and not the closed loop gain.
Increasing the value of R
f
Increases closed loop stability
Decreases loop gain
Decreases bandwidth
Reduces gain peaking
Reduces overshoot
Using a resistor value of R
f
=510
for Av=+2 V/V gives good stability and bandwidth. However since requirements
for stability and bandwidth vary it may be worth experimentation to find the optimal R
f
for a given application.
Page
Item
Change
1
Updated Ordering Information


+
=
o
o
f
f
j
Z
f
Z
1
)
(


+
=
o
o
f
Z
f
fR
j
Av
Vin
Vout
1
f
OL
f
o
o
CL
R
GB
R
Z
f
BW
=
=
ZL40123
Data Sheet
3
Zarlink Semiconductor Inc.
Layout Considerations
Correct high frequency operation requires a considered PCB layout as stray capacitances have a strong influence
over high frequency operation for this device. The Zarlink evaluation board serves as a good example layout that
should be copied. The following guidelines should be followed:
Include 6.8 uF tantalum and 0.1 uF ceramic capacitors on both positive and negative supplies
Remove the ground plane under and around the part, especially near the input and output pins to reduce
parasitic capacitances
Minimize all trace lengths to reduce series inductance
ZL40123
Data Sheet
4
Zarlink Semiconductor Inc.
Application Diagrams
Figure 2 - Non-inverting Gain
Figure 3 - Inverting Gain
6.8uF
0.1uF
0.1uF
6.8uF
Vcc
Vin
Vout
Rin
Ra
Rf
Vee
ZL40123
Ra
Rf
Av
Vin
Vout
+
=
=
1
6.8uF
0.1uF
0.1uF
6.8uF
Vcc
Vin
Vout
Rin
Ra
Rf
Vee
ZL40123
Rb
Ra
Rf
Av
Vin
Vout
-
=
=
ZL40123
Data Sheet
5
Zarlink Semiconductor Inc.
Absolute Maximum Ratings
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate
conditions for which the device is intended to be functional, but specific performance is not guaranteed. For guaranteed
specifications and the test conditions, see the Electrical Characteristics.
Note 2: Human body model, 1.5 k
in series with 100 pF. Machine model, 20
in series with 100 pF.
Note 3: 0.8 kV between the pairs of +INA, -INA and +INB pins only. 2kV between supply pins, OUTA or OUTB pins and any input pin.
Note 4: 100 mA applied to input and output pins to force the device to go into "latch-up". The device passes this test to JEDEC spec
17.
Note 5: Positive and Negative supply transient testing increases the supplies by 20% for 100 ms.
Operating Range
Parameter
Symbol
Min.
Max.
Units
1
Vin Differential
V
IN
1.2
V
2
Output Short Circuit Protection
V
OS/C
See Apps
Note in this
data sheet
3
Supply voltage
V+, V-
6.5
V
4
Voltage at Input Pins
V
(+IN)
, V
(-IN)
V-
V+
V
5
Voltage at Output Pins
V
O
V-
V+
V
6
EDS Protection
(HBM Human Body Model)
(see Note 2)
2
(see Note 3)
kV
7
Storage Temperature
-55
+150
C
8
Latch-up test
100 mA
for 100 ms
(see Note 4)
9
Supply transient test
20% pulse
for 100ms
(see Note 5)
Characteristic
Min.
Typ.
Max.
Units
Comments
Supply Voltage (Vcc)
4.0
6.0
V
Operating Temperature (Ambient)
-40
+85
C
Junction to Ambient resistance
Rth(j-a)
150
C
4 layer
FR4 board
Junction to Case resistance
Rth(j-c)
60
C
4 layer
FR4 board
ZL40123
Data Sheet
6
Zarlink Semiconductor Inc.
Electrical Characteristics
- Vcc=
5 V, T
amb
=25
C(typ.),T
amb
=-40
C to +85
C(min-max), Av=+2V/V,
Rf=510
, Rload=100
unless specified.
Characteristic
Conditions
Typ.
25
C
Min./
Ma.x
25
C
Min./
Max.
40 to
+85
C
Units
Test
Type
1
Frequency Domain Response
-3 dB Bandwidth
Av=+1; Vo < 0.5Vp-p;
Rf=1.5 k
450
-
-
MHz
C
Av=+2; Vo < 0.5Vp-p;
Rf=510
380
-
-
MHz
C
Av=+2; Vo < 5V p-p;
Rf=510
170
-
-
MHz
C
+/- 0.1dB Flatness
Av=+2; Vo < 0.5Vp-p;
Rf=510
120
-
-
MHz
C
Differential Gain (NTSC)
Rload=150
0.01
-
-
%
C
Differential Phase (NTSC)
Rload=150
0.015
-
-
deg.
C
Time Domain Response
Rise and Fall Time
Vout=0.5 V Step
1
-
-
ns
C
Vout=5 V Step
2.8
-
-
ns
C
Settling Time to 0.1%
Vout=2 V Step
6
-
-
ns
C
Overshoot
Vout=0.5 V Step
4
-
-
%
C
Slew Rate
Vout=5 V Step
1500
-
-
V/
s
C
Noise and Distortion
2
nd
Harmonic Distortion
Vout=2Vp-p, 1 MHz
-84
-
-
dBc
C
3
nd
Harmonic Distortion
Vout=2Vp-p, 1 MHz
-85
-
-
dBc
C
Equivalent Input Noise
Voltage
>1 MHz
5.5
-
-
nV
C
Non-Inverting Current
>1 MHz
1.3
-
-
pV
C
Inverting Current
>1 MHz
11
-
-
pA
C
Static, DC Performance
Input Offset Voltage
2.7
6.3
7.7
mV
A
Average Drift
-
-
15
V/deg. C
C
Input Bias Current Non-inverting
2.6
5.6
6
A
A
Hz
Hz
Hz
ZL40123
Data Sheet
7
Zarlink Semiconductor Inc.
Note: Test Types:
(A) 100% tested at 25
C. Over temperature limits are set by characterization and simulation.
(B) Limits set by characterization or simulation.
(C) Typical value only for information.
Average Drift
-
-
6
nA/deg. C
C
Input Bias Current Inverting
7.4
25
28
uA
A
Average Drift
-
-
15
nA/deg. C
C
Power Supply Rejection Ratio
(+ve)
DC
61
58
57
dB
A
Power Supply Rejection Ratio
(-ve)
DC
58
56
55
dB
A
Common Mode Rejection Ratio
DC
54
50
49
dB
A
Supply Current (per Channel)
Quiescent
5.2
6.5
6.7
mA
A
Miscellaneous Performance
Input Resistance (Non-inverting)
8
-
-
M
C
Input Capacitance (Non-inverting)
1
-
-
pF
C
Common Mode Input Range
2.4
2.2
2.0
V
A
Output Voltage Range
Rload=100
2.8
2.7
2.6
V
A
Output Current (max)
65
-
-
mA
C
Output Resistance, Closed Loop
DC
90
-
-
m
C
Characteristic
Conditions
Typ.
25
C
Min./
Ma.x
25
C
Min./
Max.
40 to
+85
C
Units
Test
Type
1
ZL40123
Data Sheet
8
Zarlink Semiconductor Inc.
Typical Performance Characteristics -
T
amb
=25
C, V
supply
=
5 V, Rload=100
, Av=+2V/V,
Rf=510
, unless otherwise specified
.
Non-Inverting Frequency Response
-14
-12
-10
-8
-6
-4
-2
0
2
1
10
100
1000
Frequency (MHz)
Normalised Gain (dB)
-200
-150
-100
-50
0
50
100
150
200
Phase (deg.)
Av =+8
Rf = 150
Av =+4
Rf = 150
Av =+2
Rf = 510
Av =+1
Rf = 1k
Gain
Phase
Vo=0.5Vp-p
ZL40123
Data Sheet
9
Zarlink Semiconductor Inc.
Non-Inverting Frequency Response varying Rf
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
2
10
100
1000
Frequency (MHz)
Normalised Gain (dB)
Rf=390
Rf=250
Rf=700
Rf=510
Vo=0.5Vp-p
Large Signal Gain
-16
-14
-12
-10
-8
-6
-4
-2
0
10
100
1000
Frequency (MHz)
Gain (dB)
Vo = 5V p-p
Vo = 4V p-p
Vo = 1V p-p
ZL40123
Data Sheet
10
Zarlink Semiconductor Inc.
Open Loop Transimpedance Gain and Phase
40
50
60
70
80
90
100
110
120
1.0E+03
1.0E+04
1.0E+05
1.0E+06
1.0E+07
1.0E+08
1.0E+09
Frequency (Hz)
Transimpedance Gain
-240
-210
-180
-150
-120
-90
-60
-30
0
Transimpedance Phase
Transimpedance Phase
Transimpedance Gain
Harmonic Distortion vs Frequency
-100
-90
-80
-70
-60
-50
-40
1
10
100
Frequency (MHz)
2nd & 3rd Harmonic Distortion (dBc)
2nd Harmonic
3rd Harmonic
Vo = 2V p-p
ZL40123
Data Sheet
11
Zarlink Semiconductor Inc.
CMRR
0
10
20
30
40
50
60
70
1.0E+03
1.0E+04
1.0E+05
1.0E+06
1.0E+07
1.0E+08
Frequency (Hz)
Rejection Ration (dB)
T = - 40 degC
T = + 25 degC
T = + 85 degC
PSRR +ve
0
10
20
30
40
50
60
70
80
1.0E+03
1.0E+04
1.0E+05
1.0E+06
1.0E+07
1.0E+08
Frequency (Hz)
Rejection Ration (dB)
T = - 40 degC
T = + 25 degC
T = + 85 degC
ZL40123
Data Sheet
12
Zarlink Semiconductor Inc.
PSRR -ve
0
10
20
30
40
50
60
70
1.0E+03
1.0E+04
1.0E+05
1.0E+06
1.0E+07
1.0E+08
Frequency (Hz)
Rejection Ration (dB)
T
T
T
T
T
T
T = - 40 degC
T = + 25 degC
T = + 85 degC
Input Voltage and Current Noise
1
10
100
1.0E+01
1.0E+02
1.0E+03
1.0E+04
1.0E+05
1.0E+06
1.0E+07
Frequency (Hz)
Current Noise (pA/SQRT(Hz)
Voltage Noise (nV/SQRT(Hz)
Input Voltage Noise
Inverting Input Current Noise
Non-Inverting Input Current
ZL40123
Data Sheet
13
Zarlink Semiconductor Inc.
Supply Current vs Temperature
4.70
4.80
4.90
5.00
5.10
5.20
5.30
5.40
5.50
5.60
-40
-20
0
20
40
60
80
100
120
140
Die Temp (deg. C)
S
uppl
y
C
u
r
r
e
nt
(
m
A
)
DC Drift Over Temperature
0.00
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
9.00
-40
-20
0
20
40
60
80
100
120
140
Die Temp (deg. C)
Input Offset Voltage (mV)
Input Bias Current (uA)
Input Bias Inv
Input Bias Non-Inv
Input Offset Voltage
ZL40123
Data Sheet
14
Zarlink Semiconductor Inc.
Large and Small Signal Pulse Response
-3
-2
-1
0
1
2
3
0
10
20
30
40
50
60
70
80
Time (ns)
Large Signal Vout (V
)
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
Small Signal Vout (V
)
Vout = 5V Step
Vout = 0.5V Step
Closed Loop Output Impedance
0.01
0.1
1
10
0.01
0.1
1
10
100
Frequency (MHz)
C
l
os
e
d
Loop O
u
t
put
I
m
pe
da
nc
e
(
O
hm
s
)
ZL40123
Data Sheet
15
Zarlink Semiconductor Inc.
Differential Gain & Phase ZL40122 / ZL40123
NTSC
RL=150?
-0.07
-0.06
-0.05
-0.04
-0.03
-0.02
-0.01
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Bias Voltage
D
i
f
f
e
r
e
n
t
i
a
l
G
a
i
n

&
P
h
ase (
?
%

&
?

)
Best fit Gain
Best fit Phase
www.zarlink.com
Information relating to products and services furnished herein by Zarlink Semiconductor Inc. or its subsidiaries (collectively "Zarlink") is believed to be reliable.
However, Zarlink assumes no liability for errors that may appear in this publication, or for liability otherwise arising from the application or use of any such
information, product or service or for any infringement of patents or other intellectual property rights owned by third parties which may result from such application or
use. Neither the supply of such information or purchase of product or service conveys any license, either express or implied, under patents or other intellectual
property rights owned by Zarlink or licensed from third parties by Zarlink, whatsoever. Purchasers of products are also hereby notified that the use of product in
certain ways or in combination with Zarlink, or non-Zarlink furnished goods or services may infringe patents or other intellectual property rights owned by Zarlink.
This publication is issued to provide information only and (unless agreed by Zarlink in writing) may not be used, applied or reproduced for any purpose nor form part
of any order or contract nor to be regarded as a representation relating to the products or services concerned. The products, their specifications, services and other
information appearing in this publication are subject to change by Zarlink without notice. No warranty or guarantee express or implied is made regarding the
capability, performance or suitability of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute
any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user's responsibility to fully determine the performance and
suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. Manufacturing does
not necessarily include testing of all functions or parameters. These products are not suitable for use in any medical products whose failure to perform may result in
significant injury or death to the user. All products and materials are sold and services provided subject to Zarlink's conditions of sale which are available on request.
Purchase of Zarlink's I
2
C components conveys a licence under the Philips I
2
C Patent rights to use these components in and I
2
C System, provided that the system
conforms to the I
2
C Standard Specification as defined by Philips.
Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.
Copyright Zarlink Semiconductor Inc. All Rights Reserved.
TECHNICAL DOCUMENTATION - NOT FOR RESALE
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