ZL40121/DCA [ZARLINK]
Video Amplifier, 1 Channel(s), 2 Func, PDSO8, 0.150 INCH, MS-012AA, SOIC-8;
| 型号： | ZL40121/DCA |
| 厂家： | 
ZARLINK SEMICONDUCTOR INC |
| 描述： | Video Amplifier, 1 Channel(s), 2 Func, PDSO8, 0.150 INCH, MS-012AA, SOIC-8 光电二极管 |
| 文件： | 总16页 (文件大小：286K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ZL40121
Low Power, Current Feedback
Dual Operational Amplifier
Data Sheet
April 2003
Features
•
•
•
•
•
280MHz small signal bandwidth
Ordering Information
1100V/µs slew rate
3.3mA/channel static supply current
60Mhz gain flatness to +/- 0.1dB
8 pin SOIC
ZL40121/DCA (tubes) 8 lead SOIC
ZL40121/DCB (tape and reel) 8 lead SOIC
-40°C to +85°C
Applications
The 280MHz Av=+1V/V small signal bandwidth and
1100V/µs slew rate make the device an excellent
solution for component video applications such as
driving RGB signals down significant cable lengths.
•
•
•
•
•
Video switchers/routers
Video line drivers
Twisted pair driver/receiver
Active filters
Other applications which may take advantage of the
ZL40121 dynamic performance features and matched
amplifiers include low cost high order active filters and
twisted pair driver/receivers.
Cable drivers
Description
The ZL40121 is a low power, dual, current feedback
operational amplifier offering high performance at a
low cost. The device provides a very high output
current drive capability of 65mA while requiring only
3.3mA of static supply current per channel. This
feature makes the ZL40121 the ideal choice where a
high density of high speed devices is required.
8
7
6
5
Out_1
V+
1
In_n_1
In_p_1
V -
Out_2
In_n_2
In_p_2
2
3
4
1
2
ZL40121
Figure 1 - Functional Block Diagram and Pin Connection
1
ZL40121
Data Sheet
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
Zo
Z( f ) =
f
fo
1+ j
where Zo is the DC gain.
It can be shown that the closed loop non-inverting gain is given by
Vout
Vin
Av
=
fRf
1+ j
foZo
where Av is the DC closed loop gain, Rf is the feedback resistor. The closed loop bandwidth is therefore given by
foZo GBOL
BWCL
=
=
Rf
Rf
and for low values of closed loop gain Av depends only on the feedback resistor Rf and not the closed loop gain.
This can readily be seen from the performance characteristic frequency response graph with varying Rf
It can be shown that increasing the value of Rf
•
•
•
•
•
Increases closed loop stability
Decreases loop gain
Decreases bandwidth
Reduces gain peaking
Reduces overshoot
Using a resistor value of Rf=510Ω for Av=+2 V/V gives good stability and bandwidth. However since requirements
for stability and bandwidth vary it may be worth some experimentation to find the optimal Rf for a given application.
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. This is particularly important for high performance current feedback
opamps. The Zarlink evaluation board serves as a good example layout that should be copied. The following
guidelines should be followed:
•
•
Include 6.8uF tantalum and 0.1uF 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
2
Zarlink Semiconductor Inc.
Data Sheet
ZL40121
Application Diagrams
Vcc
6.8uF
•
•
•
0.1uF
Vin
•
Vout
•
½ ZL40121
Rf
Rin
•
Ra
•
•
0.1uF
Vout
Vin
Rf
Ra
= Av = 1+
•
6.8uF
Vee
Figure 2 - Non-inverting Gain
•
Vcc
6.8uF
•
•
•
Rb
0.1uF
Vout
½ ZL40121
Rf
Vin
Rin
•
•
Ra
•
•
0.1uF
Vout
Vin
Rf
Ra
= Av = −
•
6.8uF
Vee
Figure 3 - Inverting Gain
Zarlink Semiconductor Inc.
3
ZL40121
Data Sheet
Absolute Maximum Ratings
Parameter
Symbol
Min
Max
Units
1
2
Vin Differential
VIN
±1.2
V
Output Short Circuit Protection
VOS/C
See Apps
Note in this
data sheet
3
4
5
6
Supply voltage
V+, V-
(+IN), V(-IN)
VO
±6.5
V+
V
V
Voltage at Input Pins
Voltage at Output Pins
V
V-
V-
2
V+
V
EDS Protection
(see Note 3)
kV
(HBM Human Body Model)
(see Note 2)
7
8
Storage Temperature
Latch-up test
-55
+150
°C
100mA
for 100ms
(see Note 4)
9
Supply transient test
20%pulse
for 100ms
(see Note 5)
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, 1.5kΩ in series with 100pF. Machine model, 20Ωin series with 100pF.
Note 3: 0.8kV between the pairs of +INA, -INA and +INB pins only. 2kV between supply pins, OUTA or OUTB pins and any input pin.
Note 4: ±100mA 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 100ms.
Operating Range
Characteristic
Supply Voltage (Vcc)
Min
Typ
Max
Units
Comments
±4.0
-40
6.0
V
Operating Temperature (Ambient)
Junction to Ambient resistance
+85
°C
Rth(j-a)
150
60
°C
4 layer
FR4 board
Junction to Case resistance
Rth(j-c)
°C
4 layer
FR4 board
4
Zarlink Semiconductor Inc.
Data Sheet
ZL40121
Electrical Characteristics - Vcc=±5V, Tamb=25C(typ.),Tamb=-40C to +85C(min-max), Av=+2V/V,
Rf=510Ω, Rload=100Ω unless specified
Min
Min/
Max
25C
Typ
25C
/Max
–40 to
+85C
Test
Characteristic
Conditions
Units
1
Type
Frequency Domain Response
280
230
130
60
-
-
-
-
-
-
-
-
MHz
C
C
C
C
-3dB Bandwidth
Av=+1; Vo < 0.5Vp-p;
Rf=1.5kΩ
MHz
MHz
MHz
Av=+2; Vo < 0.5Vp-p;
Rf=510Ω
Av=+2; Vo < 5Vp-p;
Rf=510Ω
+/- 0.1dB Flatness
Av=+2; Vo < 0.5Vp-p;
Rf=510Ω
0.02
0.06
-
-
-
-
%
C
C
Differential Gain (NTSC)
Differential Phase (NTSC)
Time Domain Response
Rise and Fall Time
Rload=150Ω
Rload=150Ω
deg.
1.4
3.6
6
-
-
-
-
-
-
-
-
-
-
ns
C
C
C
C
C
Vout=0.5V Step
Vout=5V Step
Vout=2V Step
Vout=0.5V Step
Vout=5V Step
ns
ns
Settling Time to 0.1%
Overshoot
6
%
1100
V/µs
Slew Rate
Noise and Distortion
nd
2
3
Harmonic Distortion
Harmonic Distortion
Vout=2Vp-p, 1MHz
Vout=2Vp-p, 1MHz
-78
-88
-
-
-
-
C
C
dBc
dBc
nd
Equivalent Input Noise
Voltage
>1MHz
>1MHz
>1MHz
6.4
1.0
9.3
-
-
-
-
-
-
C
C
C
nV Hz
Non-Inverting Current
Inverting Current
pV
pA
Hz
Hz
Static, DC Performance
Input Offset Voltage
Average Drift
1.4
-
± 6.0
± 7.5
15
A
C
A
C
mV
-
±2.6
-
uV/deg. C
uA
1.3
-
±2.8
2.6
Input Bias Current – Non-inverting
Average Drift
nA/deg. C
Zarlink Semiconductor Inc.
5
ZL40121
Data Sheet
Min
/Max
–40 to
+85C
Min/
Max
25C
Typ
25C
Test
Characteristic
Conditions
Units
1
Type
4.4
-
±14
-
±15
16
A
C
A
A
A
A
Input Bias Current – Inverting
Average Drift
uA
nA/deg. C
65
62
57
3.3
63
58
54
4.5
62
Power Supply Rejection Ratio (+ve)
Power Supply Rejection Ratio (-ve)
Common Mode Rejection Ratio
Supply Current (per Channel)
DC
DC
DC
dB
dB
dB
mA
56
53
4.7
Quiescent
Miscellaneous Performance
19.0
1
-
-
C
C
A
A
C
C
Input Resistance (Non-inverting)
Input Capacitance (Non-inverting)
Common Mode Input Range
Output Voltage Range
MΩ
pF
V
-
±2.2
±2.7
-
-
±1.9
±2.6
-
±2.3
±2.8
65
V
Rload=100Ω
Output Current (max)
mA
mΩ
110
-
-
Output Resistance, Closed Loop
DC
NOTE 1: 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.
6
Zarlink Semiconductor Inc.
Data Sheet
ZL40121
Typical Performance Characteristics - Tamb=25degC, Vsupply=± 5V, Rload=100Ω, Av=+2V/V,
Rf=510Ω, unless otherwise specified
Non-Inverting Frequency Response
2
0
200
150
100
50
Gain
Av =+2
Rf = 510
-2
Av =+1
Rf = 1.1k
Av =+8
Rf = 200
-4
Phase
-6
0
-8
-50
-100
-150
-200
-10
-12
-14
Av =+4
Rf = 150
Vo = 0.5Vp-p
1
10
100
1000
Frequency (MHz)
Zarlink Semiconductor Inc.
7
ZL40121
Data Sheet
Non-Inverting Frequency Response varying Rf
2
0
Rf=390
Rf=250
-2
-4
-6
-8
Rf=700
Rf=510
-10
-12
-14
-16
-18
Vo=0.5Vp-p
10
100
1000
Frequency (MHz)
Frequency Response for Varying Rload
2
0
RL = 1k
-2
RL = 100
RL = 25
-4
-6
Vo = 0.5V p-p
-8
-10
10
100
1000
Frequency (MHz)
8
Zarlink Semiconductor Inc.
Data Sheet
ZL40121
Large Signal Gain
0
-2
-4
Vo = 2V p-p
Vo = 1V p-p
Vo = 5V p-p
Vo = 4V p-p
-6
-8
-10
-12
-14
-16
10
100
1000
Frequency (MHz)
Harmonic Distortion vs Frequency
-40
-50
Vo = 2V p-p
-60
2nd Harmonic
-70
-80
-90
3rd Harmonic
-100
1
10
100
Frequency (MHz)
Zarlink Semiconductor Inc.
9
ZL40121
Data Sheet
Open Loop Transimpedance Gain and Phase
120
110
100
90
0
-30
Transimpedance Gain
Transimpedance Phase
-60
-90
80
-120
-150
-180
-210
-240
70
60
50
40
1.0E+03
1.0E+04
1.0E+05
1.0E+06
1.0E+07
1.0E+08
1.0E+09
Frequency (Hz)
CMRR
70
60
50
40
30
20
10
T = - 40 degC
T = + 25 degC
T = + 85 degC
0
1.0E+03
1.0E+04
1.0E+05
1.0E+06
1.0E+07
1.0E+08
Frequency (Hz)
10
Zarlink Semiconductor Inc.
Data Sheet
ZL40121
PSRR +ve
80
70
60
50
40
30
20
10
0
T = - 40 degC
T = + 25 degC
T = + 85 degC
1.0E+03
1.0E+04
1.0E+05
1.0E+06
1.0E+07
1.0E+08
Frequency (Hz)
PSRR -ve
70
60
50
40
30
20
10
0
T = - 40 degC
T = + 25 degC
T = + 85 degC
1.0E+03
1.0E+04
1.0E+05
1.0E+06
1.0E+07
1.0E+08
Frequency (Hz)
Zarlink Semiconductor Inc.
11
ZL40121
Data Sheet
Input Voltage and Current Noise
100
10
1
Inverting Input Current Noise
Input Voltage Noise
Non-Inverting Input Current
0.1
1.0E+01
1.0E+02
1.0E+03
1.0E+04
1.0E+05
1.0E+06
1.0E+07
Frequency (Hz)
Supply Current vs Temperature
3.55
3.50
3.45
3.40
3.35
3.30
3.25
3.20
3.15
3.10
3.05
3.00
-40
-20
0
20
40
60
80
100
120
140
Die Temp (deg. C)
12
Zarlink Semiconductor Inc.
Data Sheet
ZL40121
DC Drift Over Temperature
5.00
4.50
4.00
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
Input Bias Inv
Input Offset Voltage
Input Bias Non-Inv
-40
-20
0
20
40
60
80
100
120
140
Die Temp (deg. C)
Large and Small Signal Pulse Response
3
0.6
0.4
0.2
0
Vout = 5V Step
2
1
Vout = 0.5V Step
0
-1
-2
-3
-0.2
-0.4
-0.6
0
10
20
30
40
50
60
70
80
Time (ns)
Zarlink Semiconductor Inc.
13
ZL40121
Data Sheet
Closed Loop Output Impedance
10
1
0.1
0.01
0.01
0.1
1
10
100
Frequency (MHz)
Differential Gain & Phase ZL40120 / ZL40121
Best fit Gain
NTSC
RL=150?
Best fit Phase
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
14
Zarlink Semiconductor Inc.
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visit our Web Site at
www.zarlink.com
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TECHNICAL DOCUMENTATION - NOT FOR RESALE
相关型号：
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Video Amplifier, 1 Channel(s), 4 Func, PDSO14, 0.150 INCH, LEAD FREE, MS-012AB, SOIC-14
ZARLINK
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