AD812ARZ Analog Devices Inc, AD812ARZ Datasheet

IC OPAMP DUAL CURR-FDBK 8-SOIC

AD812ARZ

Manufacturer Part Number
AD812ARZ
Description
IC OPAMP DUAL CURR-FDBK 8-SOIC
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD812ARZ

Slew Rate
1600 V/µs
Applications
Current Feedback
Number Of Circuits
2
-3db Bandwidth
145MHz
Current - Supply
4.5mA
Current - Output / Channel
50mA
Voltage - Supply, Single/dual (±)
2.4 V ~ 36 V, ±1.2 V ~ 18 V
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Gain Bandwidth
145MHz
Supply Voltage Range
± 1.2V To ± 18V
No. Of Amplifiers
2
Output Current
50mA
Amplifier Output
Single Ended
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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a
PRODUCT DESCRIPTION
The AD812 is a low power, single supply, dual video amplifier.
Each of the amplifiers have 50 mA of output current and are
optimized for driving one back-terminated video load (150 )
each. Each amplifier is a current feedback amplifier and fea-
tures gain flatness of 0.1 dB to 40 MHz while offering differen-
tial gain and phase error of 0.02% and 0.02 . This makes the
AD812 ideal for professional video electronics such as cameras
and video switchers.
REV. B
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
FEATURES
Two Video Amplifiers in One 8-Lead SOIC Package
Optimized for Driving Cables in Video Systems
Excellent Video Specifications (R
Low Power
High Speed
Easy to Use
APPLICATIONS
Video Line Driver
Professional Cameras
Video Switchers
Special Effects
Figure 1. Fine-Scale Gain Flatness vs. Frequency, Gain
= +2, R
Gain Flatness 0.1 dB to 40 MHz
0.02% Differential Gain Error
0.02 Differential Phase Error
Operates on Single +3 V Supply
5.5 mA/Amplifier Max Power Supply Current
145 MHz Unity Gain Bandwidth (3 dB)
1600 V/ s Slew Rate
50 mA Output Current
Output Swing to 1 V of Rails (150
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
0.4
0.3
0.2
0.1
0
100k
L
= 150
1M
FREQUENCY – Hz
V
S
=
L
10M
= 150
15V
5V
5V
3V
G = +2
R
L
Load)
= 150
):
100M
The AD812 offers low power of 4.0 mA per amplifier max (V
+5 V) and can run on a single +3 V power supply. The outputs
of each amplifier swing to within one volt of either supply rail to
easily accommodate video signals of 1 V p-p. Also, at gains of
+2 the AD812 can swing 3 V p-p on a single +5 V power sup-
ply. All this is offered in a small 8-lead plastic DIP or 8-lead
SOIC package. These features make this dual amplifier ideal
for portable and battery powered applications where size and
power is critical.
The outstanding bandwidth of 145 MHz along with 1600 V/ s
of slew rate make the AD812 useful in many general purpose
high speed applications where a single +5 V or dual power sup-
plies up to 15 V are available. The AD812 is available in the
industrial temperature range of –40 C to +85 C.
Figure 2. Differential Gain and Phase vs. Supply Voltage,
Gain = +2, R
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
0.08
0.06
0.04
0.02
0
5
L
6
= 150
Dual, Current Feedback
7
OUT1
PIN CONFIGURATION
–IN1
+IN1
V–
World Wide Web Site: http://www.analog.com
Mini-DIP and SOIC
SUPPLY VOLTAGE –
8
1
2
3
4
8-Lead Plastic
DIFFERENTIAL GAIN
Low Power Op Amp
DIFFERENTIAL PHASE
AD812
9
+
10
+
11
© Analog Devices, Inc., 1998
8
7
6
5
Volts
V+
OUT2
–IN2
+IN2
12
13
AD812
14
15
0.06
0.04
0.02
S
=

Related parts for AD812ARZ

AD812ARZ Summary of contents

Page 1

FEATURES Two Video Amplifiers in One 8-Lead SOIC Package Optimized for Driving Cables in Video Systems Excellent Video Specifications (R Gain Flatness 0 MHz 0.02% Differential Gain Error 0.02 Differential Phase Error Low Power Operates on ...

Page 2

AD812–SPECIFICATIONS Dual Supply (@ 150 A L Model DYNAMIC PERFORMANCE –3 dB Bandwidth Bandwidth for 0.1 dB Flatness Slew Rate 1 Settling Time to 0.1% NOISE/HARMONIC PERFORMANCE Total Harmonic Distortion Input Voltage Noise Input ...

Page 3

Model OUTPUT CHARACTERISTICS Output Voltage Swing Output Current Short Circuit Current Output Resistance MATCHING CHARACTERISTICS Dynamic Crosstalk Gain Flatness Match DC Input offset Voltage –Input Bias Current POWER SUPPLY Operating Range Quiescent Current Power Supply Rejection Ratio Input Offset Voltage ...

Page 4

AD812–SPECIFICATIONS Single Supply (Continued) Model DC PERFORMANCE Input Offset Voltage Offset Drift –Input Bias Current +Input Bias Current Open-Loop Voltage Gain Open-Loop Transresistance INPUT CHARACTERISTICS Input Resistance Input Capacitance Input Common Mode Voltage Range Common-Mode Rejection Ratio Input Offset Voltage ...

Page 5

ABSOLUTE MAXIMUM RATINGS Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 ...

Page 6

AD812–Typical Performance Characteristics SUPPLY VOLTAGE – Figure 4. Input Common-Mode Voltage Range vs. Supply Voltage SUPPLY VOLTAGE – Figure 5. Output Voltage Swing vs. ...

Page 7

V S –6 –8 –10 –12 –14 –16 –60 –40 – JUNCTION TEMPERATURE – C Figure 10. Input Offset Voltage vs. Junction Temperature 160 140 SINK 120 100 SOURCE 80 60 ...

Page 8

AD812 100 INVERTING INPUT CURRENT NOISE 10 VOLTAGE NOISE NONINVERTING INPUT CURRENT NOISE 1 10 100 1k FREQUENCY – Hz Figure 16. Input Current and Voltage Noise vs. Frequency 90 80 681 V IN 681 ...

Page 9

15V S 1200 R = 500 L 1000 800 600 400 200 OUTPUT STEP SIZE – Vp-p Figure 22. Slew Rate vs. Output ...

Page 10

AD812 500mV 100 Figure 28. Large Signal Pulse Response, Gain = +10 357 , R = 500 , PHASE GAIN 0 ...

Page 11

Figure 34. Large Signal Pulse Response, Gain = – 750 , R = 150 , PHASE GAIN 0 –1 –2 ...

Page 12

AD812 General Considerations The AD812 is a wide bandwidth, dual video amplifier which offers a high level of performance on less than 5.5 mA per am- plifier of quiescent supply current designed to offer out- standing performance at ...

Page 13

Power Supply Bypassing Adequate power supply bypassing can be very important when optimizing the performance of high speed circuits. Inductance in the supply leads can (for example) contribute to resonant circuits that produce peaking in the amplifier’s response. In addition, ...

Page 14

AD812 – 510pF –6 – FREQUENCY – MHz Figure 43. Response to Large Load Capacitor 100 Figure 44. Pulse Response ...

Page 15

PHASE GAIN 0 5V –1 3V –2 –3 –4 –5 – 100 FREQUENCY –MHz Figure 47. Closed-Loop Gain and Phase vs. Frequency for the Line Driver 120 110 R = 150 L ...

Page 16

AD812 Operation Using a Single Supply The AD812 will operate with total supply voltages from 36 V down to 2.4 V. With proper biasing (see Figure 53), it can be an outstanding single supply video amplifier. Since the input and ...

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