ad829sq-883b Analog Devices, Inc., ad829sq-883b Datasheet

ad829sq-883b

Manufacturer Part Number

ad829sq-883b

Description

High-speed, Low-noise Video Op Amp

Manufacturer

Analog Devices, Inc.

Datasheet

1.AD829SQ-883B.pdf (16 pages)

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GENERAL DESCRIPTION

The AD829 is a low noise (1.7 nV/√Hz), high speed op amp

with custom compensation that provides the user with gains of

± 1 to ± 20 while maintaining a bandwidth greater than 50 MHz.

The AD829’s 0.04° differential phase and 0.02% differential

gain performance at 3.58 MHz and 4.43 MHz, driving reverse-

terminated 50 Ω or 75 Ω cables, makes it ideally suited for

professional video applications. The AD829 achieves its 230 V/µs

uncompensated slew rate and 750 MHz gain bandwidth while

requiring only 5 mA of current from power supplies.

The AD829’s external compensation pin gives it exceptional

versatility. For example, compensation can be selected to

optimize the bandwidth for a given load and power supply voltage.

As a gain-of-two line driver, the –3 dB bandwidth can be increased

to 95 MHz at the expense of 1 dB of peaking. The AD829’s

output can also be clamped at its external compensation pin.

The AD829 exhibits excellent dc performance. It offers a mini-

mum open-loop gain of 30 V/mV into loads as low as 500 Ω,

low input voltage noise of 1.7 nV/√Hz, and a low input offset

voltage of 1 mV maximum. Common-mode rejection and power

supply rejection ratios are both 120 dB.

This op amp is also useful in multichannel, high speed data

conversion where its fast (90 ns to 0.1%) settling time is impor-

tant. In such applications, the AD829 serves as an input buffer

for 8-bit to 10-bit A/D converters and as an output I/V con-

verter for high speed DACs.

REV. G

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 that

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

FEATURES

High Speed

Ideal for Video Applications

Low Noise

Excellent DC Precision

Flexible Operation

Available in Tape and Reel in Accordance with

120 MHz Bandwidth, Gain = –1

230 V/ s Slew Rate

90 ns Settling Time to 0.1%

0.02% Differential Gain

0.04 Differential Phase

1.7 nV/√Hz Input Voltage Noise

1.5 pA/√Hz Input Current Noise

1 mV Max Input Offset Voltage (Over Temp)

0.3 mV/ C Input Offset Drift

Specified for

External Compensation for Gains 1 to 20

5 mA Supply Current

EIA-481A Standard

3 V Output Swing into a 150

5 V to

15 V Operation

Load

Operating as a traditional voltage feedback amplifier, the AD829

provides many of the advantages a transimpedance amplifier

offers. A bandwidth greater than 50 MHz can be maintained for

a range of gains through the replacement of the external com-

pensation capacitor. The AD829 and the transimpedance

amplifier are both unity gain stable and provide similar voltage

noise performance (1.7 nV/√Hz); however, the current noise of

the AD829 (1.5 pA/√Hz) is less than 10% of the noise of

transimpedance amps. The inputs of the AD829 are symmetrical.

PRODUCT HIGHLIGHTS

1. Input voltage noise of 2 nV/√Hz, current noise of 1.5 pA/√Hz,

2. Differential phase error of 0.04° and a 0.02% differential

3. The AD829 can drive heavy capacitive loads.

4. Performance is fully specified for operation from ± 5 V to

5. The AD829 is available in plastic, CERDIP, and small outline

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

and 50 MHz bandwidth, for gains of 1 to 20, make the AD829

an ideal preamp.

gain error, at the 3.58 MHz NTSC and 4.43 MHz PAL and

SECAM color subcarrier frequencies, make the op amp an

outstanding video performer for driving reverse-terminated

50 Ω and 75 Ω cables to ± 1 V (at their terminated end).

± 15 V supplies.

packages. Chips and MIL-STD-883B parts are also available.

The SOIC-8 package is available for the extended tempera-

ture range of –40°C to +125°C.

PDIP(N), Cerdip (Q), and SOIC (R) Packages

OFFSET NULL

NC = NO CONNECT

CONNECTION DIAGRAMS

–IN

+IN

High Speed, Low Noise

–V

20-Lead LCC Pinout

–IN

+IN

9 10 11 12 13

(Not to Scale)

TOP VIEW

8-Lead

AD829

20 19

Video Op Amp

OFFSET NULL

OUTPUT

COMP

OUTPUT

AD829

www.analog.com

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ad829sq-883b Summary of contents

AD829–SPECIFICATIONS Model Conditions INPUT OFFSET VOLTAGE T MIN Offset Voltage Drift INPUT BIAS CURRENT T MIN INPUT OFFSET CURRENT T MIN Offset Current Drift OPEN-LOOP GAIN LOAD T MIN R LOAD V OUT R LOAD T MIN ...

Page 3

Model Conditions POWER SUPPLY Operating Range Quiescent Current MIN MIN TRANSISTOR COUNT Number of Transistors NOTES Full Power Bandwidth = Slew Rate/2 π PEAK 2 Tested at Gain = +20, C ...

Page 4

AD829 1 ABSOLUTE MAXIMUM RATINGS Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± ...

Page 5

... Model AD829AR AD829AR-REEL AD829AR-REEL7 AD829ARZ* AD829ARZ-REEL* AD829ARZ-REEL7* AD829JN AD829JR AD829JR-REEL AD829JR-REEL7 AD829AQ AD829SQ AD829SQ/883B 5962-9312901MPA AD829SE/883B 5962-9312901M2A AD829JCHIPS AD829SCHIPS *Z = Pb-free part. REV. G ORDERING GUIDE Temperature Range Package Description –40°C to +125°C 8-Lead Plastic SOIC –40°C to +125°C 8-Lead Plastic SOIC – ...

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ad829sq-883b Analog Devices, Inc., ad829sq-883b Datasheet

ad829sq-883b

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