AD827 Analog Devices, AD827 Datasheet

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AD827

Manufacturer Part Number
AD827
Description
High Speed, Low Power Dual Op Amp
Manufacturer
Analog Devices
Datasheet

Specifications of AD827

-3db Bandwidth
50MHz
Slew Rate
300V/µs
Vos
500µV
Ib
3.3µA
# Opamps Per Pkg
2
Input Noise (nv/rthz)
15nV/rtHz
Vcc-vee
9V to 36V
Isy Per Amplifier
6.75mA
Packages
DIP,LCC,SOIC

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a
PRODUCT DESCRIPTION
The AD827 is a dual version of Analog Devices’ industry-
standard AD847 op amp. Like the AD847, it provides high
speed, low power performance at low cost. The AD827 achieves
a 300 V/µs slew rate and 50 MHz unity-gain bandwidth while
consuming only 100 mW when operating from ± 5 volt power
supplies. Performance is specified for operation using ± 5 V to
± 15 V power supplies.
The AD827 offers an open-loop gain of 3,500 V/V into 500 Ω
loads. It also features a low input voltage noise of 15 nV/√Hz,
and a low input offset voltage of 2 mV maximum. Common-
mode rejection ratio is a minimum of 80 dB. Power supply
rejection ratio is maintained at better than 20 dB with input
frequencies as high as 1 MHz, thus minimizing noise
feedthrough from switching power supplies.
The AD827 is also ideal for use in demanding video applica-
tions, driving coaxial cables with less than 0.04% differential
gain and 0.19° differential phase errors for 643 mV p-p into a
75 Ω reverse terminated cable.
The AD827 is also useful in multichannel, high speed data
conversion systems where its fast (120 ns to 0.1%) settling time
is of importance. In such applications, the AD827 serves as an
input buffer for 8-bit to 10-bit A/D converters and as an output
amplifier for high speed D/A converters.
REV. C
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.
FEATURES
High Speed
Excellent Video Performance
Good DC Performance
Low Power
50 MHz Unity Gain Stable Operation
300 V/ms Slew Rate
120 ns Settling Time
Drives Unlimited Capacitive Loads
0.04% Differential Gain @ 4.4 MHz
0.198 Differential Phase @ 4.4 MHz
2 mV max Input Offset Voltage
15 mV/8C Input Offset Voltage Drift
Available in Tape and Reel in Accordance with
EIA-481A Standard
Only 10 mA Total Supply Current for Both Amplifiers
5 V to
15 V Supplies
8-Lead Plastic (N) and Cerdip
APPLICATION HIGHLIGHTS
1. Performance is fully specified for operation using ± 5 V to
2. A 0.04% differential gain and 0.19° differential phase error at
3. The AD827 can drive unlimited capacitive loads, while its
4. The AD827’s 50 MHz unity-gain bandwidth makes it an
5. The AD827 is available in 8-lead plastic mini-DIP and cerdip,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
± 15 V supplies.
the 4.4 MHz color subcarrier frequency, together with its low
cost, make it ideal for many video applications.
30 mA output current allows 50 Ω and 75 Ω reverse-
terminated loads to be driven.
ideal candidate for multistage active filters.
20-lead LCC, and 16-lead SOIC packages. Chips and
MIL-STD-883B processing are also available.
20-Lead LCC (E) Package
(Q) Packages
CONNECTION DIAGRAMS
High Speed, Low Power
16-Lead Small Outline
© Analog Devices, Inc., 2002
Dual Op Amp
(R) Package
AD827
www.analog.com

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AD827 Summary of contents

Page 1

... Performance is specified for operation using ± ± power supplies. The AD827 offers an open-loop gain of 3,500 V/V into 500 Ω loads. It also features a low input voltage noise of 15 nV/√Hz, and a low input offset voltage maximum. Common- mode rejection ratio is a minimum ...

Page 2

... V = 500 Ω ± 3.0 LOAD = 150 Ω ± 2.5 LOAD ± kΩ 12 LOAD = 500 Ω ± LOAD ± ± –2– AD827J AD827A/S Typ Max Min Typ Max 0.5 2 0 3.3 7 3.3 7 8.2 9.5 ...

Page 3

... Indefinite Storage Temperature Range ( –65°C to +125°C Storage Temperature Range ( –65°C to +150°C Operating Temperature Range AD827J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C AD827A . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to +85°C AD827S . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to +125°C Lead Temperature Range (Soldering to 60 sec 300° ...

Page 4

... AD827 –Typical Performance Characteristics – SUPPLY VOLTAGE ± Volts Figure1. InputCommon-Mode Range vs. Supply Voltage Figure 4. Quiescent Current vs. Supply Voltage ±15V ± –60 –40 – 100 120 TEMPERATURE – °C Figure 7. Quiescent Current vs. Temperature (@ +25 C & ...

Page 5

... Figure 16. Harmonic Distortion vs. Frequency REV. C Figure 11. Open-Loop Gain vs. Load Resistance Figure 14. Large Signal Frequency Response Figure 17. Input Voltage Noise Spectral Density –5– AD827 Figure 12. Power Supply Rejection Ratio vs. Frequency Figure 15. Output Swing and Error vs. Settling Time 400 RISE 350 SLEW RATE 10 – ...

Page 6

... An input resistor (resistor R of Figure 21a) is recommended in IN circuits where the input common-mode voltage to the AD827 may exceed (on a transient basis) the positive supply voltage. This resistor provides protection for the input transistors by limiting the maximum current that can be forced into their bases. ...

Page 7

... VIDEO LINE DRIVER The AD827 functions very well as a low cost, high speed line driver for either terminated or unterminated cables. Figure 23 shows the AD827 driving a doubly terminated cable in a follower configuration 0.1 µ 1/2 50Ω AD827 500Ω 0.1 µF – 500Ω ...

Page 8

... V p-p into a 100 Ω load while operating from ± supplies. The overall bandwidth of the circuit is approximately 7 MHz with 0 peaking. Each half of the AD827 serves as an I/V converter and converts the output current of one of the two multipliers in the AD539 into an output voltage. Each of the AD539’s two multipliers contains two internal 6 kΩ ...

Page 9

... CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN 8 0 1.27 (0.0500) 0.40 (0.0157) –9– AD827 (Q-8) Dimensions shown in millimeters and (inches) 0.13 (0.0051) 1.40 (0.0551) MIN MAX 8 5 7.87 (0.3089) 5.59 (0.2201) ...

Page 10

... AD827 Revision History Location 8/02—Data Sheet changed from REV REV. C. Updated Outline Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 –10– Page REV. C ...

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