AD848 AD849 Analog Devices Technical Data Sheet and User's Guide

High Speed, Low Power Monolithic Op Amp AD848/AD849

FEATURES CONNECTION DIAGRAMS MHz Gain Bandwidth – AD849

Plastic (N),

MHz Gain Bandwidth – AD848

Small Outline (R) and

4.8 m A Supply Current

Cerdip (Q) Packages

V/ms Slew Rate ns Settling Time to 0.1% for a 10 V Step – AD849

AD848/49

NULL NULL

Differential Gain: AD848 = 0.07%, AD849 = 0.08%

–IN +VS

Differential Phase: AD848 = 0.088, AD849 = 0.048

+IN OUTPUT

Drives Capacitive Loads

–VS 5TOP VIEW NC

(Not to Scale)

DC PERFORMANCE

NC = NO CONNECT

n V/√Hz Input Voltage Noise – AD849 V/m V Open Loop Gain into a 1 k V Load – AD849 m V max Input Offset Voltage

20-Terminal LCC Pinout

Performance Specified for 65 V and 615 V Operation Available in Plastic, Hermetic Cerdip and Small Outline Packages. Chips and MIL-STD-883B Parts Available. Available in Tape and Reel in Accordance with EIA-481A Standard

NC NC

APPLICATIONS

OFFSET

Cable Drivers NULL AD848SE/883B

NC TOP VIEW NC

8- and 10-Bit Data Acquisition Systems

OFFSET (Not to Scale)

Video and RF Amplification V–

Signal Generators NC NC

www.BDTIC.com/ADI PRODUCT DESCRIPTION

The AD848 and AD849 are high speed, low power monolithic NC = NO CONNECT

operational amplifiers. The AD848 is internally compensated so

APPLICATIONS HIGHLIGHTS

that it is stable for closed loop gains of 5 or greater. The AD849

1. The high slew rate and fast settling time of the AD848 and

is fully decompensated and is stable at gains greater than 24. +I

AD849 make them ideal for video instrumentation circuitry,

The AD848 and AD849 achieve their combination of fast ac

low noise pre-amps and line drivers.

and good dc performance by utilizing Analog Devices’ junction

isolated complementary bipolar (CB) process. This process 2. In order to meet the needs of both video and data acquisition enables these op amps to achieve their high speed while only applications, the AD848 and AD849 are optimized and requiring 4.8 m A of current from the power supplies. tested for ±5 V and ±15 V power supply operation. The AD848 and AD849 are members of Analog Devices’ family 3. Both amplifiers offer full power bandwidth greater than of high speed op amps. This family includes, among others, the MHz (for 2 V p-p with ±5 V supplies).

AD847 which is unity gain stable, with a gain bandwidth of

4. The AD848 and AD849 remain stable when driving any

MHz. For more demanding applications, the AD840,

capacitive load.

AD841 and AD842 offer even greater precision and greater

5. Laser wafer trimming reduces the input offset voltage to

output current drive.

m V maximum on all grades, thus eliminating the need for

The AD848 and AD849 have good dc performance. When

external offset nulling in many applications.

operating with ±5 V supplies, they offer open loop gains of

6. The AD848 is an enhanced replacement for the LM6164

V/m V (AD848 with a 500 Ω load) and low input offset

series and can function as a pin-for-pin replacement for

voltage of 1 m V maximum. Common-mode rejection is a

many high speed amplifiers such as the HA2520/2/5 and

minimum of 92 d B. Output voltage swing is ±3 V even into

EL2020 in applications where the gain is 5 or greater.

loads as low as 150 Ω.

REV. 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. otherwise under any patent or patent rights of Analog Devices. Tel: 617/329-4700 Fax: 617/326-8703