AD846AN Analog Devices Inc, AD846AN Datasheet

AD846AN

Manufacturer Part Number

AD846AN

Description

Manufacturer

Analog Devices Inc

Datasheets

1.AD846AN.pdf (12 pages)

2.AD846AN.pdf (12 pages)

Specifications of AD846AN

Rail/rail I/o Type

N/A

Lead Free Status / Rohs Status

Not Compliant

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PRODUCT DESCRIPTION

The AD846 is a monolithic, very high speed operational ampli-

fier offering high performance. Although technically classed as a

current-feedback or transimpedance amplifier, it may be used

in much the same way as traditional op amps while providing

significant performance benefits. Employing Analog Devices’

junction isolated complementary bipolar (CB) process, the AD846

achieves true “12-bit” (0.01%) precision on critical ac and dc

parameters, a level of performance unmatched by amplifiers

fabricated using either the dielectrically isolated (DI) or other

bipolar processes.

The AD846 offers significant advantages over conventional

high speed operational amplifiers. It maintains a nearly con-

stant bandwidth and settling time to 0.01% over a wide range

of closed-loop gains. This makes the AD846 ideal for amplifying

the residue in multiple-pass analog-to-digital converters.

Other advantages include: low input errors and high open-loop

transresistance (200 MΩ) into a 500 Ω load, ensuring true

12-bit dc accuracy for closed-loop gains from –1 to gains

greater than –100. This combination of ac and dc perfor-

mance makes the AD846 an excellent choice for buffering

precision high speed DACs and flash ADCs.

√Hz

The AD846 is available in three performance grades. The AD846A

and AD846B are rated over the industrial temperature range

of –40°C to +85°C. The AD846S is rated over the full mili-

tary temperature range of –55°C to +125°C and is available

processed to MIL-STD-883B, Rev C.

The AD846 is available in two types of 8-lead packages: plastic

mini-DIP and hermetic cerdip. The AD846AR-16 is available in

the 16-lead SOIC package. “A” and “S” grade chips are also

available.

PRODUCT HIGHLIGHTS

1. The AD846 achieves settling times of 110 ns to 0.01%

2. For closed-loop gains of –1 to –100, the high speed perfor-

3. The AD846 is well suited to line driver and video buffer

for gains of –1 to –10, with a 450 V/µs slew rate, while

consuming only 5 mA of supply current.

mance of the AD846 is achieved without sacrificing full 12-bit

dc precision.

applications where the properties of low distortion and high

slew rate are required.

Current-Feedback Op Amp

Plastic Mini-DIP (N) Package

CONNECTION DIAGRAMS

–INPUT

+INPUT

–V

Cerdip (Q) Package

450 V/ s, Precision,

SOIC (R) Package

NC = NO CONNECT

(Not to Scale)

TOP VIEW

AD846

and

–

OUTPUT

COMPENSATION

AD846

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