Ultralow Distortion, Low Power,

Low Noise, High Speed Op Amp

ADA4857-1/ADA4857-2

Rev. 0

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FEATURES

High speed

2800 V/μs slew rate

Low power: 5 mA/amplifier @ 10 V

Low noise: 4.4 nV/√Hz

Wide supply voltage range: 5 V to 10 V

Power-down feature

Available in 3 mm × 3 mm 8-lead LFCSP (single), 8-lead SOIC

(single), and 4 mm × 4 mm 16-lead LFCSP (dual)

APPLICATIONS

Instrumentation

IF and baseband amplifiers

Active filters

ADC drivers

DAC buffers

CONNECTION DIAGRAMS

NC = NO CONNECT

1

PD

2

FB

3

–IN

4

+IN

7OUT

6NC

ADA4857-1

TOP VIEW

(Not to Scale)

Figure 1. 8-Lead LFCSP (CP)

PD

8

7

OUT

6

NC

5

NC = NO CONNECT

ADA4857-1

TOP VIEW

(Not to Scale)

Figure 2. 8-Lead SOIC (R)

1

–IN1

2

+IN1

3

NC

4

11 NC

10 +IN2

9–IN2

ADA4857-2

TOP VIEW

(Not to Scale)

NC = NO CONNECT

Figure 3. 16-Lead LFCSP (CP)

GENERAL DESCRIPTION

The ADA4857 is a unity gain stable, high speed, voltage feedback

amplifier with low distortion, low noise, and high slew rate. With a

spurious-free dynamic range (SFDR) of −88 dBc @ 10 MHz,

the ADA4857 is an ideal solution in a variety of applications

including ultrasounds, ATE, active filters, and ADC drivers.

The Analog Devices, Inc., proprietary next-generation XFCB

process and innovative architecture enables such high performance

amplifiers.

The ADA4857 has 850 MHz bandwidth, 2800 V/μs slew rate, and

settles to 0.1% in 15 ns. With a wide supply voltage range (5 V to

10 V), the ADA4857 is an ideal candidate for systems that require

high dynamic range, precision, and speed.

The ADA4857-1 amplifier is available in a 3 mm × 3 mm, 8-lead

LFCSP and a standard 8-lead SOIC. The ADA4857-2 is available in

a 4 mm × 4 mm, 16-lead LFSCP. The LFCSP features an exposed

paddle that provides a low thermal resistance path to the PCB. This

path enables more efficient heat transfer and increases reliability.

The ADA4857 works over the extended industrial temperature

range (−40°C to +125°C).