Dual High Speed,

Low Noise Op Amp

Data Sheet

AD8022

Rev. C

InformationfurnishedbyAnalogDevicesisbelievedtobeaccurateandreliable.However,no

responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother

rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No

licenseisgrantedbyimplicationorotherwiseunderanypatentorpatentrightsofAnalogDevices.

Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.

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

Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113

©2011 Analog Devices, Inc. All rights reserved.

FEATURES

Low power amplifiers provide low noise and low distortion,

ideal for xDSL modem receiver

Wide supply range: +5 V, ±2.5 V to ±12 V voltage supply

Low power consumption: 4.0 mA/Amp

Voltage feedback

Ease of Use

Lower total noise (insignificant input current noise

contribution compared to current feedback amps)

Low noise and distortion

2.5 nV/√Hz voltage noise @ 100 kHz

1.2 pA/√Hz current noise

MTPR < −66 dBc (G = +7)

SFDR 110 dB @ 200 kHz

High speed

130 MHz bandwidth (−3 dB), G = +1

Settling time to 0.1%, 68 ns

50 V/μs slew rate

High output swing: ±10.1 V on ±12 V supply

Low offset voltage, 1.5 mV typical

APPLICATIONS

Receiver for ADSL, VDSL, HDSL, and proprietary

xDSL systems

Low noise instrumentation front end

Ultrasound preamps

Active filters

16-bit ADC buffers

FUNCTIONAL BLOCK DIAGRAM

AD8022

1

2

3

4

8

7

6

5

OUT1

–IN1

+IN1

–VS

+VS

OUT2

–IN2

+IN2

–

+

–

+

Figure 1.

GENERAL DESCRIPTIONS

The AD8022 consists of two low noise, high speed, voltage

feedback amplifiers. Each amplifier consumes only 4.0 mA of

quiescent current, yet has only 2.5 nV/√Hz of voltage noise.

These dual amplifiers provide wideband, low distortion

performance, with high output current optimized for stability

when driving capacitive loads. Manufactured on ADI’s high

voltage generation of XFCB bipolar process, the AD8022

operates on a wide range of supply voltages. The AD8022 is

available in both an 8-lead MSOP and an 8-lead SOIC. Fast over

voltage recovery and wide bandwidth make the AD8022 ideal as

the receive channel front end to an ADSL, VDSL, or proprietary

xDSL transceiver design.

In an xDSL line interface circuit, the AD8022’s op amps can be

configured as the differential receiver from the line transformer

or as independent active filters.

FREQUENCY (Hz)

100

10

1

10

10M

1M

100k

10k

1k

100

iN (pA/ Hz)

eN (nV/ Hz)

Figure 2. Current and Voltage Noise vs. Frequency