ADA4841-1YRZ Analog Devices, ADA4841-1YRZ Datasheet

ADA4841-1YRZ

Manufacturer Part Number

ADA4841-1YRZ

Description

Manufacturer

Analog Devices

Datasheet

1.ADA4841-1YRZ.pdf (20 pages)

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FEATURES

Low power: 1.1 mA supply current

Low wideband noise

Low 1/F noise

Low distortion

High speed

Low offset voltage 0.29 mV max

Rail-to-rail output

Power down

Wide supply range: 2.7 V to 12 V

APPLICATIONS

Low power, low noise signal processing

Battery-powered instrumentation

16-bit PulSAR® ADC drivers

GENERAL DESCRIPTION

The ADA4841-1 is a unity gain stable, low noise and distortion,

rail-to-rail output amplifier that has a quiescent current of

1.4 mA maximum. Despite its low power consumption, this

amplifier offers low wideband voltage noise performance of

2 nV/√Hz and 1.4 pA/√Hz current noise, along with excellent

spurious-free dynamic range (SFDR) of −110 dBc at 100 kHz.

To maintain a low noise environment at lower frequencies, the

amplifier has low 1/F noise of 6 nV/√Hz and 13 pA/√Hz at 10 Hz.

The ADA4841-1 has a wide supply voltage range from 2.7 V to

12 V and an output that swings within less than 100 mV of

either rail. The input common-mode voltage range extends

down to the negative supply. The ADA4841-1 can drive up to

20 pF of capacitive load with minimal peaking.

The ADA4841-1 provides the performance required to efficiently

support emerging 16-bit to 18-bit ADCs and is ideal for portable

instrumentation, high channel count, industrial measurement, and

medical applications. The ADA4841-1 is an ideal match for driving

Analog Devices, Inc.

Rev. A

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. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

2 nV/√Hz

1.4 pA/√Hz

6 nV/√Hz @ 10 Hz

13 pA/√Hz @ 10 Hz

−111 dBc @ 100 kHz, V

80 MHz, −3 dB bandwidth (G = +1)

12 V/μs slew rate

175 ns settling time to 0.1%

AD7685/AD7686

= 2 V p-p

16-bit PulSAR ADCs.

Low Power, Low Noise and Distortion,

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

Tel: 781.329.4700

Fax: 781.461.3113

The ADA4841-1 is a SOIC package, with Pb-free lead finish.

This amplifier is rated to work over the industrial temperature

range (−40°C to +125°C).

Rail-to-Rail Output Amplifier

–100

–120

–110

–30

–40

–50

–60

–70

–80

–90

0.01

CONNECTION DIAGRAM (TOP VIEW)

G = +1

= ±5V

2V p-p SECOND

–V

–IN

+IN

Figure 2. Harmonic Distortion

Figure 1. 8-Lead SOIC (R)

FREQUENCY (MHz)

0.1

POWER DOWN

OUT

2V p-p THIRD

ADA4841-1

www.analog.com

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