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Low Noise Amplifiers

Analog Devices offers a broad portfolio of low noise amplifiers as well as design tools, applications notes, technical documentation, and support to help you meet the challenges of your latest low noise design requirements.

ADA4898

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 Understanding Noise Optimization in Sensor Signal-Conditioning Circuits
A 4-part technical article series, Planet Analog, November, 2008

It takes more than just low-noise components for a successful low-noise design; you have to understand the signal-chain flow and tradeoffs as well. In this 4-part technical article series, learn the basics of noise in the signal chain, the various types of noise, how to select op amps and passive components and design for the best bandwidth. more ...


Low Noise Amp Hot Products...

The ADA4898 unity gain stable op amp offers design engineers ultra-low broadband noise (<1 nV/rt Hz), 1/f noise of 1.2 nV/rt Hz at 10 Hz, low distortion (-110 dBc at 500 kHz), and dc precision.

The AD8599 is the industry's lowest noise dual op amp offering 1 nV/√Hz p-p @ 1 kHz, 120 nV p-p from 0.1 Hz to 1 Hz.

The low cost ADA4004-4 low noise op amp offers 1.8 nV/vHz @ 1.775 mA/amp (max).

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Samples for the products in the Selection Table below may be ordered over the Web (label reads "Order Samples"). You may order up to two samples of three parts.

These products are all sampling now. To request, please follow the samples links below.

Download this Selection Table
(pdf, 85,374 bytes)		 Last Updated: 4/2008



Analog Devices Low Noise Amplifier Selection Table

Part # VSY VOS Max BW Slew Rate ISY / AMP max eN @ 1 kHz IB max CMRR min PSRR min # Amps Package Pricing Samples
(V) (µV) (MHz) (V/µs) (mA) (nV/√Hz) (nA) dB dB
Precision Op Amps
AD797 10 to 36 40 8 20 10.5 0.9 900 120 120 1 PDIP / SOIC $4.74 Order Samples
AD8599 9 to 36 120 10 15 5.7 1.07 180 120 120 2 SOIC $3.20 Order Samples
ADA4004-4 10 to 36 140 12 2.7 1.8 1.8 85 105 110 4 SOIC / LFCSP $3.06 Order Samples
AD8676 10 to 36 50 10 2.5 2.7 2.8 2 105 106 2 SOIC / MSOP $1.64 Order Samples
AD8675 10 to 36 75 10 2.5 2.7 2.8 2 105 120 1 SOIC / MSOP $1.17 Order Samples
OP27 8 to 44 25 8 2.8 5.7 3 40 114 100 1 TO-99 / CerDIP / PDIP / SOIC $1.18 Order Samples
OP37 8 to 44 25 12 17 5.7 3 40 114 100 1 CerDIP / PDIP / SOIC $1.13 Order Samples
OP270 9 to 36 75 5 2.4 3.25 3.2 20 106 110 2 CerDIP / PDIP / SOICW $2.77 Order Samples
OP470 9 to 36 400 6 2 2.75 3.2 25 100 105 4 CerDIP / PDIP / SOICW $4.38 Order Samples
AD743 9.6 to 36 1000 4.5 2.8 10 3.2 400 80 90 1 SOIC / PDIP $5.26 Order Samples
AD745 9.6 to 36 500 20 12.5 10 3.2 250 90 100 1 SOIC $5.01 Order Samples
AD8671 10 to 36 75 10 4 3.5 2.8 12 100 110 1 SOIC / MSOP $1.05 Order Samples
AD8672 10 to 36 75 10 4 3.5 2.8 12 100 110 2 SOIC / MSOP $1.70 Order Samples
AD8674 10 to 36 75 10 4 3.5 2.8 12 100 110 4 SOIC / TSSOP $3.20 Order Samples
OP184 3 to 36 65 3.25 2.4 1.45 3.9 450 86 76 1 SOIC $1.64 Order Samples
OP284 3 to 36 65 3.25 2.4 1.45 3.9 450 86 76 2 PDIP / SOIC $2.97 Order Samples
OP484 3 to 36 75 3.25 2.4 1.45 3.9 450 86 76 4 PDIP / SOIC $4.95 Order Samples
AD8655 2.7 to 6 250 28 11 4.5 4 0.01 85 88 1 SOIC / MSOP $0.70 Order Samples
AD8656 2.7 to 6 250 28 11 4.5 4 0.01 85 88 2 SOIC / MSOP $1.10 Order Samples
OP113 4 to 36 75 3.4 1.2 3 4.7 600 96 100 1 SOIC $1.74 Order Samples
OP213 4 to 36 100 3.4 1.2 3 4.7 600 96 100 2 PDIP / SOIC $2.08 Order Samples
OP413 4 to 36 125 3.4 1.2 3 4.7 600 96 100 4 SOIC $4.47 Order Samples
SSM2135 4 to 36 2000 3.5 0.9 3 5.2 750 87 90 2 SOIC $2.57 Order Samples
OP285 9 to 44 250 9 22 2.5 6 350 80 85 2 SOIC $2.37 Order Samples
AD8610 10 to 27 100 25 50 3 6 0.01 90 100 1 SOIC / MSOP $3.71 Order Samples
AD8620 10 to 27 150 25 50 3 6 0.01 90 100 2 SOIC $7.41 Order Samples
OP275 9 to 44 1000 9 22 2.5 6 350 80 85 2 SOIC / PDIP $0.99 Order Samples
OP467 9 to 36 500 28 170 2.5 6 600 80 96 4 CerDIP / PDIP / SOIC / LCC $7.39 Order Samples
OP471 9 to 36 2500 6.5 8 2.75 6.5 60 95 95 4 SOIC $4.87 Order Samples
OP1177 5 to 36 60 1.3 0.7 0.5 7.9 2 120 120 1 SOIC / MSOP $0.80 Order Samples
OP2177 5 to 36 75 1.3 0.7 0.5 7.9 2 120 120 2 SOIC / MSOP $1.51 Order Samples
OP4177 5 to 36 75 1.3 0.7 0.5 7.9 2 120 120 4 SOIC / TSSOP $3.56 Order Samples

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Part # VSY BW Slew Rate Noise Distortion
SFDR @ BW		 VOS max IB max ISY / AMP typ Dis-
able		 Package Pricing Samples
(V) (MHz) (V/µs) (nV/√Hz) (dBc) (MHz) (mV) (µA) (mA)
High Speed Op Amps
AD8099 4.5 to 12 510 1350 0.95 -84 10 0.5 2 15 • LFCSP / SOIC $1.98 Order Samples
ADA4899-1 4.5 to 12 600 310 1 -80 10 0.23 1 14.7 • LFCSP / SOIC $1.89 Order Samples
ADA4898-1 ±15 65 50 0.9 -93 500 0.1 0.4 8 • 8-lead SOIC-EP 1.89 Order Samples
ADA4841-1
ADA4841-2		 2.7 to 12 80 12 2.1 -105 0.1 0.3 5.3 1.1 • SOT-23 /
MSOP /
SOIC		 $1.59
$2.29		 Order Samples
AD8021 4.5 to 24 205 150 2.1 -93 1 1 10.5 7 • SOIC / MSOP $1.29 Order Samples
AD8022 4.5 to 26 130 50 2.5 -95 1 6 5 4   SOIC / MSOP $2.35 Order Samples
AD8045 3.3 to 12 1000 1350 3 -90 20 1 6.3 16   LFCSP / SOIC $1.39 Order Samples
Differential Amplifiers
ADA4937-1
ADA4937-2*		 3 to 5.25 1900 6000 2.2 -102 10 2.5 30 39.5 • LFCSP / SOIC $3.79 Order Samples
ADA4938-1*
ADA4938-2*		 4.5 to 11 1500 4700 2.2 -102 10 1 3.5 40 • LFCSP / SOIC $3.79 Order Samples
ADA4922-1 5 to 26 38 260 12 RTO -99 0.1 1.1 3.5 9.4   LFCSP / SOIC $3.59 Order Samples
ADA4941-1 2.7 to 12 32 26 10.2 RTO -109 0.1 0.1 4.5 2.5   LFCSP / SOIC $2.39 Order Samples
AD8139 4.5 to 12 410 800 2.25 -98 1 0.5 8 24.5   LFCSP / SOIC $3.59 Order Samples

*Preliminary Data

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Part # VSY Gain Setting BW kHz Gain Min Gain Max Min CMRR Min CMRR Vnoise RTI Package Pricing Samples
(V) Method G=10 60Hz Min Gain 60Hz Max Gain 1-10Hz
µV p-p
Instrumentation Amps
AD8220 4.6 to 36 Resistor 800 1 1000 78dB 94dB 0.8 MSOP $2.29 Order Samples
AD8221 4.6 to 36 Resistor 562 1 1000 80dB 130dB 0.25 MSOP, SOIC $1.99 Order Samples
AD8222 4.6 to 36 Resistor 750 1 10000 80dB 130dB 0.25 LFCSP $3.59 Order Samples
AD8224 4.6 to 36 Resistor 800 1 1000 78dB 94dB 0.8 LFCSP $4.12 Order Samples
AD8250 10 to 34 Pin; Software 3000 1 10 80dB 98dB 1 MSOP $4.95 Order Samples
AD8251 10 to 34 Pin; Software 2500 1 8 80dB 98dB 1.2 MSOP $4.95 Order Samples


Part # VSY Gain Control -3dB BW Gain Min Gain Max No. of Chan. Spectral Supply Gain Acc. 1dB Package Pricing Samples
(V) MHz G=10 dB dB Noise nV/√Hz Current Max Comp Point dBm
Variable Gain Amps
AD8331 4.5 to 5.5 Analog 120 -4.5 +43 1 0.74 25mA +0.5 7 QSOP $5.39 Order Samples
AD8332 4.5 to 5.5 Analog 120 -4.5 +43.5 2 0.74 58mA +0.5 7 TSSOP, CSP $10.44 Order Samples
AD8334 4.5 to 5.5 Analog 100 -4.5 +43.5 4 0.74 116mA +0.5 7 LFCSP $14.49 Order Samples
AD8335 4.5 to 5.5 Analog 70 -10 +38 4 1.3 76mA ± 0.2 7 LFCSP $12.00 Order Samples
AD8336 ±3 to ±12 Analog 115 -14 +46 1 3 25mA ±0.5 11 LFCSP $4.59 Order Samples
AD8337 4.5 to 10 Analog 280 0 +24 1 2.2 15mA ±0.25 14.5 LFCSP $2.49 Order Samples

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Product Awards...

ADA4899 Unity-Gain Stable, Ultralow Distortion, High Speed Op Amp Wins "EDN Hot Products of 2006" Award

AD8099 Low Noise, Low Distortion, High Speed Op Amp Wins "2003 EDN Innovation of the Year" Award

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Product Reviews...

AD8599: Dual Op Amp With Low Noise And Wide Voltage Range
(AnalogZone, October 2006)

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Press Releases...

Precision 16V Op Amps for Industrial, Instrumentation and Consumer Applications Offer Best-in-Class Performance.


Analog Devices Introduces the Industry's Lowest Distortion Differential ADC Drivers
ADA493x family enables the maximum ADC performance from dc to 100MHz.


Dual Operational Amplifier Offers Low Noise Over A Wide Voltage Range Up To 36 Volts
Small footprint enables higher level of integration.

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Application Notes...

AN-940: Low Noise Amplifier Selection Guide for Optimal Noise Performance (pdf, 275,246 bytes)

AN-358: Noise and Operational Amplifier Circuits (pdf, 607,256 bytes)

AN-253: Find Op Amp Noise with Spreadsheet (pdf, 79,787 bytes)

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Technical Papers...

Understanding Noise Optimization in Sensor Signal-Conditioning Circuits
Planet Analog, November/December, 2008

What should I know about op-amp noise?

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Design Tools...

ADIsimOpAmp Evaluation Tool

NI Multisim™ Analog Devices® Edition Tool

SPICE Evaluation Models

OpAmp Buffer Error Budget Calculator

Analog Photodiode Wizard

Analog Bridge Wizard

Analog Filter Wizard

Gain Calculator

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Low Noise Online Seminars...

Noise Optimization in Sensor Signal Conditioning Circuits (Part I)
Sponsored by Analog Devices, Inc.
Presenter: Reza Moghimi, Applications Engineering Mgr., Analog Devices, Inc.

Live Broadcast date: Wednesday, January 16, 2008, 12:00 PM ET (NOW ARCHIVED) In this session, our expert will cover the types, sources, characteristics, and analysis techniques of noise, and introduce a low-noise design process.


Noise Optimization in Sensor Signal Conditioning Circuits (Part II)
Sponsored by Analog Devices, Inc.
Presenter: Reza Moghimi, Applications Engineering Mgr., Analog Devices, Inc.

Live Broadcast date: Wednesday, February 13, 2008, 12:00 PM ET In this session, our expert will step through the entire design process and demonstrate how to manage noise to meet required signal chain performance objectives. Design "Do's" and "Don'ts" as well as a number of circuit optimization techniques will be presented.


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