AD8273 Very Low Distortion, Dual-Channel, Audio Difference Amplifier

The AD8273 operates on both single and dual supplies and only requires 2.5 mA maximum supply current for each amplifier. It is specified over the industrial temperature range of −40°C to +85°C and is fully RoHS compliant. Applications ADC drivers High performance audio Instrumentation amplifier building blocks Level translators Automatic test equipment Sine/cosine encoders

The AD8273 is a low distortion, dual-channel amplifier with internal gain setting resistors. With no external components, it can be configured as a high performance difference amplifier (G = ½ or 2), inverting amplifier (G = ½ or 2), or noninverting amplifier (G = 1½ or 3).

Applications

ADC drivers
High performance audio
Instrumentation amplifier building blocks
Level translators
Automatic test equipment
Sine/cosine encoders

Features and Benefits

±4000 V HBM ESD

Very low distortion
0.00025% THD + N (20 kHz)
0.0015% THD + N (100 kHz)
Drives 600 Ω loads

Two gain settings
Gain of ½ (−6 dB)
Gain of 2 (+6 dB)
0.05% maximum gain error
10 ppm/°C maximum gain drift

Excellent ac specifications
20 V/μs minimum slew rate
800 ns to 0.01% settling time

High accuracy dc performance
77 dB minimum CMRR
700 μV maximum offset voltage

14-lead SOIC package

Supply current: 2.5 mA maximum per channel

Supply range: ±2.5 V to ±18 V

Audio & Video Products

Audio Amplifiers

Data Sheets

Document	note
AD8273: Very Low Distortion, Dual-Channel, High Precision Difference Amplifier Data Sheet (Rev. B)	PDF 412 kB

Application Notes

Document	note
AN-1328: High Performance, Low Noise Studio Microphone with MEMS Microphones, Analog Beamforming, and Power Management (Rev. A)	PDF 342.87 K

User Guides

Document	note
UG-744: Evaluating the AD8273/AD8277/AD8279	PDF 1.01 M

Technical Books

Document	note

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
AD8273ARZ Production	14 ld SOIC	OTH 56	-40 to 85C	1.92	1.6	Y
AD8273ARZ-R7 Production	14 ld SOIC	REEL 1000	-40 to 85C	1.92	1.6	Y
AD8273ARZ-RL Production	14 ld SOIC	REEL 2500	-40 to 85C	1.92	1.6	Y

Evaluation Boards

Part Number	Description	Price	RoHS
AD8273-EVALZ	Evaluation Board for 14-Lead SOIC	125	Y
AD8277-EVALZ	Evaluation Board for 14-Lead SOIC	125	Y
AD8279-EVALZ	Evaluation Board for 14-Lead SOIC	125	Y

AD8273: Very Low Distortion, Dual-Channel, High Precision Difference Amplifier Data Sheet (Rev. B) ad8273

AN-1328: High Performance, Low Noise Studio Microphone with MEMS Microphones, Analog Beamforming, and Power Management (Rev. A) adp1613

UG-744: Evaluating the AD8273/AD8277/AD8279 ad8273