ADA4691-2 Low Power, Wideband, Low Noise, Rail-to-Rail Output, Dual Op Amp

The ADA4691-2 and ADA4692-2 are dual, rail-to-rail output, single-supply amplifiers featuring low power, wide bandwidth, and low noise. The ADA4691-2 has two independent shutdown pins, allowing further reduction in supply current. These amplifiers are ideal for a wide variety of applications. Audio preamps, filters, IR/photodiode amplifiers, charge amps, and high impedance sensors all benefit from this combination of performance features.

Applications for these amplifiers include consumer audio personal players with low noise and low distortion that provide enough gain and slew rate response over the audio band at low power. Industrial applications with high impedance sensors, such as pyroelectric sensors and other IR sensors, benefit from the high impedance input, low offset drift, and enough bandwidth and response for low gain applications.

The ADA4691-2 and ADA4692-2 are specified over the extended industrial temperature range (−40°C to +125°C). The ADA4691-2 is available in a 10-lead LFCSP package, and the ADA4692-2 is available in an 8-lead SOIC package.

Applications

Portable audio: MP3, PDA, smart phone, notebook
Portable instrumentation
Portable medical devices
Photodiode amplifiers
Sensor amplifiers
Low-side current sense
ADC drivers
Active filters
Sample-and-hold
Automotive sensors

Features and Benefits

Low power: 180µA Typical

Low distortion: 0.003% THD + N

Low noise: 16 nV/√Hz typical

3.6 MHz bandwidth

Available in very small 2 mm x 2 mm LFCSP packages

Offset voltage: 500 μV typical

Low offset voltage drift: 4 μV/°C maximum

Very low input bias currents: 0.5 pA typical

2.7 V to 5 V single supply or ±1.35 V to ±2.5 V dual supply

Amplifiers

SPICE Models

ADA4691 SPICE Macro Model .UNDEFINED

Data Sheets

Document	note
Low Power, 3.6 MHz, Low Noise, Rail-to-Rail Output, Operational Amplifiers (Rev. D)	PDF 699 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 1000+	RoHS
ADA4691-2ACBZ-R7 Production	9 ball WLCSP (1.21x1.22)	REEL 3000	-40 to 125C	0.57	Y
ADA4691-2ACBZ-RL Last Time Buy	9 ball WLCSP (1.21x1.22)	REEL 10000	-40 to 125C	0.57	Y
ADA4691-2ACPZ-R7 Production	10 ld LFCSP (2x2mm)	REEL 3000	-40 to 125C	0.57	Y
ADA4691-2ACPZ-RL Last Time Buy	10 ld LFCSP (2x2mm)	REEL 10000	-40 to 125C	0.57	Y

Evaluation Boards

Part Number	Description	Price	RoHS
EVAL-PRAOPAMP-2CPZ	Dual CP-8 lead LFCSP Evaluation Board	20.19	Y
EVAL-PRAOPAMP-2RMZ	Dual RM-8 lead MSOP Evaluation Board	20.19	Y
EVAL-PRAOPAMP-2RZ	Dual R-8 lead SOIC Evaluation Board	20.19	Y

Low Power, 3.6 MHz, Low Noise, Rail-to-Rail Output, Operational Amplifiers (Rev. D) ada4692-2

低功耗、3.6 MHz、低噪声、轨到轨输出运算放大器 (Rev. D) ada4692-2

ADA4691 SPICE Macro Model ada4691-2