ADA4895-2 Low Power, 1 nV/√Hz, G ≥ 10 Stable, Rail-to-Rail Output Amplifier

The ADA4895-2 is a dual, high speed voltage feedback amplifier that is gain ≥ 10 stable with low input noise, rail-to-rail output, and quiescent current of 3 mA per amplifier. With a 1/f noise of 2 nV/√Hz at 10 Hz and a spurious-free dynamic range of −72 dBc at 2 MHz, the ADA4895-2 is an ideal solution in a variety of applications, including ultrasound, low noise preamplifiers, and drivers of high performance ADCs. The Analog Devices, Inc., proprietary next generation SiGe bipolar process and innovative architecture enable this high performance amplifier.

The ADA4895-2 has a large signal bandwidth of 146 MHz at a gain of +10 with a slew rate of 943 V/μs, and settles to 0.1% in 22 ns. The wide supply voltage range (3 V to 10 V) of the ADA4895-2 makes this amplifier an ideal candidate for systems that require high dynamic range, high gain, precision, and high speed.

The ADA4895-2 is available in a 10-lead MSOP package and operates over the extended industrial temperature range of −40°C to +125°C.

Applications

Low noise preamplifier
Ultrasound amplifiers
PLL loop filters
High performance ADC drivers
DAC buffers

Features and Benefits

Low wideband noise
-- 1 nV/√Hz
-- 2.6 pA/√Hz

Low 1/f noise:
2 nV/√Hz at 10 Hz

Low distortion (SFDR):
−96 dBc @ 100 kHz,
V_OUT = 2 V p-p

Low power:
3 mA per amplifier

Low input offset voltage:
350 μV maximum

High speed
-- 236 MHz, −3 dB bandwidth (G=+10)
-- 943 V/µs slew rate
-- 22 ns settling time to 0.1%

Rail-to-rail output

Wide supply range:
3 V to 10 V

Disable feature

Amplifiers

SPICE Models

ADA4895 SPICE Macro-Model .CIR

Data Sheets

Document	note
ADA4895-1/ADA4895-2: Low Power, 1 nV/√Hz, G ≥ 10 Stable, Rail-to-Rail Output Amplifier Data Sheet (Rev. B)	PDF 584.6 K

User Guides

Document	note
UG-337: Universal Evaluation Board for Dual, High Speed Op Amps Offered in 10-Lead MSOP Packages	PDF 284 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADA4895-2ARMZ Production	10 ld MSOP	OTH 50	-40 to 125C	3.86	3.21	Y
ADA4895-2ARMZ-R7 Production	10 ld MSOP	REEL 1000	-40 to 125C	0	3.21	Y
ADA4895-2ARMZ-RL Production	10 ld MSOP	REEL 3000	-40 to 125C	0	3.21	Y

Evaluation Boards

Part Number	Description	Price	RoHS
EVAL-HSAMP-2CPZ-10	Evaluation Bare Board for 10-Lead LFCSP	18.25	Y
EVAL-HSAMP-2CPZ-8	Evaluation Bare Board for 8-Lead LFCSP	18.25	Y
EVAL-HSAMP-2RMZ-10	Evaluation Bare Board for 10-lead MSOP Package	18.25	Y
EVAL-HSAMP-2RMZ-8	Evaluation Bare Board for 8 Lead MSOP	18.25	Y
EVAL-HSAMP-2RZ-8	Evaluation Bare Board for 8 Lead SOIC	18.25	Y