ADA4891-2 Low Cost CMOS, High Speed, Rail-to-Rail Amplifiers (Dual)

Applications

The ADA4891-1 (single), ADA4891-2 (dual), ADA4891-3 (triple), and ADA4891-4 (quad) are CMOS, high speed amplifiers that offer high performance at a low cost. The amplifiers feature true single-supply capability, with an input voltage range that extends 300 mV below the negative rail.

In spite of their low cost, the ADA4891 family provides high performance and versatility. The rail-to-rail output stage enables the output to swing within 50 mV of each rail, enabling maximum dynamic range.

The ADA4891 family of amplifiers is ideal for imaging applications, such as consumer video, CCD buffers, and contact image sensor buffers. Low distortion and fast settling time also make them ideal for active filter applications.

The ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4 are available in a wide variety of packages.

The ADA4891-1 is available in 8-lead SOIC and 5-lead SOT-23 packages.

The ADA4891-2 is available in 8-lead SOIC and 8-lead MSOP packages.

The ADA4891-3 and ADA4891-4 are available in 14-lead SOIC and 14-lead TSSOP packages.

The amplifiers are specified to operate over the extended temperature range of −40°C to +125°C.

Features and Benefits

High speed and fast settling
−3 dB bandwidth: 220 MHz (G = +1)
Slew rate: 170 V/μs
Settling time to 0.1%: 28 ns

Video specifications (G = +2, R_L = 150 Ω)
0.1 dB gain flatness: 25 MHz
Differential gain error: 0.05%
Differential phase error: 0.25°

Single-supply operation
Wide supply range: 2.7 V to 5.5 V
Output swings to within 50 mV of supply rails

Low distortion: 79 dBc SFDR at 1 MHz

Linear output current: 125 mA at −40 dBc

Low power:
4.4 mA per amplifier

Amplifiers

SPICE Models

ADA4891 SPICE Macro Model .CIR

Data Sheets

Document	note
ADA4891-1/ADA4891-2/ADA4891-3/ADA4891-4: Low Cost CMOS, High Speed, Rail-to-Rail Amplifiers Data Sheet (Rev. F)	PDF 646 kB

User Guides

Document	note
UG-886: Universal Evaluation Board for Dual High Speed Op Amps Offered in 8-Lead MSOP	PDF 155.96 K
UG-128: Universal Evaluation Board for Dual High Speed Op Amps in SOIC Packages	PDF 208 kB

Order Information

Part Number	Package	Packing Qty	Temp Range	Price 100-499	Price 1000+	RoHS
ADA4891-2ARMZ Production	8 ld MSOP	OTH 50	-40 to 125C	0.81	0.69	Y
ADA4891-2ARMZ-R7 Production	8 ld MSOP	REEL 1000	-40 to 125C	0	0.69	Y
ADA4891-2ARMZ-RL Production	8 ld MSOP	REEL 3000	-40 to 125C	0	0.69	Y
ADA4891-2ARZ Production	8 ld SOIC	OTH 98	-40 to 125C	0.81	0.69	Y
ADA4891-2ARZ-R7 Production	8 ld SOIC	REEL 1000	-40 to 125C	0	0.69	Y
ADA4891-2ARZ-RL Production	8 ld SOIC	REEL 2500	-40 to 125C	0	0.69	Y
ADA4891-2WARMZ-R7 Production	8 ld MSOP	REEL 1000	-40 to 125C	0	0.86	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