Date: 29/09/2011

4 new rail-to-rail high-speed amps feature 1 nV/vHz noise and 120-V/µs-slew rate

Analog Devices, Inc. has unveiled a series of high-speed amplifiers featuring low noise and low power. These are designed for portable, multi-channel and low power instrumentation and healthcare equipment. The ADA4896-2 (dual), ADA4897-1(single) and ADA4897-2 (dual) high-speed amplifiers provide the highest large-signal bandwidth and slew rate with the lowest noise available today in a rail-to-rail amplifier under 10 mW, claims ADI. Each amplifier features low noise of 1 nV/vHz and 120-V/µs-slew rate while consuming only 3 mA of supply current. Further, the 1/f noise @10Hz is a low 2.4 nV/vHz.

Also announced, as part of this high-speed amplifier series was the ADA4895-2 dual de-compensated high-speed amplifier. It delivers 1.5-GHz gain-bandwidth product at gains of +10 and greater, making it suitable as a high-speed, high-gain pre-amplifier.

The new rail-to-rail amplifiers operate across the extended industrial temperature range of -40°C to +125°C and offer a 3-V to 10-V supply range. The ADA4895-2 and ADA4897-1/ -2 include an output disable feature.


Key features of high speed amplifers include:
Low wideband noise: 1 nV/vHz
Low 1/f noise: 2.4 nV/vHz @ 10 Hz
Low distortion: -115 dBc @ 100 kHz, Vo= 2 V p-p
Low power: <3 mA
High speed
ADA4896-2, ADA4897-1, ADA4897-2
230 MHz small signal bandwidth
35 MHz large signal bandwidth
120 V/µs slew rate
ADA4895-2 (de-compensated)
1.5-GHz gain-bandwidth product (gain =+10)
500-V/µs slew rate

Availability, Pricing and Complementary ComponentsProduct Features Availability Price Each Per 1,000 Packaging
ADA4897-1 Single, Disable Full Volume Production $1.89 8-lead SOIC
6-lead SOT
ADA4897-2 Dual, Disable Samples Now $3.20 10-lead MSOP
ADA4896-2 Dual Full Volume Production $3.20 8-lead LFCSP
8-lead MSOP
ADA4895-2 Dual, Disable (Gain =+10) Samples Now $3.20 10-lead MSOP


For more information visit: www.analog.com