1 V/√Hz, Low Power Operational Amplifier

The ADA4897-2 is a unity gain stable, low noise, rail-to-rail output, high speed voltage feedback amplifier that has a quiescent current of 3 mA. With the 1/f noise of 2.4 nV/√Hz at 10 Hz and a spurious-free dynamic range of −80 dBc at 2 MHz, the ADA4897-2 is an ideal solution in a variety of applications, including ultrasound, low noise preamplifiers, and drivers of high performance ADCs. Analog Devices, Inc., proprietary next generation SiGe bipolar process and innovative architecture enables such a high performance amplifier.

TheADA4897-2 has 230 MHz bandwidth, 120 V/µs slew rate, and settle to 0.1% in 45 ns. With a wide supply voltage range (3 V to 10 V), the ADA4897-2/ADA4897-1 is an ideal candidates for systems that require high dynamic range, precision, and high speed.

The ADA4897-2 is available in an 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

* Download ADA4897-2-KGD data sheet. Available as Known Good Die and fully guaranteed to data sheet specifications

* Low wideband noise

1 nV/√Hz

2.8 pA/√Hz

* Low 1/f noise: 2.4 nV/√Hz @ 10 Hz

* Low distortion: −115 dBc @ 100 kHz, VOUT = 2 V p-p

* Low power: 3 mA/amp

* Low input offset voltage: 0.5 mV maximum

* High speed

230 MHz, −3 dB bandwidth (G = +1)

120 V/µs slew rate

45 ns settling time to 0.1%

* See data sheet for additional features