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The ADA4897-1ARJZ is a unity-gain stable, low-noise, rail-to-rail output, high-speed voltage-feedback amplifier with a quiescent current of 3 mA. It features 1/f noise of 2.4 nV/√Hz (at 10 Hz) and a spur-free dynamic range of -80 dBc (at 2 MHz), making it an ideal solution for various applications such as ultrasound, low-noise preamplifiers, and high-performance ADC drivers. This high-performance amplifier is made possible by ADI's proprietary next-generation SiGe bipolar process and innovative structure.

The ADA4897-1ARJZ has a bandwidth of 230 MHz, a slew rate of 120 V/μs, and a 0.1% settling time of 45 ns. It features a wide operating voltage range (3 V to 10 V), making it particularly suitable for systems requiring high dynamic range, accuracy, and high speed.

The ADA4897-1ARJZ is available in a 6-pin SOT-23 package. The ADA4897-1ARJZ operates over a wide industrial temperature range of −40°C to +125°C.

ADA4897-1ARJZ Features  

Low broadband noise  

1 nV/√Hz  

2.8 pA/√Hz  

Low 1/f noise: 2.4 nV/√Hz at 10 Hz  

Low distortion: −115 dBc at 100 kHz with an output voltage (VOUT) of 2 V peak-to-peak

Low power consumption: 3 mA per amplifier

Low input bias voltage: maximum 0.5 mV

High speed

−3 dB bandwidth: 230 MHz (G = +1)

Rise time: 120 V/μs

Settling time to 0.1%: 45 ns

Rail-to-rail output

Wide supply voltage range: 3 V to 10 V

Disable function (ADA4897-1)

ADA4897-1ARJZ Typical Applications

Low-noise preamplifier

Ultrasonic amplifier

PLL loop filter

High-performance ADC driver

DAC buffer

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