ADA4896-2ARMZ-R7

Overview

The ADA4896-2ARMZ-R7 is a dual-channel, unity-gain stable, low noise, rail-to-rail output, high-speed voltage feedback amplifier manufactured by Analog Devices Inc. It operates on a supply voltage range of 3 V to 10 V and consumes a quiescent current of 3 mA per amplifier. The device features a −3 dB bandwidth of 230 MHz at G = +1, a slew rate of 120 V/μs, and settles to 0.1% in 45 ns. Input voltage noise density is 1 nV/√Hz at 100 kHz with 2.4 nV/√Hz at 10 Hz. It provides an open-loop gain of 110 dB, input offset voltage of ±500 μV maximum, and supports up to 80 mA output current.

Feature Summary

• Rail-to-rail output stage designed for driving heavy feedback loads and capacitive loads.
• Low wideband noise performance with minimal 1/f noise for precision signal processing.
• High speed characteristics including 230 MHz bandwidth and 120 V/μs slew rate.
• Low power consumption of 3 mA per amplifier across a wide 3 V to 10 V supply range.

Applications

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

Procurement Notes

Verify the specific package type and tape-and-reel configuration against the official datasheet ordering guide before procurement. Confirm that the component meets RoHS compliance requirements for your region. Ensure the operating temperature range of -40°C to +125°C aligns with your system's thermal design constraints. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a dual-channel amplifier requires both high speed and low noise within a single package. It is suitable for applications needing rail-to-rail output swing without sacrificing bandwidth. Consider the 8-lead MSOP or LFCSP packages for space-constrained designs. Evaluate the 3 mA quiescent current against total system power budgets compared to higher-performance but more power-hungry alternatives.

Part Context

The ADA4896-2 belongs to the ADA4896-2/ADA4897-1/ADA4897-2 family of amplifiers fabricated on Analog Devices' proprietary SiGe bipolar process. This technology enables high performance with low power consumption. The dual-channel ADA4896-2 complements the single-channel ADA4897-1 and dual-channel ADA4897-2 variants, offering matched performance for differential signal paths.

Replacement Considerations

The ADA4896-2ACPZ-R7 serves as a direct pin-compatible alternative in the LFCSP package. For single-channel applications, the ADA4897-1 offers identical electrical specifications. Verify that any replacement maintains the same 3 mA quiescent current and 230 MHz bandwidth to ensure circuit stability.

FAQ

Is the ADA4896-2 unity-gain stable?

Yes, the ADA4896-2 is a unity-gain stable voltage feedback amplifier.

What is the input 1/f noise specification?

The input voltage noise density is 2.4 nV/√Hz at 10 Hz.

Does the ADA4896-2 have a disable feature?

No, the disable feature is only available on the ADA4897-1 and ADA4897-2 models.