ADA4841-1YRJZ-RL

Overview

The ADA4841-1YRJZ-RL is a single-channel, unity-gain stable operational amplifier manufactured by Analog Devices Inc. It features low power consumption with a maximum quiescent current of 1.5 mA per amplifier and a supply voltage range of 2.7 V to 12 V. The device provides a wideband voltage noise density of 2.1 nV/√Hz and an input current noise of 1.4 pA/√Hz at 100 kHz. It offers a gain bandwidth product of 80 MHz and a slew rate of 12 V/µs. The output stage supports rail-to-rail swing within 50 mV of either supply rail. The component is housed in a 6-lead SOT-23 package and operates over an industrial temperature range from -40°C to +125°C.

Feature Summary

• Rail-to-rail output capability extending to within 50 mV of the supply rails for maximum dynamic range.
• Integrated power-down function that significantly reduces quiescent current when disabled.
• Low distortion performance with high spurious-free dynamic range suitable for precision signal processing.
• Capable of driving capacitive loads up to 15 pF with minimal peaking.

Applications

• Driving 16-bit PulSAR ADCs
• Battery-powered instrumentation
• Low power, low noise signal processing

Procurement Notes

Verify the specific ordering suffix YRJZ-RL corresponds to the 6-lead SOT-23 package and reel packaging configuration required for your assembly process. Confirm that the manufacturer part number matches the exact revision level needed for your design specifications. Ensure compatibility with surface-mount placement equipment for the small outline transistor package.

Selection Notes

Select this component when designing circuits that require a balance between low power consumption and high-speed performance. It is suitable for applications needing rail-to-rail output swing on low voltage supplies. Consider the integrated power-down feature if system battery life is a critical constraint. Verify that the 80 MHz bandwidth meets the signal frequency requirements of the application.

Part Context

This device belongs to the ADA4841 family of low power, low noise amplifiers. The ADA4841-1 variant contains a single amplifier channel, whereas the ADA4841-2 contains dual channels. Both variants share identical electrical characteristics and are designed for portable and industrial applications requiring precision analog signal conditioning.

Replacement Considerations

The ADA4841-1YRZ is a pin-compatible alternative available in an 8-lead SOIC package. Designers should verify thermal resistance differences and footprint dimensions when substituting packages. Electrical parameters remain consistent across the package variations within the same series.

FAQ

How does the power-down pin affect the quiescent current?

When the power-down pin is driven to a logic low level, the quiescent current drops significantly to approximately 40 µA or less, depending on the supply voltage, compared to the active mode current of 1.5 mA maximum.

What is the input common-mode voltage range?

The input common-mode voltage range extends down to the negative supply rail (−VS). The upper limit is typically one volt below the positive supply rail at room temperature.

Can the amplifier drive capacitive loads directly?

Yes, the amplifier can drive capacitive loads up to 15 pF with minimal peaking. For larger capacitive loads, external isolation resistors may be required to maintain stability.