ADA4817-1ACPZ-R2

Overview

The ADA4817-1ACPZ-R2 is a single-channel, unity-gain stable, ultrahigh-speed voltage feedback operational amplifier with FET inputs. It features a -3 dB bandwidth of 1050 MHz at G=1 and RL=100 Ω, a slew rate of 870 V/µs, and a 0.1% settling time of 9 ns. Input noise is 4 nV/√Hz voltage and 2.5 fA/√Hz current at 100 kHz. The device operates on supply voltages from 5 V to 10 V, drawing 19 mA quiescent current per amplifier. It includes a power-down pin reducing current to 1.5 mA. The component is housed in an 8-lead LFCSP package rated for operation between -40°C and +105°C.

Feature Summary

• Utilizes proprietary eXtra Fast Complementary Bipolar (XFCB) process for ultralow noise and high input impedance.
• Features a low distortion pinout that improves second harmonic distortion and simplifies circuit board layout.
• Includes a dedicated power-down pin to significantly reduce quiescent supply current when inactive.
• Provides linear output current capability up to 40 mA for driving heavy loads.

Applications

• Photodiode amplifiers
• Data acquisition front ends
• ADC drivers

Procurement Notes

Verify the specific ordering suffix ACPZ-R2 against the manufacturer's official ordering guide to confirm the package type and reel quantity. Ensure the procurement source provides valid traceability documentation. Confirm that the received components match the Rev. I datasheet specifications. Check for any product change notifications that may affect performance or reliability parameters prior to final integration.

Selection Notes

Select this amplifier for applications requiring ultrahigh speed combined with low noise characteristics. The FET input stage offers very high input impedance suitable for sensitive signal sources. Consider the thermal resistance of the exposed pad for heat dissipation in dense layouts. Verify that the required supply voltage range fits within the 5 V to 10 V operating limits. Evaluate the need for the power-down feature if system power management is critical.

Part Context

Analog Devices manufactures the ADA4817 series using its proprietary XFCB process technology. This family includes single and dual channel variants designed for wideband transimpedance and data acquisition applications. The devices are engineered to balance high slew rates with minimal input capacitance, addressing the needs of modern high-resolution instrumentation systems.

Replacement Considerations

Consult the official Analog Devices ordering guide for verified substitute part numbers. Cross-reference pinouts and electrical specifications carefully before substitution.

FAQ

How does the power-down function operate?

The amplifier is enabled when the PD pin voltage is within 0.9 V of the positive supply rail. It enters power-down mode when the PD pin voltage is at least 3.5 V below the positive supply, reducing quiescent current to approximately 1.5 mA.

What is the recommended feedback resistance range?

Feedback resistances between 100 Ω and 400 Ω are recommended to minimize peaking in the frequency response without degrading the output stage performance.