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ADP7156ARDZ-1.2-R7
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Product Detailed Parameters
- Description：IC REG LIN 1.2V 1.2A 8-SOIC-EP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：1.2V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- Current - Output：1.2A
- Current - Quiescent (Iq)：8 mA
- Current - Supply (Max)：12 mA
- PSRR：-
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Supplier Device Package：8-SOIC-EP
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Overview
The ADP7156ARDZ-1.2-R7 is a fixed-output linear regulator providing 1.2 V at up to 1.2 A load current. It operates from an input voltage range of 2.3 V to 5.5 V with a typical dropout voltage of 80 mV at 600 mA. The device features ultralow noise, delivering 0.9 µV rms integrated noise (100 Hz to 100 kHz) and 80 dB PSRR (1 kHz to 100 kHz). Quiescent current is 4.0 mA at no load, reducing to 0.2 µA in shutdown. Initial accuracy is ±0.6% at 25°C.
Feature Summary
- Ultralow noise architecture optimized for RF applications
- High power supply rejection ratio across wide frequency bands
- Precision enable pin with defined logic thresholds
- Stable operation with standard ceramic output capacitors
Applications
- Phase-locked loops (PLLs)
- Voltage controlled oscillators (VCOs)
- Backhaul and microwave links
Procurement Notes
Verify the specific suffix 'R7' indicates reel packaging when confirming order details. Ensure the 'A' grade designation matches required temperature and performance specifications. Confirm the fixed 1.2 V output variant aligns with circuit design requirements before procurement.
Selection Notes
Select this component for designs requiring high PSRR and minimal noise in compact form factors. The 1.2 A capability supports demanding loads while maintaining stability with small ceramic capacitors. Evaluate thermal dissipation based on the difference between input and output voltages at maximum load current.
Part Context
This part belongs to the ADP7156 family of ultralow noise, high PSRR RF linear regulators. It shares architectural similarities with the ADP7157 and ADP7158 series but offers lower current ratings. The device is designed for sensitive analog and RF circuits requiring clean power supplies within a small footprint.
Replacement Considerations
Direct replacements include other ADP7156 variants with different fixed output voltages or adjustable versions like the ADP7157. Cross-family alternatives such as the ADM7155 offer similar low-noise characteristics but differ in current capacity and package options.
