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Product Detailed Parameters
- Description:IC REG LINEAR 1.2V 1.2A 10LFCSP
- 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:80dB ~ 60dB (1kHz ~ 1MHz)
- Control Features:Enable
- Protection Features:Over Current, Over Temperature
- Operating Temperature:-40°C ~ 125°C
- Mounting Type:Surface Mount
- Package / Case:10-VFDFN Exposed Pad, CSP
- Supplier Device Package:10-LFCSP-WD (3x3)
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Overview
The ADP7156ACPZ-1.2-R7 is a fixed-output linear regulator from Analog Devices, providing a stable 1.2 V output with a maximum load current of 1.2 A. It operates within an input voltage range of 2.3 V to 5.5 V and features ultralow noise performance, characterized by 0.9 µV rms integrated noise from 100 Hz to 100 kHz. The device delivers high power supply rejection ratio (PSRR) of 80 dB from 1 kHz to 100 kHz. It includes precision enable functionality, low shutdown current, and thermal protection, housed in a compact 10-lead LFCSP package.
Feature Summary
- Ultralow noise architecture optimized for RF applications
- High power supply rejection ratio across wide frequency ranges
- Precision enable pin with defined logic thresholds
- Stable operation with standard ceramic capacitors
Applications
- Phase-locked loops (PLLs)
- Voltage controlled oscillators (VCOs)
- Communications infrastructure
- Backhaul and microwave links
Procurement Notes
Verify the specific suffix R7 indicates reel packaging when sourcing. Confirm the 1.2 V fixed output variant matches system requirements. Check for automotive qualification if operating in harsh environments. Ensure input and output capacitor selections meet minimum capacitance and ESR specifications for stability.
Selection Notes
Select this component for designs requiring minimal output noise and high PSRR. The 1.2 A current capability supports moderate power loads. Verify that the input voltage remains above the dropout threshold for the expected load current. Consider thermal dissipation in the LFCSP package for high ambient temperatures.
Part Context
This part belongs to the ADP7156 family of RF linear regulators. Related devices include the ADP7157 with adjustable output and the ADP7158/ADP7159 offering higher current capacity. The series targets noise-sensitive analog and RF circuits requiring precise regulation.
Replacement Considerations
Direct substitutes include other ADI parts like the ADM7155 or ADM7150 for lower current needs. Cross-reference with similar LDOs ensuring matching output voltage, current rating, and noise specifications.
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