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ADM7155ARDZ-02-R7
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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 600MA 8-SOIC
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Adjustable
- Number of Regulators：1
- Voltage - Input (Max)：5.5V
- Voltage - Output (Min/Fixed)：1.2V
- Voltage - Output (Max)：2.4V
- Voltage Dropout (Max)：0.21V @ 600mA
- Current - Output：600mA
- Current - Quiescent (Iq)：7 mA
- Current - Supply (Max)：10 mA
- PSRR：94dB ~ 61dB (1kHz ~ 1MHz)
- 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
- Grade：-
- Qualification：-
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Overview
The ADM7155ARDZ-02-R7 is an adjustable linear regulator from Analog Devices, operating within a 2.3 V to 5.5 V input voltage range and delivering up to 600 mA of load current. It provides an output voltage range of 1.2 V to 3.4 V with ultralow noise characteristics, including 0.9 μV rms integrated noise from 100 Hz to 100 kHz and 1.5 nV/√Hz spectral density from 10 kHz to 1 MHz. The device features high power supply rejection ratio (PSRR) exceeding 90 dB from 200 Hz to 200 kHz at typical conditions. It operates with a quiescent current of 4 mA at no load and includes precision enable functionality.
Feature Summary
- Ultralow noise performance optimized for RF applications
- High power supply rejection ratio across wide frequency ranges
- Precision programmable enable control
- Stable operation with small ceramic output capacitors
Applications
- PLLs and VCOs requiring low-noise regulation
- Communications infrastructure systems
- Backhaul and microwave links
Procurement Notes
Verify the specific -02 suffix designation against official documentation to confirm the internal VREG threshold optimization for your input voltage range. Confirm package type and thermal requirements match your PCB layout constraints. Ensure all external capacitor selections meet minimum capacitance and ESR specifications for stability.
Selection Notes
Select this model when input voltages are between 2.3 V and 5.5 V and output currents up to 600 mA are required. Consider the -02 variant specifically if your design optimizes for lower input-to-output differentials compared to other models in the series. Evaluate thermal dissipation based on the selected package and ambient temperature conditions.
Part Context
This component belongs to the ADM7155 family of ultra-low noise LDO regulators designed for radio frequency applications. It shares architectural similarities with fixed-output variants like the ADM7154 but offers adjustable output capability. The device integrates an active ripple filter to enhance PSRR performance beyond standard single-stage LDOs.
Replacement Considerations
Direct substitutes include other ADM7155 models such as ADM7155ACPZ-04-R7 or ADM7155CP-02-EVALZ depending on package and voltage optimization needs. Verify that any replacement maintains the same pinout and electrical characteristics for the specific application requirements.
