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ADM7155ACPZ-01-R7
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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 600MA 8LFCSP
- 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)：1.8V
- Voltage Dropout (Max)：0.21V @ 600mA
- Current - Output：600mA
- Current - Quiescent (Iq)：7 mA
- Current - Supply (Max)：10 mA
- PSRR：92dB ~ 65dB (1kHz ~ 1MHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：8-WFDFN Exposed Pad, CSP
- Supplier Device Package：8-LFCSP-WD (3x3)
- Grade：-
- Qualification：-
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Overview
The ADM7155ACPZ-01-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 a spectral density of 1.5 nV/√Hz from 10 kHz to 1 MHz. The device features high power supply rejection ratio (PSRR) exceeding 90 dB from 200 Hz to 200 kHz and maintains stability with only a 10 μF ceramic output capacitor.
Feature Summary
- Ultralow noise architecture utilizing heavily filtered reference voltage for minimal output ripple
- High power supply rejection ratio achieved through internal active ripple filter isolation
- Precision enable pin with defined logic thresholds for controlled startup and shutdown
- Optimized for use with low ESR multilayer ceramic capacitors
Applications
- PLLs and VCOs requiring strict noise regulation
- Communications infrastructure equipment
- Backhaul and microwave links
Procurement Notes
Verify the specific -01 suffix against official documentation to confirm the intended output voltage optimization range. Confirm package type matches the required PCB footprint. Check humidity sensitivity levels and storage conditions prior to assembly. Ensure input and output capacitor selections meet minimum capacitance and ESR specifications for stable operation.
Selection Notes
Select this model when input voltages are between 2.3 V and 5.5 V and output adjustment is required. Consider thermal dissipation capabilities based on the voltage differential and load current. Verify that the application environment stays within the specified operating temperature range. Evaluate the need for external bypass capacitors on the BYP and REF pins to achieve optimal noise performance.
Part Context
This component belongs to the ADM7155 family of RF linear regulators designed for noise-sensitive applications. It shares architectural similarities with fixed-output variants like the ADM7154 but offers adjustable output flexibility. The series targets radio frequency systems where clean power delivery is critical for signal integrity.
Replacement Considerations
ADM7155ACPZ-02-R7
FAQ
How does the ADM7155 maintain stability with ceramic capacitors?
The device is specifically designed to be stable with low ESR multilayer ceramic capacitors, requiring a minimum of 10 μF output capacitance.
What is the function of the BYP pin?
The BYP pin connects to a low noise bypass capacitor to reduce output noise spectral density.
