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ADM7151ACPZ-04-R7
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Product Detailed Parameters
- Description：IC REG LIN POS ADJ 800MA 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)：16V
- Voltage - Output (Min/Fixed)：1.5V
- Voltage - Output (Max)：5.1V
- Voltage Dropout (Max)：1.2V @ 800mA
- Current - Output：800mA
- Current - Quiescent (Iq)：7 mA
- Current - Supply (Max)：12 mA
- PSRR：94dB ~ 53dB (1kHz ~ 1MHz)
- Control Features：Enable
- Protection Features：Over Temperature, Short Circuit
- 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 ADM7151ACPZ-04-R7 is an adjustable ultralow noise, high PSRR RF linear regulator manufactured by Analog Devices. It operates within a 4.5 V to 16 V input voltage range and delivers up to 800 mA of output current. The output voltage is adjustable from 1.5 V to 5.1 V using external resistors. Key electrical parameters include a quiescent current of 4.3 mA at no load, a shutdown current of 0.1 µA, and a dropout voltage of 0.6 V at 5 V output with an 800 mA load. It features a typical power supply rejection ratio exceeding 90 dB from 1 kHz to 100 kHz.
Feature Summary
- Ultralow noise performance with 1.7 nV/√Hz spectral density from 10 kHz to 1 MHz
- High power supply rejection ratio (PSRR) exceeding 90 dB across the 1 kHz to 100 kHz frequency range
- Optimized for stability with standard 10 μF ceramic output capacitors
- Low shutdown current consumption of 0.1 μA when disabled
Applications
- RF mixers, phase-locked loops (PLLs), and voltage-controlled oscillators (VCOs)
- Clock distribution circuits
- Ultrasound and other imaging applications
- High-speed RF transceivers
- Cable digital-to-analog converter (DAC) drivers
Procurement Notes
Verify the specific suffix R7 indicates reel packaging configuration. Confirm the ACPZ designation corresponds to the 8-lead LFCSP package type. Ensure the -04 model variant matches the required input/output voltage headroom for optimal PSRR performance in the target application environment.
Selection Notes
Select this component for designs requiring high linearity and minimal signal degradation in sensitive RF paths. The -04 model variant is specifically optimized for higher input voltages relative to the output, ensuring efficient power dissipation while maintaining superior ripple rejection characteristics compared to fixed-output alternatives.
Part Context
This device belongs to the ADM7151 series of ultralow noise linear regulators designed for radio frequency applications. It utilizes a P-channel MOSFET pass transistor controlled by an error amplifier with an internal active ripple filter. The series offers two models tailored to different input-to-output voltage ratios to minimize power loss without compromising noise or PSRR specifications.
Replacement Considerations
ADM7151ACPZ-02-R7
FAQ
How is the output voltage adjusted on the ADM7151?
The output voltage is set between 1.5 V and 5.1 V using an external resistor divider connected to the REF and REF_SENSE pins, calculated as VOUT = 1.5 V × (R1 + R2)/R2.
What is the minimum recommended output capacitor value?
The regulator is stable with a minimum of 10 μF ceramic output capacitor, which helps maintain excellent transient response and low noise performance.
