ADP7156

RECOMMENDED FOR NEW DESIGNS

1.2 A, Ultralow Noise, High PSRR, Fixed Output, RF Linear Regulator

Data Sheet (Rev. F) Product Selection Table

Part Models: 21
1ku List Price: Starting From $3.17

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Overview

Input voltage range: 2.3 V to 5.5 V
16 standard voltages between 1.2 V and 3.3 V available
Maximum load current: 1.2 A
Low noise
- 0.9 µV rms total integrated noise from 100 Hz to 100 kHz
- 1.6 µV rms total integrated noise from 10 Hz to 100 kHz
Noise spectral density: 1.7 nV/√Hz from 10 kHz to 1 MHz
Power supply rejection ratio (PSRR)
- 80 dB from 1 kHz to 100 kHz; 60 dB at 1 MHz, V_OUT = 3.3 V, V_IN = 4.0 V
Dropout voltage: 120 mV typical at I_OUT = 1.2 A, V_OUT = 3.3 V

Initial accuracy: ±0.6% at I_LOAD = 10 mA
Initial accuracy over line, load, and temperature: ±1.5%
Quiescent current: I_GND = 4.0 mA at no load, 7 mA at 1.2 A
Low shutdown current: 0.2 μA
Stable with a 10 µF ceramic output capacitor
Precision enable
10-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC packages
AEC-Q100 qualified for automotive applications
Enables functional safety at system level

The ADP7156 is a linear regulator that operates from 2.3 V to 5.5 V and provides up to 1.2 A of output current. Using an advanced proprietary architecture, it provides high power supply rejection and ultralow noise, achieving excellent line and load transient response with only a 10 μF ceramic output capacitor.

There are 16 standard output voltages for the ADP7156. The following voltages are available from stock: 1.2 V, 1.8 V, 2.0 V, 2.5 V, 2.8 V, 3.0 V and 3.3 V. Additional voltages available by special order are 1.3 V, 1.5 V, 1.6 V, 2.2 V, 2.6 V, 2.7 V, 2.9 V, 3.1 V, and 3.2 V.

The ADP7156 regulator typical output noise is 0.9 μV rms from 100 Hz to 100 kHz and 1.7 nV/√Hz for noise spectral density from 10 kHz to 1 MHz. The ADP7156 is available in a 10-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC packages, making it not only a very compact solution, but also providing excellent thermal performance for applications requiring up to 1.2 A of output current in a small, low profile footprint.

Applications

Regulation to noise sensitive applications: phase-locked loops (PLLs), voltage controlled oscillators (VCOs), and PLLs with integrated VCOs
Communications and infrastructure
Backhaul and microwave links

Part Models: 21
1ku List Price: Starting From $3.17

Documentation

Data Sheet 1

ADP7156: 1.2 A, Ultralow Noise, High PSRR, RF Linear Regulator Data Sheet (Rev.F) 05/30/2023

User Guide 1

UG-809: Evaluating the ADP7156 Ultralow Noise, 1.2 A, Fixed Output, RF Linear Regulator (Rev.0) 03/28/2016

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
ADP7156ACPZ-1.2-R7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156ACPZ-1.8-R7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156ACPZ-2.0-R7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156ACPZ-2.5-R7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156ACPZ-2.8-R7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156ACPZ-3.0-R7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156ACPZ-3.3-R7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156ARDZ-1.2-R7	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156ARDZ-1.8-R7	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156ARDZ-2.0-R7	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156ARDZ-2.5-R7	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156ARDZ-2.8-R7	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156ARDZ-3.0-R7	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156ARDZ-3.3-R7	8-Lead SOIC w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156WACPZ-1.2-R7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156WACPZ-1.8-R7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156WACPZ-2.0-R7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156WACPZ-2.5-R7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156WACPZ-2.8-R7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156WACPZ-3.0-R7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
ADP7156WACPZ-3.3-R7	10-Lead LFCSP (3mm x 3mm)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
ADP7157	RECOMMENDED FOR NEW DESIGNS	1.2 A, Ultralow Noise, High PSRR, Adjustable Output, RF Linear Regulator

Tools & Simulations

LTspice

Models for the following parts are available in LTspice:

ADP7156-1.2
ADP7156-1.8
ADP7156-2.0
ADP7156-2.5
ADP7156-2.8
ADP7156-3.0
ADP7156-3.3

ADI Linear Regulator Design Tool and Parametric Search

Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.

Open Tool

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

ADP7156 Evaluation Board

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Features and Benefits

Power supply rejection ratio (PSRR)

80 dB from 1 kHz to 100 kHz; 60 dB at 1 MHz, V_OUT = 3.3 V, V_IN = 4.0 V

Low noise
- 0.9 µV rms total integrated noise from 100 Hz to 100 kHz
- 1.6 µV rms total integrated noise from 10 Hz to 100 kHz
Noise spectral density: 1.7 nV/√Hz from 10 kHz to 1 MHz
Low dropout voltage: 120 mV typical at V_OUT = 3.3 V, I_OUT = 1.2 A
Maximum output current: 1.2 A
Input voltage range: 2.3 V to 5.5 V
Low quiescent and shutdown current
Initial accuracy: ±0.6% at I_LOAD = 10 mA
Accuracy over line, load, and temperature: ±1.5%
10-lead 3mm x 3mm LFCSP and 8-lead SOIC packages

Product Details

The ADP7156CP-3.3EVALZ evaluation board demonstrates the operation and functionality of the ADP7156 ultralow noise, 1.2 A, fixed output, radio frequency (RF) linear regulator.

Simple device measurements, such as line and load regulation, dropout voltage, and ground current, can be demonstrated using only a single voltage supply, load resistors, and a voltmeter or an ammeter.

Complete specifications for the ADP7156 ultralow noise, 1.2 A, linear regulator are available in the ADP7156 data sheet available from Analog Devices, Inc., and should be consulted in conjunction with user guide UG-809 when using the evaluation board.

Resources

UG-809: Evaluating the ADP7156 Ultralow Noise, 1.2 A, Fixed Output, RF Linear Regulator (Rev.0)
3/28/2016

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