ADP7157
ADP7157
RECOMMENDED FOR NEW DESIGNS1.2 A, Ultralow Noise, High PSRR, Adjustable Output, RF Linear Regulator
- Part Models
- 8
- 1ku List Price
- Starting From $4.02
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Overview
- Input voltage range: 2.3 V to 5.5 V
- Adjustable output voltage range (VOUT): 1.2 V to 3.3 V
- Maximum load current: 1.2 A
- Low noise
- 0.9 µV rms typical output noise from 100 Hz to 100 kHz
- 1.6 µV rms typical output 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)
- 82 dB from 1 kHz to 100 kHz
- 55 dB at 1 MHz
- Dropout voltage: 120 mV typical at IOUT = 1.2 A, VOUT = 3.3 V
- Initial accuracy: ±0.6% at ILOAD = 10 mA
- Accuracy over line, load, and temperature: ±1.5%
- Operating supply current (IGND)
- 4.0 mA typical at 0 µA
- 7.0 mA typical at 1.2 A
- Low shutdown current: 0.2 μA typical
- Stable with a 10 µF ceramic output capacitor
- 10-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC packages
- Precision enable
The ADP7157 is an adjustable linear regulator that operates from 2.3 V to 5.5 V and provides up to 1.2 A of output current. Output voltages from 1.2 V to 3.3 V are possible depending on the model. Using an advanced proprietary architecture, the device provides high power supply rejection and ultralow noise, achieving excellent line and load transient response with only a 10 μF ceramic output capacitor.
The ADP7157 is available in four models that optimize power dissipation and PSRR performance as a function of the input and output voltage.
The typical output noise the ADP7157 regulator 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 ADP7157 is available in 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
Documentation
Data Sheet 1
User Guide 1
Video 1
Brochure 1
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 |
|---|---|---|---|
| ADP7157ACPZ-01-R7 | 10-Lead LFCSP (3mm x 3mm) | ||
| ADP7157ACPZ-02-R7 | 10-Lead LFCSP (3mm x 3mm) | ||
| ADP7157ACPZ-03-R7 | 10-Lead LFCSP (3mm x 3mm) | ||
| ADP7157ACPZ-04-R7 | 10-Lead LFCSP (3mm x 3mm) | ||
| ADP7157ARDZ-01-R7 | 8-Lead SOIC w/ EP | ||
| ADP7157ARDZ-02-R7 | 8-Lead SOIC w/ EP | ||
| ADP7157ARDZ-03-R7 | 8-Lead SOIC w/ EP | ||
| ADP7157ARDZ-04-R7 | 8-Lead SOIC w/ EP |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| ADP7156 | RECOMMENDED FOR NEW DESIGNS | 1.2 A, Ultralow Noise, High PSRR, Fixed Output, RF Linear Regulator |
Tools & Simulations
LTspice
Models for the following parts are available in LTspice:
- ADP7157-01
- ADP7157-02
- ADP7157-03
- ADP7157-04
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 ToolLTspice® 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
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ADP7157 Evaluation Board