ADP7157
1.2 A, Ultralow Noise, High PSRR, Adjustable Output, RF Linear Regulator
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Overview
Features and Benefits
- 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
- Supported by ADIsimPower tool
Product Details
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
Product Categories
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
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Documentation & Resources
Tools & Simulations
LTspice
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.
Models for the following parts are available in LTspice:
ADP7157-01
ADP7157-02
ADP7157-03
ADP7157-04
Design Tool
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.
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| ADP7157ACPZ-01-R7 | Material Declaration | Reliability Data | 10-Lead LFCSP (3mm x 3mm) | |
| ADP7157ACPZ-02-R7 | Material Declaration | Reliability Data | 10-Lead LFCSP (3mm x 3mm) | |
| ADP7157ACPZ-03-R7 | Material Declaration | Reliability Data | 10-Lead LFCSP (3mm x 3mm) | |
| ADP7157ACPZ-04-R7 | Material Declaration | Reliability Data | 10-Lead LFCSP (3mm x 3mm) | |
| ADP7157ARDZ-01-R7 | Material Declaration | Reliability Data | 8-Lead SOIC w/ EP | |
| ADP7157ARDZ-02-R7 | Material Declaration | Reliability Data | 8-Lead SOIC w/ EP | |
| ADP7157ARDZ-03-R7 | Material Declaration | Reliability Data | 8-Lead SOIC w/ EP | |
| ADP7157ARDZ-04-R7 | Material Declaration | Reliability Data | 8-Lead SOIC w/ EP | |
| Wafer Fabrication Data |
Support & Discussions
ADP7157 Discussions
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.