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ADP7159
2 A, Ultralow Noise, High PSRR, Adjustable Output, RF Linear Regulator
Alternative Parts
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: 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)
- 68 dB from 1 kHz to 100 kHz
- 45 dB at 1 MHz
- Dropout voltage: 200 mV typical at IOUT = 2 A, VOUT = 3.3 V
- Initial accuracy: ±0.6% at ILOAD = 10 mA
- Accuracy over line, load, and temperature: ±1.5%
- See data sheet for additional features
Product Details
The ADP7159 is an adjustable linear regulator that operates from 2.3 V to 5.5 V and provides up to 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 ADP7159 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 of the ADP7159 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 ADP7159 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 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 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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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:
LTpowerCAD
LTpowerCAD® is a power supply design program which selects power stage components, provides detailed power efficiency, shows quick loop Bode plot stability and load transient analysis, and can export to LTspice for simulation.
Design tools for the following parts are available in LTpowerCAD:
Design Tools
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
Reference Materials
Solutions Bulletins & Brochures (1)
Lowest Noise LDOs Enable Cutting Edge Signal Chain Performance
Press Releases (1)
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.
Support & Discussions
ADP7159 Discussions
Sample & Buy
The USA 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. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.