Features and Benefits
- Input voltage supply range:
- 2.3 V to 5.5 V
- 300 mA maximum output current
- Fixed and adjustable output voltage versions
- Very low dropout voltage:
- 85 mV at 300 mA load
- Low quiescent current:
- 45 μA at no load
- Low shutdown current: <1 μA
- Initial accuracy: ±1% accuracy
- See Data Sheet for additional features
The ADP122/ADP123 are low quiescent current, low dropout linear regulators. They are designed to operate from an input voltage between 2.3 V and 5.5 V and to provide up to 300 mA of output current. The low 85 mV dropout voltage at a 300 mA load improves efficiency and allows operation over a wide input voltage range.
The low 170 μA of quiescent current at full load makes the ADP122 ideal for battery-operated portable equipment.
The ADP122 is capable of 31 fixed output voltages from 1.75 V to 3.3 V. The ADP123 is the adjustable version of the device and allows the output voltage to be set between 0.8 V and 5.0 V by an external voltage divider.
The ADP122/ADP123 are specifically designed for stable operation with tiny 1 μF ceramic input and output capacitors to meet the requirements of high performance, space constrained applications.
The ADP122/ADP123 have an internal soft start that gives a constant start-up time of 350 μs. Short-circuit protection and thermal overload protection circuits prevent damage in adverse conditions. The ADP122/ADP123 are available in a tiny, 5-lead TSOT package and 6-lead LFCSP package for the smallest footprint solution to meet a variety of portable applications.
- Digital camera and audio devices
- Portable and battery-powered equipment
- Automatic meter reading (AMR) meters
- GPS and location management units
- Medical instrumentation
- Point-of-sale equipment
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
These evaluation boards are used to demonstrate the functionality of the ADP123 linear regulators.
Simple device measurements such as line and load regulation, dropout, and ground current can be demonstrated with just a single voltage supply, a voltmeter, a current meter, and load resistors.
The Zynq®-7000 All Programmable SoC Evaluation Kit Optimized for JESD204B provides a data capture platform for many of the RadioVerse families of wideband transceiver evaluation boards. A single 12 V power supply provides power for both the Zynq® and the RadioVerse evaluation boards. The data capture platform interfaces to the RadioVerse evaluation boards through a variety of interfacing standards including JESD207 and JESD204B. The JESD204B interface on the Zynq® evaluation system supports up to 12.5 Gbps lane rates. A variety of interface options allows the evaluation kit to interface directly to a PC monitor, keyboard, and mouse as well to a PC running the Transceiver Evaluation or Prototyping Software Packages.
Comparison of ZC706 and EVAL-TPG-ZYNQ3 is listed as below.
|Board||FPGA part no.||Speed grade||Package type||GTX speed supported (Gb/s)||Transceiver Evaluation Platform Supported|
|ZC706||XC7Z045 FFG 900 -2||-2||FF||10.3125||AD9371, AD9375|
|EVAL-TPG-ZYNQ3||XC7Z045 FFG 900 -3||-3||FF||12.5||AD9371, AD9375, ADRV9009, ADRV9008-1/-2|
Features & Benefits
- Upgraded with -3 speed grade XC7Z045 FFG900 supporting up to 12.5 Gbps JESD204B Lane Rates
- 1 GB (PS) DDR3 Component Memory
- 1 GB (PL) SODIM Memory
- GigE Ethernet
- USB Host
- FMC LPC and HPC Expansion Ports
- 12 V Adapter powers Zynq® Evaluation Kit
- Provides Power for RadioVerse Transceiver Evaluation Boards via FMC Connector
Software & Systems Requirements
Tools & Simulations
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® 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:
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
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.
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.