ADP7104

20 V, 500 mA, Low Noise, CMOS LDO
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Product Details

The ADP7104 is a CMOS, low dropout linear regulator that operates from 3.3 V to 20 V and provides up to 500 mA of output current. This high input voltage LDO is ideal for regulation of high performance analog and mixed signal circuits operating from 19 V to 1.22 V rails. Using an advanced proprietary architecture, it provides high power supply rejection, low noise, and achieves excellent line and load transient response with just a small 1 μF ceramic output capacitor.

The ADP7104 is available in seven fixed output voltage options and an adjustable version, which allows output voltages that range from 1.22 V to VIN − VDO via an external feedback divider.

The ADP7104 output noise voltage is 15 μV rms and is independent of the output voltage. A digital power-good output allows power system monitors to check the health of the output voltage. A user programmable precision undervoltage lockout function facilitates sequencing of multiple power supplies.

The ADP7104 is available in 8-lead, 3 mm × 3 mm LFCSP and 8-lead SOIC packages. The LFCSP offers a very compact solution and also provides excellent thermal performance for applications requiring up to 500 mA of output current in a small, low-profile footprint.

APPLICATIONS

  • Regulation to noise sensitive applications:
    ADC, DAC circuits, precision amplifiers, high frequency oscillators, clocks and PLLs
  • Communications and Infrastructure
  • Medical and Healthcare
  • Industrial and Instrumentation

Product Lifecycle

checked 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

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Product Details

This product has individual evaluations boards at specific voltages or with specific features as well as the RedyKit™. The RedyKit simplifies product evaluation by providing two assembled and tested evaluation boards, plus a full set of product (voltage) options for an IC regulator. All the IC options come sorted and stored in the kit with the Analog Devices part number clearly printed on each antistatic zip-top bag.

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.

Product Details

In order to get the correct unpopulated evaluation board with an appropriate Bill of Materials and Schematic, you need to use the button for "Request Evaluation Board" from within the design tool. Make sure the design tool is in a state that matches your desired power requirements.

This will create a template email that will request from us the proper blank evaluation board for that ADI part and your application's power parameters.


Note: Some parts have multiple blank boards for high/low current or for different topologies (Boost, SEPIC, SEPIC-Cuk), while other blank boards support multiple ADI parts. This is why it is important to run the design tool with your parameters before making your email request from the tool.

EVAL-AD7928 Circuit Diagram

Product Details

The EVAL-AD7928SDZ is a full featured evaluation board that allows the user to easily evaluate all the features of the AD7928 analog-to-digital converter (ADC). The evaluation board can be controlled by the

EVAL-SDP-CB1Z SDP board via a 120-way SDP connector (J102). The SDP board allows the evaluation board to be controlled through the USB port of a PC using the AD7928 evaluation software, which is available for download from the product page or from the installer CD included in the evaluation board kit.

On-board components include the following:
  • ADP1613: 20 V, 2 A, step up, dc-to-dc regulator
  • ADP7104ARDZ-5.0: 5 V, low noise LDO
  • AD780: high precision, band gap voltage reference
  • ADG3308: bidirectional logic level translator
  • AD8022: dual high speed, low noise operational amplifier
  • AD8066: dual FastFET™, low noise operational amplifier
  • ADA4000-2: dual low cost, precision JFET input operational amplifier
  • ADM1185: quad voltage monitor and sequencer
  • ADP3303: high accuracy anyCAP®, 200 mA, low dropout linear regulator


Evaluation Kit Contents
EVAL-AD7928SDZ evaluation board
Evaluation software CD for the AD7928
Mains power supply adapter
Screw/nut kit

Additional Equipment Needed
EVAL-SDP-CB1Z system demonstration platform
PC running Windows Vista or Windows 7 with USB 2.0 port
Signal source
SMB cables
USB cable


Online Resources

Documents Needed
AD7928 data sheet
EVAL-AD7928SDZ user guide

Required Software
AD7928 evaluation software
Design and Integration Files
Schematics, layout files, bill of materials

Tools & Simulations

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Design Tools

Design Resources

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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.

ADP7104 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

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Reviews

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Overview

5 Reviews
5 out of 5 (100%) customers recommend this product.
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Most Helpful Review

by Anonymous
The features that I was looking for were already present in this part. The app notes that came with it were excellent as well.

Most Recent Review

by kur
High accurate, good maximum output current and adjustable voltage output is best sides of the product.

All Reviews

by kur, 12 Feb 15
ADP7104
High accurate, good maximum output current and adjustable voltage output is best sides of the product.
Was this Helpful?Helpful(0)
by Very good, 20 Feb 14
The product function is perfect
Fengyun function for the regulator is already possess.
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by Juanra, 9 Jul 13
Good and flexible product
I'm very satisfied with the range of the product and versatility.
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by Anonymous, 14 Mar 13
Good overall and esp good for low noise and high voltage fixed output
There are very few regulators that have ultra-low output impedance, which is very important for audio applications. Dropout is less important so I hope to find regulators with mosfet pass elements.
Was this Helpful?Helpful(0)
by Anonymous, 9 Nov 12
Meets all expectations, and is very easy to implement in a new design.
The features that I was looking for were already present in this part. The app notes that came with it were excellent as well.
Was this Helpful?Helpful(1)

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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.


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Evaluation Boards Pricing displayed is based on 1-piece.
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.