ADP5070
Info : RECOMMENDED FOR NEW DESIGNS
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ADP5070

1 A/0.6 A, DC-to-DC Switching Regulator with Independent Positive and Negative Outputs

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 4
1ku List Price Starting From $2.34
Features
  • Wide input supply voltage range: 2.85 V to 15 V
  • Generates well regulated, independently resistor programmable VPOS and VNEG outputs
  • Boost regulator to generate VPOS output
    • Adjustable positive output to 39 V
    • Integrated 1.0 A main switch
    • Optional single-ended primary-inductor converter (SEPIC) configuration for automatic step-up/step-down
  • Inverting regulator to generate VNEG output
    • Adjustable negative output to VIN − 39 V
    • Integrated 0.6 A main switch
  • True shutdown for both positive and negative outputs
  • 1.2 MHz/2.4 MHz switching frequency with optional external frequency synchronization from 1.0 MHz to 2.6 MHz
  • Resistor programmable soft start timer
  • Slew rate control for lower system noise
  • Individual precision enable and flexible start-up sequence control for symmetric start, VPOS first, or VNEG first
  • Out-of-phase operation
  • UVLO, OCP, OVP, and TSD protection
  • 4 mm × 4 mm, 20-lead LFCSP and 20-lead TSSOP
  • −40°C to +125°C junction temperature range
  • Supported by the ADIsimPower tool set
Additional Details
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The ADP5070 is a dual high performance dc-to-dc regulator that generates independently regulated positive and negative rails.

The input voltage range of 2.85 V to 15 V supports a wide variety of applications. The integrated main switch in both regulators enables generation of an adjustable positive output voltage up to +39 V and a negative output voltage down to −39 V below input voltage.

The ADP5070 operates at a pin selected 1.2 MHz/2.4 MHz switching frequency. The ADP5070 can synchronize with an external oscillator from 1.0 MHz to 2.6 MHz to ease noise filtering in sensitive applications. Both regulators implement programmable slew rate control circuitry for the MOSFET driver stage to reduce electromagnetic interference (EMI).

Flexible start-up sequencing is provided with the options of manual enable, simultaneous mode, positive supply first, and negative supply first.

The ADP5070 includes a fixed internal or resistor programmable soft start timer to prevent inrush current at power-up. During shutdown, both regulators completely disconnect the loads from the input supply to provide a true shutdown.

Other key safety features in the ADP5070 include overcurrent protection (OCP), overvoltage protection (OVP), thermal shutdown (TSD), and input undervoltage lockout (UVLO).

The ADP5070 is available in a 20-lead LFCSP or in a 20-lead TSSOP and is rated for a −40°C to +125°C junction temperature range.

Applications

  • Bipolar amplifiers, ADCs, DACs and multiplexers
  • Charge-coupled device (CCD) bias supply
  • Optical module supply
  • RF power amplifier (PA) bias
Part Models 4
1ku List Price Starting From $2.34

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADP5070ACPZ
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ADP5070ACPZ-R7
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ADP5070AREZ
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ADP5070AREZ-R7
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

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SCP-ADP5070-EVALZ

ADP5070 Signal Chain Evaluation Board | Dual Boost/Inverting Converter

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SCP-ADP5070-EVALZ

ADP5070 Signal Chain Evaluation Board | Dual Boost/Inverting Converter

ADP5070 Signal Chain Evaluation Board | Dual Boost/Inverting Converter

Product Detail

Demonstration circuit SCP-ADP5070-EVALZ is a dual out-put DC-DC converter designed to create a dual polarity regulated voltage for powering several signal chains. The positive regulator provides 15V/1A of output while the negative regulator delivers –15V/300mA.

Like all boards in the Signal Chain Power series, this board is designed to be easily plugged into other SCP boards to form a complete signal chain power system, enabling fast evaluation of low power signal chains. To evaluate this board, some universal SCP hardware is required, namely:

  • SCP-INPUT-EVALZ
  • SCP-OUTPUT-EVALZ
  • SCP-1X5BKOUT-EVALZ
  • SCP-THRUBRD-EVALZ
  • SCP-FILTER-EVALZ
  • SCP-1X2BKOUT-EVALZ
  • SCP-5X1-EVALZ

 

To properly evaluate SCP series demo boards, you will need the SCP Configurator companion software. SCP Configurator can help you choose the right board and topology for your design.

Note that the Demo Manual does not cover details important to the operation and configuration regarding the ADP5070. Please refer to the ADP5070 datasheet for a complete description of the part.

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EVAL-ADP5070

ADP5070/ADP5071 Evaluation Board

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EVAL-ADP5070

ADP5070/ADP5071 Evaluation Board

ADP5070/ADP5071 Evaluation Board

Features and Benefits

  • Input voltage range: 3V to 5.5V
  • Output Voltage: +/- 15V
  • Output Voltage With LDOs: +/-12V

Product Detail

The ADP5070CP-EVALZ and ADP5071CP-EVALZ evaluation board are used to demonstrate the functionality of the ADP5070 and ADP5071 dc-to-dc converters, respectively.

Simple device measurements, such as line regulation, load regulation and efficiency, can be evaluated with the board. Device features, including selectable operating frequency, soft start, sequencing and slew rate control, may be demonstrated. The ADP7142 and ADP7182 LDOs are also available on the board as an option for enhanced low noise output.

For more details about dc-to-dc converters, refer to the ADP5070 and ADP5071 datasheets. For further information on the LDOs, refer to the ADP7142 and ADP7182 datasheet.

Additional Equipment Needed

  • DC power supply
  • Multimeters for voltage and current measurements
  • Electronic or resistive loads

Evaluation Kit Contents

  • ADP5070CP-EVALZ or ADP5071CP-EVALZ evaluation board
Tools & Simulations

Tools & Simulations 2

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.

Reference Designs

Reference Designs 2

CN0513 Board

20-Bit, 1.8 MSPS, ±2.5 ppm INL, Low Drift, High Accuracy Data Acquisition Solution

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CN0513

20-Bit, 1.8 MSPS, ±2.5 ppm INL, Low Drift, High Accuracy Data Acquisition Solution

CN0513

Circuits from the lab

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20-Bit, 1.8 MSPS, ±2.5 ppm INL, Low Drift, High Accuracy Data Acquisition Solution

Features and Benefits

  • Data acquisition solution fully characterized over 0°C to 70°C
  • Guaranteed 20-bit no missing codes
  • INL: ±2 ppm, DNL: ±0.25 ppm
  • Throughput: 1.8 MSPS
  • Offset error drift: ±3.5 ppm/°C; gain error drift: ±6 ppm/°C
  • SNR: 98 dB at G = 1, 92 dB at G = 10, fIN = 1 kHz
  • THD: −120 dB at G = 1, −116 dB at G = 10, fIN = 1 kHz
  • Oversampled dynamic range: 102 dB at 900 kSPS, OSR = 2
  • Software programmable bipolar input ranges (±1 V to ±10 V)
    • Allows single-ended and differential signals
  • CMRR: 92 dB typical
  • GΩ input impedance allows direct interface with sensors
  • Ease of use features reduce system power and complexity
  • ADC Input overvoltage clamp protection sinks up to 50 mA
  • On-board 5 V reference and buffer
  • First conversion accurate, no latency/pipeline delay
  • Fast conversion time allows low SPI clock rates
  • SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface
View Detailed Reference Design external link

Design & Integration Tools

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Isolated Multichannel Data Acquisition Simplified Circuit

Isolated, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial Level Signals

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CN0385

Isolated, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial Level Signals

CN0385

Circuits from the lab

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Isolated, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial Level Signals

Features and Benefits

  • Multichannel Isolated Data Acquisition System
  • Industrial Signal Levels
  • 18-bit, 2MSPS Conversion
  • 750kHz Channel Switching Rate

View Detailed Reference Design external link

Design & Integration Tools

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