ADR4525
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ADR4525

Ultra-Low-Noise, High-Accuracy 2.5V Voltage Reference

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 9
1ku List Price Starting From $2.89
Features
  • Maximum temperature coefficient (TCVOUT):
    • 0.8 ppm/°C (D grade 0°C to 70°C)
    • 1 ppm/°C (C grade 0°C to 70°C)
    • 2 ppm/°C (B grade −40°C to +125°C)
    • 4 ppm/°C (A grade −40°C to +125°C)
  • Output noise (0.1 Hz to 10 Hz):
  • 1 μV p-p at VOUT of 2.048 V typical
  • Initial output voltage error:
    • B, C, D grade: ±0.02% (maximum)
  • Input voltage range: 3 V to 15 V
  • Operating temperature:
    • A grade and B grade: −40°C to +125°C
    • C grade and D grade: 0°C to +70°C
  • Output current: +10 mA source/−10 mA sink
  • Low quiescent current: 950 μA (maximum)
  • Low dropout voltage: 300 mV at 2 mA (VOUT ≥ 3 V)
  • 8-lead SOIC package and LCC package
  • AEC-Q100 qualified for automotive applications
  • Long-term drift: 8 ppm typical at 4500 hours
Additional Details
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The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 devices are high precision, low power, low noise voltage references featuring ±0.02% B, C, and D grade maximum initial error, excellent temperature stability, and low output noise.

This family of voltage references uses an innovative core topology to achieve high accuracy while offering industry-leading temperature stability and noise performance. The low, thermally induced output voltage hysteresis and low long-term output voltage drift of the devices also improve system accuracy over time and temperature variations.

A maximum operating current of 950 μA and a maximum low dropout voltage of 300 mV allow the devices to function very well in portable equipment.

The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 series of references are each provided in an 8-lead SOIC and are available in a wide range of output voltages, all of which are specified over the extended industrial temperature range of −40°C to +125°C.

The ADR4525, ADR4540, and ADR4550 are also available in D, which are in 8 lead LCC package, and C grade with a temperature range of 0°C to 70°C. The ADR4525W, available in an 8‑lead SOIC package, is qualified for automotive applications.

APPLICATIONS

  • Precision data acquisition systems
  • High resolution data converters
  • High precision measurement devices
  • Industrial instrumentation
  • Medical devices
  • Automotive battery monitoring
Part Models 9
1ku List Price Starting From $2.89

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Documentation

Documentation

Video

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADR4525ARZ
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ADR4525ARZ-R7
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ADR4525BRZ
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ADR4525BRZ-R7
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ADR4525CRZ
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ADR4525CRZ-R7
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ADR4525DEZ
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ADR4525DEZ-R7
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ADR4525WBRZ-R7
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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

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AD-PAARRAY3552R-SL

RF Front-end GaN Power Amplifier Biasing, Protection, and Control Reference Design

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AD-PAARRAY3552R-SL

RF Front-end GaN Power Amplifier Biasing, Protection, and Control Reference Design

RF Front-end GaN Power Amplifier Biasing, Protection, and Control Reference Design

Features and Benefits

  • Designed to cover full Tx signal chains with integrated MCU and user-friendly GUI for faster and easier integration
  • Supports fault event protection - overvoltage (OV), overcurrent (OC), and overtemperature (OT)
  • Supports ultrafast sub-µs GaN gate voltage switching ~ (<1 µs)
  • Supports ultrafast (<10 µs) fault event protection from detection up to GaN gate pinch-off
  • Wide range of gate bias voltages from -10 V to +10 V
  • Configurable power-up and power-down sequence

Product Detail

The AD-PAARRAY3552R-SL reference design provides control, protection, and proper biasing sequence for GaN power amplifier (PA) arrays. The design incorporates the AD3553R high-speed, dual-channel, 16-bit DAC to support the ultrafast sub-µs voltage settling time of GaN gates.

Key fault events, including overvoltage, overcurrent, and overtemperature, are effectively managed by the LTC7000, a static switch driver responsible for system fault protection.

The on-board MAX32666 ultralow-power ARM® Cortex®-M4 microprocessor provides essential debug and programming features for a comprehensive software development experience with the system. The system's firmware is built on ADI's open-source no-OS framework and includes a user-friendly graphical interface (GUI) for evaluation. Updates are easily applied through an SWD UART bootloader, streamlining prototyping.

The system can be powered by an external +48 V supply, requiring high current capabilities.

APPLICATIONS

  • 5G massive MIMOs
  • Macro base stations
Specifications
Fault Events
Fault Default Limit
Overvoltage +55 V
Overcurrent 3.5 A
Overtemperature 75°C
Output Ports
Port Name No. of ports
GaN gate ports 6
+48 V Gan drain ports 4
+5 V ports 5
Enable ports 2
Power Supply
External +48 V DC at 5 A
Operating Conditions
Temperature Range 45°C to +75°C

EVAL-AD5676RARDZ

Evaluation Board for the AD5676R WLCSP

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EVAL-AD5676RARDZ

Evaluation Board for the AD5676R WLCSP

Evaluation Board for the AD5676R WLCSP

Features and Benefits

  • Full featured evaluation board for the AD5676R WLCSP
  • On-board or external power supply
  • On-board or external voltage reference
  • Arduino® Uno form-factor, mates with SDP-K1
  • PC control via Analysis | Control | Evaluation (ACE) Software

Product Detail

The EVAL-AD5676RARDZ allows users to quickly prototype AD5676R circuits and reduce design time. The AD5676R operates from a single 2.7 V to 5.5 V supply. The AD5676R incorporates an internal 2.5 V reference to give a full-scale output voltage of 2.5 V or 5 V. An ADR4525 is also provided on-board as a 2.5V reference source. A different external reference voltage can be applied via the EXT_REF SMB connector or test pin if needed.

The EVAL-AD5676RARDZ interfaces to the USB port of a PC via a system demonstration platform board (SDP-K1 ). The Analysis | Control | Evaluation (ACE) software is available for download from the EVAL-AD5676RARDZ product page to use with the evaluation board to allow the user to program the AD5676R. A peripheral module interface (PMOD) connection is also available to allow the connection of microcontrollers to the evaluation board without the SDP-K1 board. When a microcontroller is used through the PMOD connection, the SDP-K1 board must be disconnected, and the user is unable to operate the ACE software.

The EVAL-AD5676RARDZ is compatible with the EVAL-SDP-CK1Z (SDP-K1), which should be purchased separately. A typical connection between the EVAL-AD5676RARDZ and the SDP-B controller board is shown in the user guide. For full details, see the AD5676R data sheet, which must be used in conjunction with the user guide when using the EVAL-AD5676RARDZ.

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 6

Figure 1. CN0554 Simplified Block Diagram

±10 V Analog Input and ±15 V Analog Output for Raspberry Pi Platforms

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CN0554

±10 V Analog Input and ±15 V Analog Output for Raspberry Pi Platforms

CN0554

Circuits from the lab

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±10 V Analog Input and ±15 V Analog Output for Raspberry Pi Platforms

Features and Benefits

  • 8-Psuedo differential inputs or 16-Single-ended inputs
  • Selectable Input Voltage range, up to ±13 V
  • 16 Single-ended Outputs
  • Up to ±15 V Outputs
  • All Power Rails Derived from the Raspberry Pi
View Detailed Reference Design external link

Design & Integration Tools

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ZIP

3.71 M

Videos

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Feb 17, 2023

01:00

CN0554: 10V Analog Input and 15V Analog Output for Raspberry Pi

Basic Single-Ended, Low Voltage, Low Power, 16-Bit, 100 kSPS ADC Solution

16-Bit, 100 kSPS, Single Supply, Low Power Data Acquisition System

±1 LSB Linear 16-Bit LED Current Source Driver

16-Bit, Single-Supply LED Current Driver with Less than ±1 LSB Integral and Differential Nonlinearity

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CN0370

16-Bit, Single-Supply LED Current Driver with Less than ±1 LSB Integral and Differential Nonlinearity

CN0370

Circuits from the lab

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16-Bit, Single-Supply LED Current Driver with Less than ±1 LSB Integral and Differential Nonlinearity

Features and Benefits

  • Single-Supply LED Current Driver
  • 16-Bit Resolution
  • ±1LSB Integral and Differential Nonlinearity
  • Low Noise

View Detailed Reference Design external link
Femtoampere Measurement System Functional Diagram

Ultrahigh Sensitivity Femtoampere Measurement Platform

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CN0407

Ultrahigh Sensitivity Femtoampere Measurement Platform

CN0407

Circuits from the lab

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Ultrahigh Sensitivity Femtoampere Measurement Platform

Features and Benefits

  • Femtoampere measurements
  • Electrometer grade input amplifier
  • 20fA maximum input bias current @ 85°C
  • 24-bit sigma delta ADC
View Detailed Reference Design external link

Design & Integration Tools

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ZIP

1.96 M

Videos

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Jul 24, 2014

01:25

sample_iTunes

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Apr 07, 2017

01:20

Valeria

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Feb 11, 2014

01:44

AnalogDevices-F04

Dual-Channel Colorimeter

Dual-Channel Colorimeter with Programmable Gain Transimpedance Amplifiers and Synchronous Detectors

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cn0312

Dual-Channel Colorimeter with Programmable Gain Transimpedance Amplifiers and Synchronous Detectors

cn0312

Circuits from the lab

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Dual-Channel Colorimeter with Programmable Gain Transimpedance Amplifiers and Synchronous Detectors

Features and Benefits

  • Dual channel RGB colorimeter
  • High sensitivity low noise transimpedance amplifier
  • Programmable gain TIA
View Detailed Reference Design external link
Figure 1. CN0585 Simplified Block Diagram

Quad Channel, Low Latency, Data Acquisition and Signal Generation Module

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CN0585

Quad Channel, Low Latency, Data Acquisition and Signal Generation Module

CN0585

Circuits from the lab

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Quad Channel, Low Latency, Data Acquisition and Signal Generation Module

Features and Benefits

  • 4 Analog Input Channels with Configurable Voltage Ranges
  • 4 Analog Output Channels with Configurable Voltage Ranges
  • 200 ns Latency between ADC Measurement and DAC Settling
  • Analog Front End Interface Connector
  • Modeling and Simulation Compatible with MATLAB and Python
  • FMC Connector Interface to FPGA
View Detailed Reference Design external link

Design & Integration Tools

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ZIP

32.13 M

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