ADR4525

PRODUCTION

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

Data Sheet (Rev. F) Product Selection Table
Part Models
9
1ku List Price
Starting From $2.89
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Part Details

  • 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
ADR4525
Ultra-Low-Noise, High-Accuracy 2.5V Voltage Reference
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 Pin Configuration ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 Pin Configuration ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 Pin Configuration ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550 Pin Configuration
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Documentation

Data Sheet 1

Application Note 3

Technical Articles 1

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Hardware Ecosystem

Parts Product Life Cycle Description
Positive Linear Regulators (LDO) 1
LT3040
RECOMMENDED FOR NEW DESIGNS 20V, 200mA, Ultralow Noise, Ultrahigh PSRR Precision DAC/Reference Buffer
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • ADR4525

Signal Chain Designer - BETA

Signal Chain Designer is a web-based tool designed to create and simulate complex precision signal chains. See your circuit’s performance before you commit to your PCB: transfer function, noise, power consumption, input range, and DC error. Quickly experiment with different parts and architectures. Signal chains can be exported to LTspice for further analysis.

Open Tool
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.

Evaluation Kits

eval board
schematic 1
EVAL-AD5676RARDZ

Evaluation Board for the AD5676R WLCSP

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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 Details

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.

eval board
schematic 2
schematic 3
schematic 4
schematic 5
AD-PAARRAY3552R-SL

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

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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 Details

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
eval-image-unavailable
AD-PAARRAY3552R-SL
RF Front-end GaN Power Amplifier Biasing, Protection, and Control Reference Design
AD-PAARRAY3552R-SL Block Diagram AD-PAARRAY3552R-SL Board Photo Angle View AD-PAARRAY3552R-SL Board Photo Top View AD-PAARRAY3552R-SL Board Photo Bottom View

Reference Designs

Figure 1. CN0585 Simplified Block Diagram
Figure 1. CN0585 Simplified Block Diagram
EVAL-CN0585-FMCZ Angle View
EVAL-CN0585-FMCZ Bottom View
EVAL-CN0585-FMCZ Top View
CN0585 Circuits from the lab

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

View Detailed Reference Design

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
Dual-Channel Colorimeter
Dual-Channel Colorimeter
CN0312 Circuits from the lab

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

View Detailed Reference Design

Features and Benefits

  • Dual channel RGB colorimeter
  • High sensitivity low noise transimpedance amplifier
  • Programmable gain TIA
Figure 1. CN0554 Simplified Block Diagram
Figure 1. CN0554 Simplified Block Diagram
EVAL-CN0554-RPIZ
EVAL-CN0554-RPIZ - Top View
EVAL-CN0554-RPIZ - Bottom View
CN0554 Circuits from the lab

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

View Detailed Reference Design

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

Part Used

Resources

Design & Integration Tools

Videos

  • lazy blur
    VIDEO · 2023-02-17 01:00
    CN0554: 10V Analog Input and 15V Analog Output for Raspberry Pi
Femtoampere Measurement System Functional Diagram
Femtoampere Measurement System Functional Diagram
EVAL-CN0407-SDPZ (Without Shield Installed)
CN0407 Circuits from the lab

Ultrahigh Sensitivity Femtoampere Measurement Platform

View Detailed Reference Design

Features and Benefits

  • Femtoampere measurements
  • Electrometer grade input amplifier
  • 20fA maximum input bias current @ 85°C
  • 24-bit sigma delta ADC

Part Used

Design & Integration Tools

Videos

  • lazy blur
    VIDEO · 2014-07-24 01:25
    sample_iTunes
  • lazy blur
    VIDEO · 2017-04-07 01:20
    Valeria
  • lazy blur
    VIDEO · 2014-02-11 01:44
    AnalogDevices-F04
±1 LSB Linear 16-Bit LED Current Source Driver
±1 LSB Linear 16-Bit LED Current Source Driver
EVAL-CN0370-PMDZ Evaluation Board
EVAL-CN0370-PMDZ Evaluation Board - Top View
EVAL-CN0370-PMDZ Evaluation Board - Bottom View
CN0370 Circuits from the lab

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

View Detailed Reference Design

Features and Benefits

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

Basic Single-Ended, Low Voltage, Low Power, 16-Bit, 100 kSPS ADC Solution
Basic Single-Ended, Low Voltage, Low Power, 16-Bit, 100 kSPS ADC Solution
CN0255 Circuits from the lab

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

View Detailed Reference Design

Features and Benefits

  • 16-bit, 100KSPS Data Acquisiton
  • Single Supply
  • 8mW Total Power
CN0585
Quad Channel, Low Latency, Data Acquisition and Signal Generation Module
Figure 1. CN0585 Simplified Block Diagram
EVAL-CN0585-FMCZ Angle View
EVAL-CN0585-FMCZ Bottom View
EVAL-CN0585-FMCZ Top View
CN0312
Dual-Channel Colorimeter with Programmable Gain Transimpedance Amplifiers and Synchronous Detectors
Dual-Channel Colorimeter
CN0554
±10 V Analog Input and ±15 V Analog Output for Raspberry Pi Platforms
Figure 1. CN0554 Simplified Block Diagram
EVAL-CN0554-RPIZ
EVAL-CN0554-RPIZ - Top View
EVAL-CN0554-RPIZ - Bottom View
CN0407
Ultrahigh Sensitivity Femtoampere Measurement Platform
Femtoampere Measurement System Functional Diagram
EVAL-CN0407-SDPZ (Without Shield Installed)
CN0370
16-Bit, Single-Supply LED Current Driver with Less than ±1 LSB Integral and Differential Nonlinearity
±1 LSB Linear 16-Bit LED Current Source Driver
EVAL-CN0370-PMDZ Evaluation Board
EVAL-CN0370-PMDZ Evaluation Board - Top View
EVAL-CN0370-PMDZ Evaluation Board - Bottom View
CN0255
16-Bit, 100 kSPS, Single Supply, Low Power Data Acquisition System
Basic Single-Ended, Low Voltage, Low Power, 16-Bit, 100 kSPS ADC Solution

Latest Discussions

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Zedboard cannot recognize EVAL-AD3552RFMC1Z
27 Weeks Ago
RE: PPM Difficulty
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Voltage hysteresis measurement procedure
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