ADA4945-1

RECOMMENDED FOR NEW DESIGNS

High Speed, ±0.1 µV/˚C Offset Drift, Fully Differential ADC Driver

Data Sheet (Rev. A) Product Selection Table
Part Models
3
1ku List Price
Starting From $2.25
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Part Details

  • Broad power supply range: 3 V to 10 V
  • Wide input common-mode voltage range: −VS to +VS − 1.3 V
  • Rail-to-rail output
  • Fully specified dual power mode operation
    • 4 mA full power mode (145 MHz)
    • 1.4 mA low power mode (80 MHz)
  • Full power mode
    • Low harmonic distortion
    • −133 dBc HD2 and −140 dBc HD3 at 1 kHz
    • −133 dBc HD2 and −116 dBc HD3 at 100 kHz
  • Fast settling time
    • 18-bit: 100 ns
    • 16-bit: 50 ns
  • Input voltage noise: 2.0 nV/√Hz, f = 100 kHz
  • ±115 μV maximum offset voltage from −40°C to +125°C
  • Adjustable output clamps for ADC input protection
ADA4945-1
High Speed, ±0.1 µV/˚C Offset Drift, Fully Differential ADC Driver
ADA4945-1 Functional Block Diagram ADA4945-1 Pin Configuration
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Documentation

Data Sheet 1

User Guide 3

Application Note 2

Technical Articles 2

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Hardware Ecosystem
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Modify Design LTspice Simulation
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • ADA4945-HP
  • ADA4945-LP

Precision ADC Driver Tool

The Precision ADC Driver Tool is a web application that simulates the performance of precision ADC and driver combinations. Potential issues with driver selection, kickback settling, and distortion are flagged, and design tradeoffs can be quickly evaluated. Simulations and calculations include system noise, distortion, and settling of the ADC input

Open Tool

ADI DiffAmpCalc™

ADI's new ADI DiffAmpCalc™ is a free, downloadable calculator for designing differential amplifier circuits. The tool is easy to use and features an interactive user interface to quickly get you up and running.

Open Tool

SPICE Model 1

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
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EVAL-ADMX1002

Ultra-low Distortion Signal Generator Measurement Module

Buy Now View Details

Features and Benefits

  • Ultra-low distortion, high-resolution source
    • DC, 50Hz to 40kHz Frequency Range
    • Proprietary digital pre-distortion (DPD) algorithm
    • –130dBc THD @ 1kHz (typ.)
    • Arbitrary waveform generation (AWG) with on-board pattern memory
    • Differential (balanced) output up to 3.6VRMS
  • Fast pattern switching between multiple stored waveforms
  • Small form-factor (60mm x 40mm)
  • Low power, 1W typ. (quiescent)
  • SPI interface for integration into test and measurement systems

Product Details

The ADMX1002 is an ultra-low distortion sinewave and high-resolution arbitrary waveform generator. This high-performance module demonstrates a proprietary digital pre-distortion algorithm that reduces signal distortion below levels that can be achieved with high-performance digital-to-analog converters (DAC) and amplifiers alone. Its differential output can be set to common-mode levels often required to test high-performance analog-to-digital converters (ADC), audio codecs, and other audio ICs and systems. With an easy-to-use SPI interface and small-form factor, the ADMX1002 can be easily embedded into test systems, or simply used on the bench for measurement and characterization.

APPLICATIONS

  • High-end audio test
  • Analog-to-digital converter characterization and test
  • Sensor and transducer test
  • Frequency response and network analysis
  • ATE

eval board
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EVAL-AD4630-24

AD4630-24 SAR ADC Evaluation Board

Buy Now View Details

Features and Benefits

  • On-board voltage reference, clock source, and ADC drivers
  • Versatile analog signal conditioning circuitry
  • FMC-LPC system board connector
  • ACE PC software for configuration and data analysis (time and frequency domain)
  • Compatible with other off-the-shelf controller boards

Product Details

The EVAL-AD4630-24FMCZ evaluation board enables quick and easy evaluation of the AD4630 family of 24-bit precision successive approximation register (SAR) analog-to-digital converters (ADCs).

The AD4630-24 is a low power, 24-bit, 2-channel, 24-bit precision SAR ADC that supports up to 2 MSPS per channel. The evaluation board demonstrates the performance of the AD4630-24 and provides a configurable analog front end (AFE) for a variety of system applications.

The EVAL-AD4630-24FMCZ evaluation board is designed for use with the Digilent ZedBoard™. The ZedBoard is used to control data capture and buffering. The evaluation board connects to the ZedBoard board via a field-programmable gate array (FPGA) mezzanine card (FMC) low pin count (LPC) connector. The ZedBoard hosts a Xilinx Zynq7000 SoC, which has two processor cores and programmable FPGA fabric. The ZedBoard connects to the PC through USB.

APPLICATIONS

  • Automatic test equipment
  • Digital control loops
  • Medical instrumentation
  • Seismology
  • Semiconductor manufacturing
  • Scientific instrumentation

eval board
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EVAL-AD4030-24

AD4030-24 Evaluation Board, Precision Single Channel 24-Bit SAR ADC

Buy Now View Details

Features and Benefits

  • On-board voltage reference, clock source, and ADC drivers
  • Versatile analog signal conditioning circuitry
  • FMC-LPC system board connector
  • ACE PC software for configuration and data analysis (time and frequency domain)
  • Compatible with other off-the-shelf controller boards

Product Details

The EVAL-AD4030-24FMCZ evaluation board enables quick and easy evaluation of the AD4030 family of 24-bit precision successive approximation register (SAR) analog-to-digital converters (ADCs).

The AD4030-24 is a low power, 24-bit precision SAR ADC that supports up to 2 MSPS. The evaluation board demonstrates the performance of the AD4030-24 and provides a configurable analog front end (AFE) for a variety of system applications.

The EVAL-AD4030-24FMCZ evaluation board is designed for use with the Digilent ZedBoard. The ZedBoard is used to control data capture and buffering. The evaluation board connects to the ZedBoard board via a field-programmable gate array (FPGA) mezzanine card (FMC) low pin count (LPC) connector. The ZedBoard hosts a Xilinx Zynq7000 SoC, which has two processor cores and programmable FPGA fabric. The ZedBoard connects to the PC through USB.

The evaluation board includes:

  • A high precision buffered band gap 5 volt reference (LTC6655).
  • An analog front end (AFE) that provides signal conditioning and drive for the AD4030-24. The AFE can be configured to use either the ADA4896-2 in a dual buffer configuration, or the ADA4945-1, a fully differential amplifier.
  • An optional 100 MHz clock source that provides a reference clock for the FPGA and ADC.
  • Full power supply solution that provides all the necessary voltage rails from a 12 volt supply that is provided from the ZedBoard through the FMC connector.

Full descriptions of these products are available in their respective data sheets, which should be consulted when using the evaluation board.

APPLICATIONS

  • Automatic test equipment
  • Digital control loops
  • Medical instrumentation
  • Seismology
  • Semiconductor manufacturing
  • Scientific instrumentation

eval board
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EVAL-ADA4945-1

ADA4945-1 Evaluation Board

Buy Now View Details

Features and Benefits

  • Enables quick breadboarding/prototyping
  • User defined circuit configuration
  • Dual Purpose
    • Standalone ADA4945-1 evaluation board
    • Amplifier mezzanine card for ADC evaluation boards
  • Compatible with 10-lead PulSAR evaluation board

Product Details

The Analog Devices, Inc., ADA4945-1 evaluation board is used to evaluate the performance of the ADA4945-1 fully differential amplifier. The board can be used as either a standalone evaluation board for general purpose differential amplifier evaluation or as an amplifier mezzanine card for specified ADCs. When configured as a mezzanine card the board is easily mounted atop compatible ADC evaluation boards via the 7-pin headers Jl & J2. This usage enables quick and easy evaluation of multiple amplifier/ADC combinations.

The evaluation board can be configured to accept either a single-ended or differential input signal.

The board utilizes several two-pin or three-pin headers to control various features of the ADA4945-1. Headers allow the user to easily set the ADA4945-1 high and low output clamp levels, set the output common-mode voltage, choose high or low power mode, and set the digital ground level.

Optimized power and ground planes ensure low noise and high speed operation. Component placement and power supply bypassing are optimized for maximum circuit flexibility and performance. The evaluation board accepts 0402 or 0603 surface mount technology (SMT) components, 0805 bypass capacitors, and 2.54 mm headers.

eval board
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EVAL-ADMX1001

Ultra-low Distortion Signal Generator Measurement Module with Fully Differential Input Acquisition Channel

Buy Now View Details

Features and Benefits

  • Ultra-low distortion, high-resolution source
    • DC, 50Hz to 40kHz Frequency Range
    • Proprietary digital pre-distortion (DPD) algorithm
    • –130dBc THD @ 1kHz (typ.)
    • Arbitrary waveform generation (AWG) with on-board pattern memory
    • Differential (balanced) output up to 3.5VRMS
    • Fast pattern switching between multiple stored waveforms
  • Fully Differential input Acquisition Channel
  • Small form-factor (60mm x 40mm)
  • Low power, 1W typ. (quiescent)
  • SPI interface for integration into test and measurement systems

Product Details

The ADMX1001 is an ultra-low distortion sinewave and high-resolution arbitrary waveform generator with an acquisition channel. This high-performance module demonstrates a proprietary digital pre-distortion algorithm that reduces signal distortion below levels that can be achieved with high-performance digital-to-analog converters (DAC) and amplifiers alone. Its differential output can be set to common-mode levels often required to test high-performance analog-to-digital converters (ADC), audio codecs, and other audio ICs and systems. The signal generator and the acquisition channel can be individually controlled using separate, easy to use, SPI interfaces - combined with the module's small-form factor, the ADMX1001 can be easily embedded into test systems, or simply used on the bench for measurement and characterization.

APPLICATIONS

  • High-end audio test
  • Analog-to-digital converter characterization and test
  • Sensor and transducer test
  • Frequency response and network analysis
  • ATE
EVAL-ADMX1002
Ultra-low Distortion Signal Generator Measurement Module
EVAL-ADMX100X-FMCZKIT - Angle View EVAL-ADMX100X-FMCZKIT - Top View ADMX1002 - Angle View ADMX1002 - Top View ADMX1002 - Bottom View
EVAL-AD4630-24
AD4630-24 SAR ADC Evaluation Board
EVAL-AD4630-24FMCZ Evaluation Board EVAL-AD4630-24FMCZ Evaluation Board - Top View EVAL-AD4630-24FMCZ Evaluation Board - Bottom View
EVAL-AD4030-24
AD4030-24 Evaluation Board, Precision Single Channel 24-Bit SAR ADC
EVAL-AD4030-24 Evaluation Board EVAL-AD4030-24 Evaluation Board - Top View EVAL-AD4030-24 Evaluation Board - Bottom View
EVAL-ADA4945-1
ADA4945-1 Evaluation Board
eval-image-unavailable
EVAL-ADMX1001
Ultra-low Distortion Signal Generator Measurement Module with Fully Differential Input Acquisition Channel
ADMX1001 - Top View ADMX1001 - Bottom View ADMX1001 - Angle View ADMX1001FMCZ - Top View ADMX1001FMCZ - Bottom View ADMX1001FMCZ - Angle View EVAL-ADMX100X-FMCZKIT - Angle View EVAL-ADMX100X-FMCZKIT - Top View

Reference Designs

Simplified Circuit Diagram
Simplified Circuit Diagram
CN0535 Circuits from the lab

High Performance, Alias Free Measurement Platform for Flexible Data Acquisition System

View Detailed Reference Design

Features and Benefits

  • Alias free Measurement System
  • Optimized for AC & DC Performance
  • Wide Analog Input (+/-12V)
  • FMC Compatible Form Factor

Part Used

Resources

Design & Integration Tools

Videos

  • lazy blur
    VIDEO · 2021-11-16 06:43
    CN0535 Unboxing and Getting Started Video
  • lazy blur
    VIDEO · 2021-11-04 04:42
    CN0535 Mbed Example Program Setup
Condition-Based Monitoring Signal Chain for an IEPE Piezoelectric Vibration Sensor
Condition-Based Monitoring Signal Chain for an IEPE Piezoelectric Vibration Sensor
EVAL-CN0540 24-Bit Data Acquisition System for IEPE Sensors
EVAL-CN0540 24-Bit Data Acquisition System for IEPE Sensors - Top View
EVAL-CN0540 24-Bit Data Acquisition System for IEPE Sensors - Bottom View
CN0540 Circuits from the lab

24-Bit Data Acquisition System for IEPE Sensors

View Detailed Reference Design

Features and Benefits

  • IEPE compatible data acquisition system
  • Piezo and MEMs sensors
  • 54 kHz analog input bandwidth
  • Arduino form factor compatible

Part Used

Resources

Design & Integration Tools

Videos

  • lazy blur
    VIDEO · 2022-09-21 01:06
    Easily Connect Sensors with ADI's Robust Industrial Signal Chains
  • lazy blur
    VIDEO · 2021-01-29 02:43
    CN0549 - CbM Development Platform
Figure 1. CN0577 Simplified Block Diagram
Figure 1. CN0577 Simplified Block Diagram
EVAL-CN0577-FMCZ
EVAL-CN0577-FMCZ - Top View
EVAL-CN0577-FMCZ - Bottom View
CN0577 Circuits from the lab

Analog Front End and Digital Interface for Serial LVDS SAR ADCs

View Detailed Reference Design

Features and Benefits

  • 18-Bit Resolution, 15 MSPS Data Acquisition System
  • Arbitrary Voltage Inputs Supported
  • All Clocking and Power Requirements are Onboard
  • FMC Connector for FPGA Interfacing
Figure 1. CN0579 Simplified Block Diagram
Figure 1. CN0579 Simplified Block Diagram
EVAL-CN0579-ARDZ Evaluation Board - Angle View
EVAL-CN0579-ARDZ Evaluation Board - Top View
CN0579 Circuits from the lab

Quad-Channel IEPE Vibration Sensor Measurement System

View Detailed Reference Design

Features and Benefits

  • Quad Channel IEPE-Compatible Vibration Sensor Interface
  • Channel Independent Excitation Source and Sensor Bias Removal Circuitry
  • Analog Overvoltage and Undervoltage Protection
  • Sensor Frequency Response from DC up to 54 kHz
  • Synchronized, Full Bandwidth Data Measurement and Capture
Figure 1. CN0582 Simplified System Block Diagram
Figure 1. CN0582 Simplified System Block Diagram
EVAL-CN0582-USBZ
EVAL-CN0582-USBZ - Top View
EVAL-CN0582-USBZ - Bottom View
CN0582 Circuits from the lab

USB 3.0 Quad-Channel IEPE Vibration Sensor Measurement System

View Detailed Reference Design

Features and Benefits

  • 4-Channels of Analog Input
  • IEPE, 4-20mA Sensor Compatible
  • Frequency Generator Output

Part Used

Design & Integration Tools

Videos

  • lazy blur
    VIDEO · 2023-03-07 01:00
    CN0582: USB 3.0 Quad-Channel IEPE Vibration Sensor Measurement System​
CN0535
High Performance, Alias Free Measurement Platform for Flexible Data Acquisition System
Simplified Circuit Diagram
CN0540
24-Bit Data Acquisition System for IEPE Sensors
Condition-Based Monitoring Signal Chain for an IEPE Piezoelectric Vibration Sensor
EVAL-CN0540 24-Bit Data Acquisition System for IEPE Sensors
EVAL-CN0540 24-Bit Data Acquisition System for IEPE Sensors - Top View
EVAL-CN0540 24-Bit Data Acquisition System for IEPE Sensors - Bottom View
CN0577
Analog Front End and Digital Interface for Serial LVDS SAR ADCs
Figure 1. CN0577 Simplified Block Diagram
EVAL-CN0577-FMCZ
EVAL-CN0577-FMCZ - Top View
EVAL-CN0577-FMCZ - Bottom View
CN0579
Quad-Channel IEPE Vibration Sensor Measurement System
Figure 1. CN0579 Simplified Block Diagram
EVAL-CN0579-ARDZ Evaluation Board - Angle View
EVAL-CN0579-ARDZ Evaluation Board - Top View
CN0582
USB 3.0 Quad-Channel IEPE Vibration Sensor Measurement System
Figure 1. CN0582 Simplified System Block Diagram
EVAL-CN0582-USBZ
EVAL-CN0582-USBZ - Top View
EVAL-CN0582-USBZ - Bottom View

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