AD8646
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AD8646

24 MHz Rail-to-Rail Dual Op Amp

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 9
1ku List Price Starting From $0.77
Features
  • Offset voltage: 2.5 mV maximum
  • Single-supply operation: 2.7 V to 5.5 V
  • Low noise: 8 nV/√Hz
  • Wide bandwidth: 24 MHz
  • Slew rate: 11 V/μs
  • Short-circuit output current: 120 mA
  • Qualified for automotive applications
  • No phase reversal
  • Low input bias current: 1 pA
  • Low supply current per amplifier: 2 mA maximum
  • Unity gain stable
Additional Details
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The AD8646 and the AD8647 are the dual, and the AD8648 is the quad, rail-to-rail, input and output, single-supply amplifiers featuring low offset voltage, wide signal bandwidth, low input voltage, and low current noise. The AD8647 also has a low power shutdown function.

The combination of 24 MHz bandwidth, low offset, low noise, and very low input bias current makes these amplifiers useful in a wide variety of applications. Filters, integrators, photodiode amplifiers, and high impedance sensors all benefit from the combination of performance features. AC applications benefit from the wide bandwidth and low distortion. The AD8646/AD8647/AD8648 offer high output drive capability, which is excellent for audio line drivers and other low impedance applications. The AD8646 and AD8648 are available for automotive applications (see the Ordering Guide).

Applications include portable and low powered instrumentation, audio amplification for portable devices, portable phone headsets, barcode scanners, and multipole filters. The ability to swing rail to rail at both the input and output enables designers to buffer CMOS ADCs, DACs, ASICs, and other wide output swing devices in single-supply systems.

Applications

  • Battery-powered instruments
  • Multipole filters
  • ADC front ends
  • Sensors
  • Barcode scanners
  • ASIC input or output amplifiers
  • Audio amplifiers
  • Photodiode amplifiers
  • Datapath/mux/switch control
Part Models 9
1ku List Price Starting From $0.77

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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AD8646WARMZ-R7
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Product Lifecycle

PCN

Mar 22, 2021

- 21_0001

Addition of Amkor Philippines as an Alternate Site for Singulated MSOP and MSOP_EP

May 15, 2012

- 10_0006

Halogen Free Material Change for mini SOIC Products

AD8646ARMZ

PRODUCTION

AD8646ARMZ-REEL

PRODUCTION

AD8646WARMZ-R7

PRODUCTION

AD8646WARMZ-RL

PRODUCTION

Oct 23, 2009

- 09_0153

Jiangsu Changjiang Electronics Technology Co. Ltd. (JCET) and Advanced Semiconductor Engineering (ASE) as additional Assembly Subcontractors for 8L SOIC, 8L MSOP, 16L TSSOP and 8L PDIP.

Jul 20, 2012

- 12_0105

Halogen Free Material Change for Select SOIC Narrow and Wide Body Products Assembled at Amkor

May 23, 2014

- 14_0014

ADI Corporate Obsolescence Notice-January 2014 (Standard Products)

AD8646WARMZ-RL

PRODUCTION

AD8646WARZ-RL

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Mar 22, 2021

- 21_0001

arrow down

Addition of Amkor Philippines as an Alternate Site for Singulated MSOP and MSOP_EP

May 15, 2012

- 10_0006

arrow down

Halogen Free Material Change for mini SOIC Products

AD8646ARMZ

PRODUCTION

AD8646ARMZ-REEL

PRODUCTION

AD8646WARMZ-R7

PRODUCTION

AD8646WARMZ-RL

PRODUCTION

Oct 23, 2009

- 09_0153

arrow down

Jiangsu Changjiang Electronics Technology Co. Ltd. (JCET) and Advanced Semiconductor Engineering (ASE) as additional Assembly Subcontractors for 8L SOIC, 8L MSOP, 16L TSSOP and 8L PDIP.

Jul 20, 2012

- 12_0105

arrow down

Halogen Free Material Change for Select SOIC Narrow and Wide Body Products Assembled at Amkor

May 23, 2014

- 14_0014

arrow down

ADI Corporate Obsolescence Notice-January 2014 (Standard Products)

AD8646WARMZ-RL

PRODUCTION

AD8646WARZ-RL

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

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EVAL-OPAMP-2

EVAL-OPAMP-2 Evaluation Board

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EVAL-OPAMP-2

EVAL-OPAMP-2 Evaluation Board

EVAL-OPAMP-2 Evaluation Board

Product Detail

The universal precision op amp evaluation boards have been designed and optimized for many circuit configurations allowing the users to best suit their applications. These boards are all RoHs compliant. See references below on what board to order by lead count and package.

  • EVAL-PRAOPAMP-2CPZ (dual 8-lead LFCSP) CP-8
  • EVAL-PRAOPAMP-2RMZ (dual 8-lead MSOP) RM-8
  • EVAL-PRAOPAMP-2RZ (dual 8-lead SOIC) R-8

reference details image

FMCMOTCON2

OBSOLETE: AD-FMCMOTCON2-EBZ Evaluation Board

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FMCMOTCON2

OBSOLETE: AD-FMCMOTCON2-EBZ Evaluation Board

OBSOLETE: AD-FMCMOTCON2-EBZ Evaluation Board

Features and Benefits

This evaluation board is obsolete and no longer recommended.


The FMCMOTCON2 evaluation kit enables users to:

  • Model and implement motor control algorithms rapidly for high performance servo systems, incorporating system modelling and design concepts using Mathworks model based design
  • Reduce time needed to move a motor control system from concept to production, by providing a prototyping system to verify the hardware and control algorithms before moving to production stage.

Product Detail

This evaluation board is obsolete and no longer recommended.


The AD-FMCMOTCON2-EBZ is a complete high performance servo system on an FPGA Mezzanine Card (FMC) board, the purpose of which is to provide a complete motor drive system demonstrating efficient and high dynamic control of three phase PMSM and induction motors up to 48V and 20A.

Two motors can be driven at the same time, each motor having its separate power supply. The system incorporates high quality power sources; reliable power, control, and feedback signals isolation; accurate measurement of motor current & voltage signals; high speed interfaces for control signals to allow fast controller response; industrial Ethernet high speed interfaces; single ended Hall, differential Hall, encoder and resolver interfaces; digital position sensors interface; flexible control with a FPGA/SoC interface.

The kit consists of two boards: a controller board and a drive board. An optional AD-DYNO2-EBZ dynamometer can also be purchased through Avnet and is intended to be an extension of the drive system.

Controller Board

  • Digital board for interfacing with the low and high voltage drive boards
  • Compatible with all Xilinx FPGA platforms with FMC LPC or HPC connectors
  • FMC signals voltage adaptation interface for seamless operation on all FMC voltage levels
  • Fully isolated digital control and feedback signals
  • Isolated Xilinx XADC interface
  • 2 x Gbit Ethernet PHYs for high speed industrial communication, with 3rd party EtherCAT support
  • Single ended Hall, Differential Hall, Encoder, Resolver interfaces
  • Digital sensors interfaces
    • EnDat
    • BISS Interface

Drive Board

  • Drives motors up to 48V @ 20A
  • Drives 2 motors simultaneously
  • High frequency drive stage implemented with ADI isolated gate drivers
  • Supported motor types
    BLDC
    PMSM
    Brushed DC
    Stepper (bipolar / unipolar)
  • Integrated over current protection
  • Reverse voltage protection
  • Current and Voltage measurement using isolated ADCs
  • BEMF zero cross detection for sensorless control of PMSM or BLDC motors
  • Separate voltage supplies for the 2 motors so that the motors don't influence each other

Dynamometer System with Embedded Control

  • Two BLDC motors connected by a rigid couple in a dyno setup, which can be used to test real-time motor control performance.
  • One BLDC motor acts as an electronically adjustable load and is driven by the embedded control system. This motor can be directly connected to the FMC motor drive to get complex / active loads. The load can be driven also by the AD-FMCMOTCON2-EBZ to implement dynamic load profiles.
  • The other BLDC motor is driven by the FMC motor drive.
  • Measurement and display of load motor current
  • Measurement and display of load motor speed
  • External control using Analog Discovery and MathWorks Instrumentation Control Toolbox

Software:

Example reference designs showing how to use the platform with Xilinx® FPGAs or SoCs and high performance control algorithms from Mathworks® are provided together with the hardware. Information on the FMC board, and how to use it, the design package that surrounds it, and the software which can make it work, can be found by clicking the software link.

Tools & Simulations

Tools & Simulations 4

Reference Designs

Reference Designs 1

Analog Isolator using AD7400A

Novel Analog-to-Analog Isolator Using an Isolated Sigma-Delta Modulator, Isolated DC-to-DC Converter, and Active Filter

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CN0185

Novel Analog-to-Analog Isolator Using an Isolated Sigma-Delta Modulator, Isolated DC-to-DC Converter, and Active Filter

CN0185

Circuits from the lab

tooltip Info:Circuits from the lab
Novel Analog-to-Analog Isolator Using an Isolated Sigma-Delta Modulator, Isolated DC-to-DC Converter, and Active Filter

Features and Benefits

  • Analog to analog isolation
  • Provides both signal and power isolation
View Detailed Reference Design external link

Design & Integration Tools

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