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ALM2403-Q1

ACTIVE

Automotive, dual-channel, high-voltage, power op amp with low distortion for resolver applications

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Data sheet

ALM2403-Q1

ACTIVE
Data sheet Order now

Product details

Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 24 Iout (typ) (A) 0.45 GBW (typ) (MHz) 21 Slew rate (typ) (V/µs) 50 Vos (offset voltage at 25°C) (max) (mV) 25 Offset drift (typ) (V/°C) 0.000015 Iq per channel (typ) (mA) 3.6 Features Adj Current Limit, EMI Hardened, High Cload Drive, Shutdown Rating Automotive Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Input bias current (max) (pA) 100 CMRR (typ) (dB) 94 Rail-to-rail In, Out Architecture Bipolar
Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 24 Iout (typ) (A) 0.45 GBW (typ) (MHz) 21 Slew rate (typ) (V/µs) 50 Vos (offset voltage at 25°C) (max) (mV) 25 Offset drift (typ) (V/°C) 0.000015 Iq per channel (typ) (mA) 3.6 Features Adj Current Limit, EMI Hardened, High Cload Drive, Shutdown Rating Automotive Operating temperature range (°C) -40 to 125 TI functional safety category Functional Safety-Capable Input bias current (max) (pA) 100 CMRR (typ) (dB) 94 Rail-to-rail In, Out Architecture Bipolar
HTSSOP (PWP) 14 32 mm² 5 x 6.4
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, T A
  • Functional-safety capable
  • High output current drive: 500 mA, peak (per channel)
    • Replaces discrete op amps and transistors
  • Wide supply range for both supplies (up to 24 V)
  • Overtemperature shutdown
  • Current limit
  • Shutdown pin for low I Q applications
  • 21-MHz gain bandwidth with 50-V/µs slew rate
  • Package: 14-pin HTSSOP (PWP)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, T A
  • Functional-safety capable
  • High output current drive: 500 mA, peak (per channel)
    • Replaces discrete op amps and transistors
  • Wide supply range for both supplies (up to 24 V)
  • Overtemperature shutdown
  • Current limit
  • Shutdown pin for low I Q applications
  • 21-MHz gain bandwidth with 50-V/µs slew rate
  • Package: 14-pin HTSSOP (PWP)

The ALM2403-Q1 is a dual-power op amp with features and performance that make this device preferable for resolver-based applications. The high-gain bandwidth and slew rate of the device, along with a continuous high-output current-drive capability, make this device an excellent choice to provide the low distortion and differential high-amplitude excitation required for exciting the resolver primary coil. Current limiting and overtemperature detection enhance overall system robustness, especially when driving analog signals over wires that are susceptible to faults.

The small HTSSOP package with thermal pad and low R θJA allows high currents to be delivered to loads while minimizing board space. The higher gain bandwidth of the ALM2403-Q1 allows the device to be configured as a filter stage while still providing high output drive, thus significantly reducing the total solution size of a resolver drive signal chain. This reduced solution size is a key advantage offered by the ALM2403-Q1 when used in automotive and industrial applications.

The ALM2403-Q1 is a dual-power op amp with features and performance that make this device preferable for resolver-based applications. The high-gain bandwidth and slew rate of the device, along with a continuous high-output current-drive capability, make this device an excellent choice to provide the low distortion and differential high-amplitude excitation required for exciting the resolver primary coil. Current limiting and overtemperature detection enhance overall system robustness, especially when driving analog signals over wires that are susceptible to faults.

The small HTSSOP package with thermal pad and low R θJA allows high currents to be delivered to loads while minimizing board space. The higher gain bandwidth of the ALM2403-Q1 allows the device to be configured as a filter stage while still providing high output drive, thus significantly reducing the total solution size of a resolver drive signal chain. This reduced solution size is a key advantage offered by the ALM2403-Q1 when used in automotive and industrial applications.
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Technical documentation

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Type Title Date
* Data sheet ALM2403-Q1 Automotive, Low-Distortion, Dual-Channel Operational Amplifier With Integrated Protection for Resolver Drive datasheet (Rev. A) PDF | HTML 30 Mar 2023
Application note Parallel Amplifiers for Higher Output Power: An Improved Howland Pump Approach PDF | HTML 11 Jul 2021
EVM User's guide ALM2403-Q1 Evaluation Module User's Guide (Rev. A) PDF | HTML 23 Mar 2021
Application note Applying the ALM2403-Q1 Single-Chip Resolver Solution to Reduce System Costs 22 Dec 2020
Functional safety information ALM2403-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 30 Nov 2020
Application note Overvoltage Protection of Resolver-Based Circuits PDF | HTML 19 Nov 2020
Certificate ALM2403Q1EVM EU Declaration of Conformity (DoC) 19 Jun 2020
Technical article Improve efficiency in your HEV/EV resolver 27 Nov 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

ALM2403Q1EVM — Dual operational amplifier with high-current output and slew rate evaluation module

The ALM2403-Q1 is an automotive grade, dual high-voltage, high current operational amplifier (op amp) with protection features from Texas Instruments. This ALM2403Q1EVM evaluation module (EVM) is designed to provide access to the features and measure the performance of the ALM2403-Q1 device.
User guide: PDF | HTML
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Simulation model

ALM2403-Q1 PSpice Model (Rev. B)

SBOMBJ4B.ZIP (28 KB) - PSpice Model
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Simulation model

ALM2403-Q1 TINA-TI Reference Design (Rev. A)

SBOMBJ2A.TSC (301 KB) - TINA-TI Reference Design
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Simulation model

ALM2403-Q1 TINA-TI Spice Model (Rev. A)

SBOMBJ3A.ZIP (10 KB) - TINA-TI Spice Model
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Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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HTSSOP (PWP) 14 View options
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