Product details

Number of channels (#) 2 Total supply voltage (Min) (+5V=5, +/-5V=10) 4.5 Total supply voltage (Max) (+5V=5, +/-5V=10) 16 Output current (Typ) (mA) 400 GBW (Typ) (MHz) 2.1 Slew rate (Typ) (V/us) 3.4 Vos (offset voltage @ 25 C) (Max) (mV) 7 Offset drift (Typ) (uV/C) 65 Iq per channel (Typ) (mA) 4 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) 15 CMRR (Typ) (dB) 97 Rail-to-rail Out Architecture Bipolar
Number of channels (#) 2 Total supply voltage (Min) (+5V=5, +/-5V=10) 4.5 Total supply voltage (Max) (+5V=5, +/-5V=10) 16 Output current (Typ) (mA) 400 GBW (Typ) (MHz) 2.1 Slew rate (Typ) (V/us) 3.4 Vos (offset voltage @ 25 C) (Max) (mV) 7 Offset drift (Typ) (uV/C) 65 Iq per channel (Typ) (mA) 4 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) 15 CMRR (Typ) (dB) 97 Rail-to-rail 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, TA
  • Functional-Safety Capable
  • Low offset voltage: 1 mV (typical)
  • High output current drive: 400 mA, continuous (per channel)
    • Replaces discrete op amps and transistors
  • Wide supply range for both supplies (up to 16 V)
  • Overtemperature shutdown
  • Current limit
  • Shutdown pin for low IQ applications
  • Stable with large capacitive loads
  • 2-MHz gain bandwidth with 3.4-V/µs slew rate
  • Internal RF/EMI filter
  • Package: 14-pin HTSSOP (PWP)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional-Safety Capable
  • Low offset voltage: 1 mV (typical)
  • High output current drive: 400 mA, continuous (per channel)
    • Replaces discrete op amps and transistors
  • Wide supply range for both supplies (up to 16 V)
  • Overtemperature shutdown
  • Current limit
  • Shutdown pin for low IQ applications
  • Stable with large capacitive loads
  • 2-MHz gain bandwidth with 3.4-V/µs slew rate
  • Internal RF/EMI filter
  • Package: 14-pin HTSSOP (PWP)

The ALM2402F-Q1 is a dual-power op amp with features and performance that make this device preferable for resolver-based automotive 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 a low distortion and differential high amplitude excitation required for modern resolvers. Current limiting and overtemperature detection enhance overall system robustness when driving analog signals over wires that are susceptible to faults.

The ALM2402F-Q1 rail-to-rail output, enabled by the low Rds(on) PMOS and NMOS transistors, keeps the power dissipation low. The small HTSSOP package with thermal pad and low RθJA allows users to deliver high currents to loads while minimizing board space. This minimized board space is one of the key advantages offered by the ALM2402F-Q1 when used in modern hybrid and electric vehicles.

The ALM2402F-Q1 maximum output voltage is determined using the Maximum Output Voltage vs Frequency plot at the bottom of this page.

The ALM2402F-Q1 is a dual-power op amp with features and performance that make this device preferable for resolver-based automotive 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 a low distortion and differential high amplitude excitation required for modern resolvers. Current limiting and overtemperature detection enhance overall system robustness when driving analog signals over wires that are susceptible to faults.

The ALM2402F-Q1 rail-to-rail output, enabled by the low Rds(on) PMOS and NMOS transistors, keeps the power dissipation low. The small HTSSOP package with thermal pad and low RθJA allows users to deliver high currents to loads while minimizing board space. This minimized board space is one of the key advantages offered by the ALM2402F-Q1 when used in modern hybrid and electric vehicles.

The ALM2402F-Q1 maximum output voltage is determined using the Maximum Output Voltage vs Frequency plot at the bottom of this page.

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Technical documentation

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Type Title Date
* Data sheet ALM2402F-Q1 Automotive, Dual Operational Amplifier With High Current Output for Resolver Excitation datasheet (Rev. B) 12 Oct 2021
Application note Parallel Amplifiers for Higher Output Power: An Improved Howland Pump Approach 11 Jul 2021
Application note Overvoltage Protection of Resolver-Based Circuits 19 Nov 2020
Functional safety information ALM2402F-Q1 Functional Safety, FIT Rate, and Failure Mode Distribution 02 Jul 2020
Technical article Improve efficiency in your HEV/EV resolver 27 Nov 2019
User guide ALM2402F-Q1 Evaluation Module User's Guide 06 Sep 2019

Design & development

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

Evaluation board

ALM2402FQ1EVM — ALM2402F-Q1 dual operational amplifier with high current output and slew rate evaluation module

The ALM2402F-Q1 is an automotive grade, dual high-voltage, high current operational amplifier (op amp) with protection features from Texas Instruments. This EVM is designed to provide access to the features and measure the performance of the ALM21402F-Q1. 
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Simulation model

ALM2402FQ TINA-TI SPICE Model (Rev. B)

SBOMB15B.ZIP (11 KB) - TINA-TI Spice Model
Simulation model

ALM2402F-Q1 TINA-TI Reference Design (Rev. B)

SBOMB16B.TSC (368 KB) - TINA-TI Reference Design
Simulation model

ALM2402F-Q1 PSpice Model (Rev. B)

SBOMB20B.ZIP (26 KB) - PSpice Model
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 (...)
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 (...)
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 op-amp gain with feedback (...)
Reference designs

TIDM-02009 — ASIL D safety concept-assessed high-speed traction, bi-directional DC/DC conversion reference design

This reference design demonstrates control of HEV/EV traction inverter and bi-directional DC-DC converter by a single TMS320F28388D real-time C2000™ MCU. The traction control uses a software-based resolver to digital converter (RDC) driving the motor to a high speed up to 20,000 RPM. The DC-DC (...)
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HTSSOP (PWP) 14 View options

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