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LMH32404

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Four-channel differential-output transimpedance amplifier with integrated multiplexing

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Data sheet

LMH32404

ACTIVE
Data sheet Order now

Product details

Number of channels 4 GBW (typ) (MHz) 350 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 3.45 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3 Vos (offset voltage at 25°C) (max) (mV) 35 Rail-to-rail No Features Integrated TIA BW at Acl (MHz) 350 Operating temperature range (°C) -40 to 125 Rating Catalog
Number of channels 4 GBW (typ) (MHz) 350 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 3.45 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3 Vos (offset voltage at 25°C) (max) (mV) 35 Rail-to-rail No Features Integrated TIA BW at Acl (MHz) 350 Operating temperature range (°C) -40 to 125 Rating Catalog
DIESALE (Y) — See data sheet VQFN (RHF) 28 20 mm² 5 x 4
  • Gain: 20 kΩ
  • Performance, CPD = 1 pF:
    • Bandwidth: 350 MHz
    • Input-referred noise: 56 nARMS
    • Rise, fall time: 1.25 ns
  • Quiescent current: 28 mA/channel
  • Standby mode: 10 mA/channel
  • Low power mode: 2.5 mA (4 channels)
  • Channel switching time: 10 ns
  • Integrated ambient light cancellation
  • Integrated 100-mA protection clamp
  • 4 Input channels and 4 differential output channels
  • Integrated multiplexer enables flexible configurability between optical sensor and ADC/TDC
  • Multiple LMH32404s can be combined in parallel to create a wider field-of-view (FoV)
  • Package: 28-pin VQFN
    • Bare die
  • Temperature range: –40°C to +125°C
  • Gain: 20 kΩ
  • Performance, CPD = 1 pF:
    • Bandwidth: 350 MHz
    • Input-referred noise: 56 nARMS
    • Rise, fall time: 1.25 ns
  • Quiescent current: 28 mA/channel
  • Standby mode: 10 mA/channel
  • Low power mode: 2.5 mA (4 channels)
  • Channel switching time: 10 ns
  • Integrated ambient light cancellation
  • Integrated 100-mA protection clamp
  • 4 Input channels and 4 differential output channels
  • Integrated multiplexer enables flexible configurability between optical sensor and ADC/TDC
  • Multiple LMH32404s can be combined in parallel to create a wider field-of-view (FoV)
  • Package: 28-pin VQFN
    • Bare die
  • Temperature range: –40°C to +125°C

The LMH32404 is a quad-channel, single-ended-input to differential-output transimpedance amplifier (TIA) for light detection and ranging (LIDAR) applications and laser distance measurement systems.

The LMH32404 has an integrated 100-mA clamp on each channel that protects the amplifier and allows the device to recover rapidly from an overloaded input condition. The LMH32404 also features an integrated ambient light cancellation (ALC) circuit on each channel that can be used instead of AC coupling between the photodiode and the amplifier to save board space and system cost. The ALC loop should be disabled when DC and low frequency content is measured.

Each LMH32404 channel has integrated switches on the output to disconnect the differential output amplifier from the output pins and put the channel in standby mode. When switching between different channels, the transistion time is only 10 ns. The LMH32404 can be placed in low-power mode using the EN pin to conserve power when the amplifier is not being used.

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The LMH32404 is a quad-channel, single-ended-input to differential-output transimpedance amplifier (TIA) for light detection and ranging (LIDAR) applications and laser distance measurement systems.

The LMH32404 has an integrated 100-mA clamp on each channel that protects the amplifier and allows the device to recover rapidly from an overloaded input condition. The LMH32404 also features an integrated ambient light cancellation (ALC) circuit on each channel that can be used instead of AC coupling between the photodiode and the amplifier to save board space and system cost. The ALC loop should be disabled when DC and low frequency content is measured.

Each LMH32404 channel has integrated switches on the output to disconnect the differential output amplifier from the output pins and put the channel in standby mode. When switching between different channels, the transistion time is only 10 ns. The LMH32404 can be placed in low-power mode using the EN pin to conserve power when the amplifier is not being used.

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Technical documentation

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Type Title Date
* Data sheet LMH32404 Four-Channel, Differential Output, Multiplexed Transimpedance Amplifier With Integrated Clamping and Ambient Light Cancellation datasheet (Rev. C) PDF | HTML 16 Nov 2022
Application brief LiFi: TI High-Speed Products for Optical Wireless Communication PDF | HTML 07 Aug 2023
Application brief Time of Flight and LIDAR - Optical Front End Design (Rev. A) PDF | HTML 29 Apr 2022
EVM User's guide LMH32404RHFEVM User's Guide PDF | HTML 08 Dec 2020
Certificate LMH32404RHFEVM EU RoHS Declaration of Conformity (DoC) 13 Nov 2020

Design & development

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Evaluation board

LMH32404RHFEVM — 250-MHz, quad-channel, differential output transimpedance amplifier evaluation module

The LMH32404RHFEVM is an evaluation module (EVM) for the LMH32404RHF differential output transimpedance amplifier. The EVM features a transformer to convert the output to a 50-Ω single-ended connection for easy measurement with standard test equipment, and the option to convert to (...)
User guide: PDF | HTML
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Simulation model

LMH32404 TINA-TI Model (Rev. A)

SBOMBY4A.TSC (5163 KB) - TINA-TI Spice Model
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Simulation model

PSpice Circuit Containing LMH32404 Model

SBOMBK6.ZIP (39 KB) - PSpice Model
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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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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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DIESALE (Y) —
VQFN (RHF) 28 Ultra Librarian
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