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LMH32401-Q1 Automotive, 450-MHz, Programmable-Gain, Differential-Output Transimpedance Amplifier
SBOSAF0A
april 2023 – august 2023
LMH32401-Q1
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CONTENTS
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LMH32401-Q1 Automotive, 450-MHz, Programmable-Gain, Differential-Output Transimpedance Amplifier
1
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics: Gain = 2 kΩ
6.6
Electrical Characteristics: Gain = 20 kΩ
6.7
Electrical Characteristics: Both Gains
6.8
Electrical Characteristics: Logic Threshold and Switching Characteristics
6.9
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Switched Gain Transimpedance Amplifier
7.3.2
Clamping and Input Protection
7.3.3
ESD Protection
7.3.4
Differential Output Stage
7.4
Device Functional Modes
7.4.1
Ambient Light Cancellation (ALC) Mode
7.4.2
Power-Down Mode (Multiplexer Mode)
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.3
Application Curves
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
9
Device and Documentation Support
9.1
Device Support
9.1.1
Development Support
9.2
Documentation Support
9.2.1
Related Documentation
9.3
Receiving Notification of Documentation Updates
9.4
Support Resources
9.5
Trademarks
9.6
Electrostatic Discharge Caution
9.7
Glossary
10
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
RGT|16
MPQF119H
Thermal pad, mechanical data (Package|Pins)
RGT|16
QFND778
Orderable Information
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sbosaf0a_pm
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Data Sheet
LMH32401-Q1 Automotive, 450-MHz, Programmable-Gain, Differential-Output Transimpedance Amplifier
1
Features
AEC-Q100 qualified for automotive applications:
Temperature grade 1: –40°C to +125°C, T
A
Integrated programmable gain: 2 kΩ or 20 kΩ
Performance at gain = 2 kΩ, C
PD
= 1 pF:
Bandwidth: 450 MHz
Input-referred noise: 250 nA
RMS
Rise and fall time: 0.8 ns
Performance at gain = 20 kΩ, C
PD
= 1 pF:
Bandwidth: 275 MHz
Input-referred noise: 49 nA
RMS
Rise and fall time: 1.3 ns
Integrated ambient light cancellation
Integrated 100-mA protection clamp
Integrated output multiplexer
Wide output swing: 1.5 V
PP
Quiescent current: 30 mA
Package: 16-pin, wettable-flank VQFN
