SBOSAF0A april   2023  – august 2023 LMH32401-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics: Gain = 2 kΩ
    6. 6.6 Electrical Characteristics: Gain = 20 kΩ
    7. 6.7 Electrical Characteristics: Both Gains
    8. 6.8 Electrical Characteristics: Logic Threshold and Switching Characteristics
    9. 6.9 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Switched Gain Transimpedance Amplifier
      2. 7.3.2 Clamping and Input Protection
      3. 7.3.3 ESD Protection
      4. 7.3.4 Differential Output Stage
    4. 7.4 Device Functional Modes
      1. 7.4.1 Ambient Light Cancellation (ALC) Mode
      2. 7.4.2 Power-Down Mode (Multiplexer Mode)
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Development Support
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.7 Electrical Characteristics: Both Gains

at VDD = 3.3 V, VOCM = open, VOD = 0 V, CPD (1) = 1 pF, EN = 0 V, VGAIN = 0 V or 3.3 V, IDC_EN = 3.3 V, RL = 100 Ω, and
TA = 25℃ (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OUTPUT PERFORMANCE
VOH Single-sided output voltage swing (high)(2) TA = 25°C 2.87 2.9 V
VOL Single-sided output voltage swing (low)(2) TA = 25°C 0.36 0.39 V
IOUT_LIN Linear output drive (sink and source) TA = 25°C, IIN = 500 µA, gain = 2 kΩ,
RL = 25 Ω		 24 26.6 32 mA
TA = –40°C, IIN = 500 µA, gain = 2 kΩ,
RL = 25 Ω		 27.1
TA = 125°C, IIN = 500 µA, gain = 2 kΩ,
RL = 25 Ω		 25.1
ISC Output short-circuit current (differential) (3) 70 mA
ZOUT DC output impedance (differential) amplifier enabled 18 21 24 Ω
amplifier in shutdown 2.8 3.3 kΩ
OUTPUT COMMON-MODE CONTROL (VOCM) PERFORMANCE
SSBW Small-signal bandwidth VOCM = 100 mVPP at VOCM pin 285 MHz
LSBW Large-signal bandwidth VOCM = 1 VPP at VOCM pin 85 MHz
eN Output common-mode noise f = 10 MHz, 1-nF capacitor to GND on VOCM pin 17.8 nV/√Hz
AV Gain, (ΔVOCM / ΔVVOCM) IN floating, VVOCM = 1.1 V (driven) 1 V/V
Gain error TA = 25°C, VVOCM = 0.7 V to 2.3 V –2% 0.5% 2%
TA = –40°C to +125°C, VVOCM = 0.7 V to 2.3 V ±1%
Input impedance 17 kΩ
VOCMOS VOCM pin default offset from 1.1 V VOCM floating, (VVOCM measured –1.1 V) 0 10 20 mV
ΔVOCM/
ΔIIN		 VOCM error vs Input current Gain = 20 kΩ, VOCM driven to 1.1 V –15 µV/µA
VOCM Output common-mode voltage,
(VOUT+ + VOUT–) / 2		 TA = 25°C, VOCM pin floating 1.05 1.1 1.15 V
Output common-mode voltage drift, (ΔVOCM / ΔTA) TA = –40°C to +125°C, VOCM pin floating 75 µV/°C
VOCM Output common-mode voltage,
(VOUT+ + VOUT–) / 2		 TA = 25°C, VOCM pin driven to 1.1 V 1.05 1.1 1.15 V
Output common-mode voltage drift,
(ΔVOCM / ΔTA)		 TA = –40°C to +125°C,
VOCM pin driven to 1.1 V		 –14 µV/°C
OUTPUT DIFFERENTIAL OFFSET (VOD) PERFORMANCE
SSBW Small-signal bandwidth VOD = 100 mVPP at VOD pin 45 MHz
LSBW Large-signal bandwidth VOD = 1 VPP 14 MHz
VOS_D Differential output offset,
VOUT = (VOUT– – VOUT+)		 IN floating, VVOD = 0.5 V 490 510 530 mV
Differential output offset drift,
ΔVOS_D / ΔTA		 IN floating, VVOD = 0.5 V 0.03 mV/℃
VOS_D Differential output offset,
VOUT = (VOUT– – VOUT+)		 IN floating, VOD floating 490 510 530 mV
Differential output offset drift,
ΔVOS_D / ΔTA		 IN floating, VOD floating 0.04 mV/℃
AV Gain, (ΔVOUT / ΔVVOD), where
VOUT = (VOUT– – VOUT+)		 IN floating, VVOCM = 1.1 V (driven) 1.01 V/V
Gain error TA = 25℃, VVOD = 0 V to 1.2 V –5% –1% 5%
TA = –40℃ to +125℃, VVOD = 0 V to 1.2 V ±1.5%
Input impedance 2.5 kΩ
AMBIENT LIGHT CANCELLATION PERFORMANCE (IDC_EN = 0 V) (4)
Settling time (within VOD limit) IIN = 0 µA → 100 µA, gain = 2 kΩ 18 µs
IIN = 0 µA → 10 µA, gain = 20 kΩ 2.5
IIN = 100 µA → 0 µA, gain = 2 kΩ 35
IIN = 10 µA → 0 µA, gain = 20 kΩ 13
Ambient light current cancellation range Differential output offset (VOUT– – VOUT+) shift from IDC = 10 µA < ±10 mV 2 3 mA
POWER SUPPLY
IQ Quiescent current, total TA = 25°C 24 30 33.5 mA
TA = 125°C 32
TA = –40°C 27
PSRR+ Positive power-supply rejection ratio, VDD1 = VDD2 54 66 dB
SHUTDOWN
IQ Quiescent current, amplifier disabled
(EN = VDD)		 TA = 25°C 2.4 3.3 4.2 mA
TA = –40°C 2.75
TA = 125°C 5.2
Enable pin input bias current TA = 25°C 75 120 µA
(1) Input capacitance of photodiode.
(2) Output levels achieved by adjusting VOCM, VOD, and input current.
(3) Device cannot withstand continuous short-circuit between the differential outputs.
(4) Enabling the ambient light cancellation loop adds noise to the system.