ZHCSMW3A December   2020  – November 2021 LMH32404-Q1

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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
    6. 6.6 Electrical Characteristics: Logic Threshold and Switching Characteristics
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Clamping and Input Protection
      2. 7.3.2 ESD Protection
      3. 7.3.3 Differential Output Stage
    4. 7.4 Device Functional Modes
      1. 7.4.1 Ambient Light Cancellation (ALC) Mode
      2. 7.4.2 Channel Multiplexer Mode
      3. 7.4.3 Low-Power Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Standard TIA Application
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Increase Channel Density for Optical Front-End Systems
        1. 8.2.2.1 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 支持资源
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 术语表
  12. 12Mechanical, Packaging, and Orderable Information

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6.5 Electrical Characteristics

VDD = 3.3 V, VOCM = Open, VOD = 0 V, CPD (1) = 1 pF, EN = 0 V, IDC_EN = 3.3 V, RL = 100 Ω (differential load between OUT+ and OUT-), and TA = 25℃. (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
AC PERFORMANCE
SSBW Small-signal bandwidth VOUT = 100 mVPP 350 MHz
LSBW Large-signal bandwidth VOUT = 1 VPP 300 MHz
tR, tF Rise and fall time VOUT = 100 mVPP, Pulse width = 10 ns 1.25 ns
Slew Rate(4) VOUT = 1 VPP, Pulse width = 10 ns 750 V/µs
Overload recovery time (1% settling) IIN = 100 mA, Pulse width = 10 ns 12 ns
Overload pulse width extension(5) IIN = 100 mA, Pulse width = 10 ns 5 ns
iN Integrated input current noise f = 250 MHz 56 nARMS
Adjacent channel crosstalk f = 100 MHz -49 dBc
Non adjacent channel crosstalk f = 100 MHz -58 dBc
All hostile channels crosstalk f = 100 MHz -39 dBc
DC PERFORMANCE
Z21 Small-signal transimpedance gain(6) 17 20 23 kΩ
Channel-to-channel gain matching ±0.1 %
VOD Differential output offset voltage
(VOUT– – VOUT+)		 –20 ±5 20 mV
Differential output offset voltage drift, ΔVOD/ΔTA ±20 µV/°C
INPUT PERFORMANCE
VIN Default input bias voltage Input pin floating 2.42 2.47 2.52 V
Default input bias voltage drift, ΔVIN/ΔTA Input pin floating 1.1 mV/°C
IIN DC Input current range Z21 < 3-dB degradation from IIN = 5 µA 60 72 µA
OUTPUT PERFORMANCE
VOH Single-sided output voltage swing(high)(2) TA = 25°C 2.85 2.9 V
VOL Single-sided output voltage swing (low)(2) TA = 25°C 0.36 0.39 V
IOUT Linear output drive (sink and source) TA = 25°C, IIN = 50 µA , RL = 25 Ω 24 26.6 32 mA
TA = –40°C, IIN = 50 µA , RL = 25 Ω 27.1
TA = 125°C, IIN = 50 µA , RL = 25 Ω 25.1
ISC Output short-circuit current (differential) (3) 70 mA
ZOUT DC differential output impedance MX = high 18 21 24 Ω
MX = low 1 MΩ
OUTPUT COMMON-MODE CONTROL (VOCM) PERFORMANCE
SSBW Small-signal bandwidth VOCM = 100 mVPP at VOCM pin 375 MHz
LSBW Large-signal bandwidth VOCM = 1 VPP at VOCM pin 120 MHz
eN Output common-mode noise f = 10 MHz, 1 nF capacitor to GND on VOCM pin 15 nV/√Hz
AV Gain, (ΔVOCM/ΔVOCM) IN floating, VOCM = 1.1 V (driven) 1 V/V
Gain Error TA = 25°C, VOCM = 0.7 V to 2.3 V –2% 0.5% 2%
TA = –40°C to 125°C, VOCM = 0.7 V to 2.3 V ±1%
Input impedance 17 kΩ
VOCM VOCM pin default offset from 1.1 V VOCM floating, (VOCM - 1.1 V) –25 8 45 mV
VOCM error vs Input current, ΔVOCM/ΔIIN VOCM driven to 1.1 V 10 V/A
VOCM Output common-mode voltage,
(VOUT+ + VOUT-)/2		 TA = 25°C, VOCM floating 1 1.1 1.2 V
Output common-mode voltage drift,
(ΔVOCM/ΔTA)		 TA = –40°C to 125°C, VOCM floating 300 µV/°C
VOCM Output common-mode voltage,
(VOUT+ + VOUT-)/2		 TA = 25°C, VOCM driven to 1.1V 1.05 1.1 1.15 V
Output common-mode voltage drift,
(ΔVOCM/ΔTA)		 TA = –40°C to 125°C,
VOCM driven to 1.1V		 –10 µV/°C
VOCM headroom to positive supply voltage TA = 25°C, VOCM offset shift from VOCM = 1.1 V (driven) < 10-mV 1.2 1.3 V
TA = –40°C to 125°C, VOCM offset shift from VOCM = 1.1 V (driven) < 10-mV 1 V
VOCM headroom to negative supply voltage TA = 25°C, VOCM offset shift from VOCM = 1.1 V (driven) < 10-mV 0.2 0.65 V
TA = –40°C to 125°C, VOCM offset shift from VOCM = 1.1 V (driven) < 10-mV 0.25 V
OUTPUT DIFFERENTIAL OFFSET (VOD) PERFORMANCE
SSBW Small-signal bandwidth VOD = 100 mVPP 45 MHz
LSBW Large-signal bandwidth VOD = 1 VPP 17 MHz
VOD Default VOD pin voltage 0.5 V
VOS_D Differential output offset,
VOUT = (VOUT– –VOUT+)		 IN floating, VOD = 0.5 V 470 500 530 mV
Differential output offset drift, ΔVOS_D/ΔTA IN floating, VOD = 0.5 V 0.03 mV/℃
VOS_D Differential output offset,
VOUT = (VOUT– –VOUT+)		 IN floating, VOD floating 470 500 530 mV
Differential output offset drift, ΔVOS_D/ΔTA IN floating, VOD floating 0.05 mV/℃
AV Gain, (ΔVOUT/ΔVOD),
where VOUT = (VOUT– –VOUT+)		 IN floating, VOCM = 1.1 V (driven) -1.01 V/V
Gain Error TA = 25℃, VOD = 0.3 V to 1.2 V –5% ±0.8% 5%
TA = –40℃ to 125℃, VOD = 0.3 V to 1.2 V ±1.5%
Input impedance 2.5 kΩ
AMBIENT LIGHT CANCELLATION PERFORMANCE (IDC_EN = 0 V) (7)
Settling time, 1% (2 mV) of settled VOS IIN = 0 µA → 10 µA 20 µs
IIN = 10 µA → 0 µA 60
Ambient light current cancellation range Differential output offset (VOUT– – VOUT+) shift from IDC = 10 µA < 10 mV 1.8 2.5 mA
POWER SUPPLY
IQ Quiescent current, per channel, 
(VDD1 + VDD2)		 MX = 3.3 V, TA = 25°C 22.8 27.7 32.5 mA
MX = 0 V, TA = 25°C 8.5 10.4 13.4
PSRR+ Positive power-supply rejection ratio VDD1 = VDD2 54 74 dB
SHUTDOWN
IQ Total disabled quiescent current
(EN = VDD)		 TA = 25°C 2.35 3 mA
TA = –40°C 2.25
TA = 125°C 2.55
(1) Input capacitance of photodiode.
(2) Output slammed to the rail and VOCM adjusted to achieve output swing.
(3) Device cannot withstand continuous short-circuit between the differential outputs.
(4) Average of rising and falling slew rate.
(5) Pulse width extension measured at 50% of pulse height of a square wave.
(6) Gain measured at the amplifier output pins when driving a 100-Ω resistive load. At higher resistor loads the gain will increase.
(7) Enabling the ambient light cancellation loop will add noise to the system.
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