SBOSA51 December   2020 THS4567

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  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: Differential TIA Mode, ICM loop enabled
    6. 6.6 Electrical Characteristics: FDA operation, ICM loop disabled
    7. 6.7 Typical Characteristics: (VS+) – (VS–) = 5 V
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Main Amplifier
      2. 7.3.2 Output Common-Mode Control
      3. 7.3.3 Input Common-Mode Control
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Differential Transimpedance Amplifier Mode
      3. 7.4.3 Fully Differential Amplifier (FDA) Mode
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Noise Analysis
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure (THS4567 in TIA Mode)
        1. 8.2.2.1 OPA Mode Configuration
      3. 8.2.3 Application Curves
    3. 8.3 Differential TIA with 0-V Biased Photodiode
    4. 8.4 Differential AC Coupled TIA
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
      1. 10.1.1 Board Layout Recommendations
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

6.5 Electrical Characteristics: Differential TIA Mode, ICM loop enabled

VS+ = 2.5 V, VS– = –2.5 V, VOCM = Open, VICM = Open, RF = 1 MΩ, CF = 0.4 pF, CIN = 10 pF (on each input pin), AMP_EN = 2.5 V, ICM loop enabled (ICM_EN = 2.5 V) and TA = 25℃. (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
AC PERFORMANCE (ICM LOOP)
GBWP Differential-transimpedance gain bandwidth product VOUT = 100 mVPP 220 MHz
Input Common-Mode control loop small-signal bandwidth VOUT = 100 mVPP 5 MHz
iN Input differential current noise f = 100 kHz, ICM loop disabled 0.02 pA/√Hz
f= 100 kHz, output current of ICM loop, ICM_CTL (3) < 750 nA 0.35
f= 100 kHz, Output current of ICM loop, ICM_CTL (3) < 2.8 µA 0.5
f= 100 kHz, Output current of ICM loop, ICM_CTL (3) < 5.5 µA 0.65
f= 100 kHz, Output current of ICM loop, ICM_CTL (3) < 17 µA 1.1
f= 100 kHz, Output current of ICM loop, ICM_CTL (3) < 55 µA 1.9
DC PERFORMANCE (ICM LOOP)
VICM(1) VICM pin default voltage above VS– VICM pin open (voltage measured at pin 8) 1.4 1.55 1.75 V
VICM (1) Default input common-mode voltage above VS–  VICM pin open, VICM = (VIN+ + VIN–)/2 1.4 1.55 1.75 V
ΔVICM/ΔTA Input common-mode voltage drift TA = –40°C to +125°C, VICM pin open 160 µV/°C
ΔVICM/
ΔICM_CTL 		Input common-mode voltage vs. ICM_CTL current (2) (3) ICM_CTL variation = 5 µA to 20 µA 2 2.8 3.6 mV/µA
ΔVICM/ΔTA Input common-mode voltage offset drift TA = –40°C to +125°C, VICM pin driven to midsupply 22 µV/°C
VIN_OS Input common-mode offset error VICM pin driven to midsupply,
ICM_CTL = 0(2), VIN_OS = (VICM – VICM)		 –25 ±2.5 25 mV
VICM pin DC input resistance VICM pin driven to midsupply 200 kΩ
VICM input high ≤ ±20-mV shift from midsupply offset, ICM_CTL ≤ 100 µA VS+ – 1.5 VS+ – 1.3 V
VICM input low ≤ ±20-mV shift from midsupply offset, ICM_CTL ≤ 100 µA VS– + 0.8 VS– + 1 V
ICM_OS Input common-mode control current offset mismatch between inputs ICM_OS = ΔI(CM_CTL, IN+/IN–)/Average ICM_CTL, ICM_CTL = 10 µA 0.5%
(1) VICM refers to the common-mode or average voltage at the FDA inputs (IN+ and IN–). When the input common-mode (ICM) control function is enabled (ICM_EN = HIGH), the  device generates matched source/sink control currents to drive the input pins towards the VICM pin reference voltage. Therefore VICM represents the voltage at pin 8, while VICM represents the average input voltage.
(2) ICM_CTL refers to the magnitude of the matched source/sink control currents generated by the ICM loop at the  device IIN+ and IIN– pins.
(3) A positive ICM_CTL current is defined as a sinking (pull-down) current, generated by the ICM control loop to balance the total currents (external common-mode + feedback) that flow into the FDA input pins.