Transimpedance Amplifiers
  • GN1032
  • 2.5Gb/s Transimpedance Amplifier with Automatic Gain Control
  • GN1035
  • GN1035 2.5Gb/s Transimpedance Amplifier with Automatic Gain Control
  • GN1052
  • 10/11.3 Gb/s Limiting Transimpedance Amplifier
  • GN1052CW
  • 10/11.3Gb/s Transimpedance Amplifier
  • GN1052WA2
  • 10/11.3Gb/s Transimpedance Amplifier
  • GN1055
  • 10/11.3 Gb/s Limiting Transimpedance Amplifier with Slicing Adjust
  • GN1056
  • 10/11.3 Gb/s Linear Transimpedance Amplifier
  • GN1057
  • 10/11.3 Gb/s Transimpedance Amplifier with Automatic Gain Control
Semtech GN1052CWA2

Semtech GN1052CWA2

10/11.3Gb/s Transimpedance Amplifier

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Semtech’s GN1052CWA2 is a fully integrated silicon germanium BiCMOS transimpedance amplifier, providing wideband, low noise preamplification of signal current from a PIN photodiode or APD. It features differential outputs. A decoupling capacitor on the supply is the only external component required. 


  • Single +3.3V power supply
  • Power dissipation =180mW (typ)
  • Input Noise Density 10pA/√Hz
  • Input noise current = 1 μA rms when used with a 0.2pF detector and 1nH input bond wire
  • Transimpedance gain = 4k? into a 100? load (differential)
  • Input current overload = 2.6mA pk (+1.1dBm for 1A/W responsivity - meets 10 Gigabit Ethernet specification)
  • Upper Bandwidth (-3dB) = 13GHz
  • Lower Bandwidth (-3dB) = 24kHz
  • Operates at OC-192/STM-64 up to 11.3Gb/s NRZ rates
  • Power supply rejection at 100kHz = 16dB
  • Optimized for PIN photodiodes
  • Can be used with APD (0.4pF) at 10Gb/s
  • RSSI (Receive Signal Strength Indicator), current output operates from sensitivity to overload
  • Constant photodiode reverse bias voltage = 2V (anode to input, cathode to VCC)
  • Minimal external components, supply decoupling only
  • Operating junction temperature range = -40 to +125°C


  • SONET/SDH-based transmission systems, test equipment and modules
  • OC-192 fibre optic modules and line termination
  • 10 Gigabit Ethernet
  • Fibre Channel
  • Serial data systems up to 11.3Gb/s

Order Codes

Type Package

GN1052CWA2-CHIP Bare Die

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