OPT101 Monolithic Photodiode and Single-Supply Transimpedance Amplifier | TI.com

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Monolithic Photodiode and Single-Supply Transimpedance Amplifier



The OPT101 is a monolithic photodiode with on-chip transimpedance amplifier. The integrated combination of photodiode and transimpedance amplifier on a single chip eliminates the problems commonly encountered in discrete designs, such as leakage current errors, noise pick-up, and gain peaking as a result of stray capacitance. Output voltage increases linearly with light intensity. The amplifier is designed for single or dual power-supply operation.

The 0.09 inch × 0.09 inch (2.29 mm × 2.29 mm) photodiode operates in the photoconductive mode for excellent linearity and low dark current.

The OPT101 operates from 2.7 V to 36 V supplies and quiescent current is only 120 µA. This device is available in clear plastic 8-pin PDIP, and J-lead SOP for surface mounting. The temperature range is 0°C to 70°C.


  • Single Supply: 2.7 to 36 V
  • Photodiode Size: 0.090 inch × 0.090 inch
    (2.29 mm × 2.29 mm)
  • Internal 1-MΩ Feedback Resistor
  • High Responsivity: 0.45 A/W (650 nm)
  • Bandwidth: 14 kHz at RF = 1 MΩ
  • Packages: Clear Plastic 8-pin PDIP and J-Lead


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Part number Order Interface Supply range (Nom) Quiescent current (Max) (uA) Package size: mm2:W x L (PKG) Approx. price (US$) Rating Operating temperature range (C) Package Group Input type
OPT101 Order now Voltage     2.7V to 36V     120     8PDIP: 90 mm2: 9.4 x 9.525 (PDIP | 8)
8SOP: 100 mm2: 10.54 x 9.525 (SOP | 8)    
3.51 | 1ku     Catalog     0 to 70     PDIP | 8
SOP | 8