Quad-channel transimpedance amplifier

TIA400 - Quad-channel transimpedance amplifier
TIA400 - Quad-channel transimpedance amplifier TIA400 transimpedance amplifier functional diagram TIA400 transimpedance amplifier frequency response TIA400 transimpedance amplifier input current noise density

Koheron TIA400 is a quad-channel transimpedance amplifier (TIA) with a bandwidth of 2 MHz and an input-referred current noise of less than 5 pA/√Hz. It is compatible with photodiodes with up to 200 pF input capacitance (including cable capacitance). Thanks to its multiple channels and its large input current range (up to ± 4 mA), TIA400 is well suited for system monitoring of optical powers.

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Transimpedance gain 2 kV/A or 10 kV/A
3 dB bandwidth 2 MHz (Cin = 5 pF)
Input current range ±4 mA
Input current noise density (1 MHz, Cin = 5 pF) 5 pA/√Hz
Maximum input capacitance 200 pF
Coupling DC
Output impedance 50 Ω
Output buffer gain 1 or 5
Output voltage range (high impedance) -8 V to 8 V
Output voltage range (50 Ω) -2 V to 2 V
Power supplies
Positive supply voltage 11.5 V to 13 V
Negative supply voltage (bipolar output) -13 V to -11.5 V
Negative supply voltage (unipolar output) -6 V to -4.5 V
Supply current 320 mA per rail
Quiescent current 55 mA per rail
Outside dimensions 79 mm x 66 mm x 13 mm
Weight 36 g
Operating temperature 0 °C to 50 °C

More Photodetectors

Functional diagram

TIA400 functional diagram


The frequency response and the input current noise density are shown for different photodiodes (capacitance Cpd) and input coaxial cable lengths (Lcoax, typical capacitance 1 pF/cm).

Frequency response

TIA400-2k frequency response

Input current noise density

TIA400-2k Input current noise density

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Dual power supply

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Export information

HS code 9030.33.70
Country of Origin France

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