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Quad-channel transimpedance amplifier
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.
| Quantity | Price |
|---|
Resources
Specifications
| TIA400-2k | |
|---|---|
| Transimpedance gain | 2 kV/A or 10 kV/A |
| 3 dB bandwidth | 2 MHz (Cin = 5 pF) |
| Input | |
| 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 | |
| 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 |
| Other | |
| Outside dimensions | 79 mm x 66 mm x 13 mm |
| Weight | 36 g |
| Operating temperature | 0 °C to 50 °C |
Functional diagram
Characterization
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
Input current noise density
