Transimpedance Amplifier TZA200

The transimpedance amplifier TZA200 is designed for precise, high speed measurement of current in the µA to mA range. The output is a voltage linearly proportional to the input current.

The gain of the TZA200 is fixed.

Characteristics

Receptacles: BNC (input and output)
Rise time: 35ns (10MHz)
Noise equivalent current: 1 µA(RMS)
Gain control: none

Description

The TZA200 amplifier employs precision single ended transimpedance input stages to provide for low offset and high linearity throughout the full dynamic range. The single ended input stage is required for applications where the current source is inherently grounded externally.

FIELDS OF APPLICATION

These transimpedance amplifiers are particularly useful for the measurement of current from photodiodes. The output is a voltage linearly proportional to input current and thus, to input power in photodiode monitoring applications. The fast response time at high signal-noise-ratio makes the TZA200 series particularly useful in systems control feedback loops. These amplifiers have a particularly high bandwidth of 10MHz allowing monitoring of high frequency noise components of many light sources. The TZA200 series is insensitive to electromagnetic interference by design, an important factor when working in „dirty“ industrial environments. These units are provided in OEM-style enclosures. The case wings provide for mounting on standard 25mm and 1“ optical table tops and for OEM applications.

Specifications

Parameter	Conditions	Min	Typ	Max	Units
Input
Input range (full scale)				4.5	mA
Noise equivalent current (NEI_RMS)				1	µA
Connectors			BNC (Adapters for other connector systems available.)
Output
Function			Linear analogue : V_out = scale factor x I_in
Output range (full scale)	High-Z termination 50Ω termination	4.0 2.0		4.5 2.25	V V
Connectors			BNC (Adapters for other connector systems available.)
Output scale	High Z-termination 50Ω termination		1 0.5		V/mA V/mA
Rise /Fall time (10% – 90%)	Source capacitance < 100pF			35	ns
Setting time (1%)	Source capacitance < 100pF			100	ns
Accuracy		± 1			%
Output impedance				50	Ω
Power supply
Type			Wall plug (supplied)
Dimensions
	1 channel	102 x 45 x 116 (w x h x l)				mm
	4 channels	102 x 106 x 116 (w x h x l)				mm
	19“ rack modules	3U