TZA200

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 APPLI ...Read more

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

Interfaces: DB9 (analogue outputs)
Rise time: 35ns (10MHz)
Noise equivalent current: 1 µA(RMS) 
Gain control: none



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.

- Case: gull wing, lab style, 19” rack module

- Number of channels: 1, 2, 3, 4


What does an output impedance of 50Ω mean?

The output impedance of an amplifier is an important factor when dealing with fast signals. The speed of the TZA200 is fast enough for this parameter to be relevant. Essentially, the output of the amplifier is a 50Ω resistance in series with the output. This allows you to terminate the signal line with a 50Ω resistance to prevent back reflections. The result is a clean signal transient without overshoot. The disadvantage is that the signal voltage is halved by doing this. The amplifier may be used without the 50Ω termination resistance, but then there will be overshoot when amplifying fast transients.

Spezifikationen TZA200