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GPA4 User manual
1. GENERAL FEATURES
1.1. GENERAL DESCRIPTION
The GPA4 is a four channel general purpose amplifier. It can amplify and filters any
referenced single ended signal (i.e. signal referred to ground).
The four channels are completely independent and can be used simultaneously.
1.1. TECHNICAL SPECIFICATION
The GPA4 is a programmable amplifier with selectable high pass filter, low pass filter, gain
and offset compensation.
The GPA4 technical specifications are reported in Table 1.
Selectable High pass filter
Selectable Low pass filter
Selectable Gains
Gain error
Input resistance
Input range
Output range
Output offset
Offset compensation
v 1.2
TAB. 1: Amplifier technical specification
DC coupled
1 Hz (II order)
10 Hz (II order)
25 Hz (VIII order)
40 Hz (VIII order)
100 Hz (VIII order)
500 Hz (VIII order)
1, 2, 5, 10, 20, 50, 100, 200, 500, 1k, 2k, 5k V/V
< 5 %
12
> 10
4 V
4 V
< 5 mV
6.5 V, when DC coupled
pag. 3
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