Application Information
The TPMC501 is a PCI Mezzanine Card compatible
module providing 32 galvanically isolated multiplexed 16
bit ADC channels. The data acquisition and conversion
time is mode-dependent: Maximum 12μs without channel /
gain change, maximum 14.5μs with channel / gain
change.
The ADC input channels can be software configured to
operate in single-ended mode (up to 32 input channels) or
differential mode (up to 16 input channels). Mixed mode
operation is also possible.
The ADC multiplexer is overvoltage protected up to
70Vpp. A programmable gain amplifier allows gains of 1,
2, 5, 10 (TPMC501-10R, -12R, -20R and –22R) or 1, 2, 4,
8 (TPMC501-11R, -13R, -21R and –23R). The full-scale
input voltage range for a gain of 1 is +/-10V for the
TPMC501-10R, -11R, -20R, -21R and 0V to 10V for the
TPMC501-12R, -13R, -22R, -23R.
Additionally the TPMC501 provides a sequencer to control
the analog inputs without wasting CPU time. Each channel
can be independently enabled and configured by a
sequencer instruction RAM.
After the last instruction of a programmed sequence has
completed the ADC data of all channels enabled for the
sequence are stored in the data RAM.
The repeat frequency of the sequencer can be
programmed by using the sequence timer. The sequence
timer is programmable from 100μs to 6.5535s in steps of
100μs. Whenever the timer reaches the programmed
value the sequencer starts a new sequence. A special
function is the sequencer continuous mode. It is activated,
if the sequence timer register is set to 0. In this mode the
sequencer will start again with the first instruction of the
sequence as soon as the last instruction of the previous
sequence has been completed.
Each TPMC501 is factory calibrated. The calibration data
is stored in an EEPROM unique to each TPMC501.
in the Calibration-PROM unique to each PMC module.
Software support (TPMC501-SW-xx) is available for
different operating systems.