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.