Lesson 1 – Analog Modules
91
In the Sampler, the single-ended signal can be captured from the
pins shown in the following table. Only the single-ended input is
available.
In addition to the single-ended input routes, the DC route (at any
one pin (A+, B+, C+, or D+) in the two sampler cores) and loop-
back routes are available in the SPA. For details about these
routes, see “Pin Connections with an Analog Module’s Multiplexer”
on page 99.
All routing is switched by the input multiplexer.
The sample-and-hold amplifier (S/H amplifier) periodically samples
the high speed input signal and holds it until the analog-to-digital
converter converts it into digital data.
For other components in the sampler (input amplifier, ADC, timing
generator, sequencer, waveform memory, and SYNC_DATA pin),
see the description in “High Resolution / High Speed Digitizer” on
page 79. The timing generator feeds the conversion clock to the
ADC and S/H amplifier in the sampler.
NOTE When you use two sampler cores simultaneously, the sequence
program is shared between the two sampler cores, and the sampling
period, start timing, and stop timing of measurement is the same for
both sampler cores, because the sequencer, timing generator, and
trigger input pin are shared. You can use one sampler core only, or
two sampler cores simultaneously by setting the input multiplexer
accordingly.
Input Possible Input Pin in Input Route of SPA
Single-ended input
In core 1 1 input only of 2 inputs:
A+ or B+
4 inputs per module.
2 single-ended inputs
simultaneously by us-
ing core1 and core 2
In core 2 1 input only of 2 inputs:
C+ or D+
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