PMC341: Analog Input Module, Simultaneous Sample & Hold

PMC341 modules provide fast, high resolution, simultaneous A/D conversion of eight channels.

These modules have sixteen analog inputs which are sampled as two eight-channel banks. Eight A/D converters (ADCs) permit simultaneous conversion of all eight channels in a bank. All 16 channels share two generous 512-sample memory buffers. Conversion of each bank requires only 8µS, and all 16 channels can be sampled in just 16µs.

Flexible configuration options give you extensive control over the conversion process. The channels or bank to be converted, timing, scan mode, and other parameters are user-programmable. Interrupt support adds further control to interrupt upon a programmable threshold when the memory is full.

Specifications

Analog Inputs

Input configuration: 16 differential.
A/D resolution: 14 bits.
Input range: ±10V.
Data sample memory: 512 sample FIFO buffer.
Max. throughput rate: Eight channels can be simultaneously acquired.
One channel: 125KHz (8μS/conversion)
8 channels (same bank): 1MHz (8μS/8 channels)
16 channels (high & low banks): 1MHz (16μS/16 ch. at maximum 2.2K ohm source resistance).
A/D triggers: Internal timer, external, and software.
System accuracy: 2.4 LSB (0.014%).
Data format: Binary two’s compliment.
Input overvoltage protection: ±25V (power on), ±40V (power off).
Common mode rejection ratio (60Hz): 96dB typical.
Channel-to-channel rejection ratio (60Hz): 96dB typical.

PMC Compliance

Conforms to PCI Local Bus Specification, Revision 2.2 and CMC/PMC Specification, P1386.1.
Electrical/Mechanical Interface: Single-Width Module.
32-bit PCI Target: Implemented by Altera FPGA.
4K Memory Space Required: One Base Address Register.
Signaling: 5V Compliant, 3.3V Tolerant.
Interrupts (INTA#): Interrupt A is used to request an interrupt.
Burst Read of Memory Buffer: 3 PCI Clock Cycles per sample read.
Register Access Times: 8 PCI clock cycles, typical.

Environmental

Operating temperature: 0 to 70°C (PMC341) or -40 to 85°C (PMC341E model)
Storage temperature: -55 to 100°C (all models).
Relative humidity: 5 to 95% non-condensing.
Power: 100mA at+5V. 15mA at +12V. -10mA at -12V.
MTBF: 2,943,878 hrs. at 25°C, MIL-HDBK-217F, notice 2