User`s guide

4 • Introduction

1.3 Specifications

Analog Input (A/D)

• Converter: B.B. ADS7805 / ADS7804 or equivalents, successive

approximation type

• Resolution: 12-bit /16bits

• Input Channels: 16 single-ended

• Analog Signal Input Range: (Software controlled)

Bipolar: ±10V, ± 5V, ±2.5V, ±1.25V, ±0.625V

• Conversion Time: 8 µ sec

• Over-voltage protection: Continuous ± 35V maximum

• Accuracy:

GAIN = 1, 2

0.01% of FSR ±1 LSB

GAIN = 4, 8

0.02% of FSR ±1 LSB

GAIN = 16

0.04% of FSR ±1 LSB

• Input Impedance: 10 MΩ

• Trigger Mode: Software, Timer Pacer, and External trigger

• Data Transfer: Pooling, Interrupt, FIFO half-full Interrupt

• Data Throughput: 110KHz (maximum)

• FIFO Depth: 1024 samples

Analog output (D/A)

• Number of Channel: 1

• Resolution: 12-bit

• Output Range: jumper selectable

P Unipolar: 0~10V

P Bipolar: -10V~+10V

• Converter: DAC7541 or equivalent, monolithic multiplying

• Settling Time: 30 µ sec

• Linearity: ±1/2 bit LSB

• Output driving capability: ±5mA max.