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Chapter 5

Specifications

Typical for 25 °C unless otherwise specified.

Specifications in italic text are guaranteed by design.

Power consumption

Table 1. Power consumption specifications

+5 V operating

1.4 A typical, 2.2 A max

+12 V

6 mA typical, 12 mA max

-12 V

4 mA typical, 6 mA max

Analog output

Table 2. Analog output specifications

D/A converter type

AD7837B

Resolution

12-bits

Number of channels

Output ranges

±10 V, ±5 V, ±2.5 V, 0 to 10 V, 0 to 5 V, 0 to 2.5 V.

Each channel independently programmable.

Data transfer

Programmed I/O

Offset error (calibrated)

±(300 µV + ¼ LSB)

Gain error (calibrated)

±(300 µV + ¼ LSB)

Differential nonlinearity

±1 LSB max

Integral nonlinearity

±1 LSB max

Monotonicity

12-bits

D/A gain drift

±2 ppm/°C

D/A offset drift

±5 µV/°C

Throughput

PC dependent

Settling time (20V step to ±½LSB)

6 µs typ, 10µs max

Slew rate

5 V/µs

Current drive

±5 mA

Output short-circuit duration

25 mA indefinite

Output coupling

Output impedance

0.1 Ohms max

Miscellaneous

 Double buffered output latches

 Update DACs individually or simultaneously (software selectable)

 Power up and reset, all DAC's cleared to 0 volts, ±210 mV

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