AD5750_09 Datasheet, PDF (1/36 Pages) Analog Devices – Industrial Current/Voltage Output Driver with Programmable Ranges

Industrial Current/Voltage Output Driver
with Programmable Ranges
AD5750/AD5750-1
FEATURES
Current output ranges: 4 mA to 20 mA, 0 mA to 20 mA or
0 mA to 24 mA, ±20 mA, and ±24 mA
±0.03% FSR total unadjusted error (TUE)
±5 ppm/°C typical output drift
Voltage output ranges: 0 V to 5 V, 0 V to 10 V, ±5 V, and ±10 V,
with 20% overrange
±0.02% FSR TUE
±3 ppm/°C typical output drift
Flexible serial digital interface
On-chip output fault detection
PEC error checking
Asynchronous CLEAR function
Flexible power-up condition to 0 V or tristate
Power supply range
AVDD: +12 V (± 10%) to +24 V (± 10%)
AVSS: −12 V (± 10%) to −24 V (± 10%)
Output loop compliance to AVDD − 2.75 V
Temperature range: −40°C to +105°C
32-lead, 5 mm × 5 mm LFCSP package
APPLICATIONS
Process control
Actuator control
PLCs
GENERAL DESCRIPTION
The AD5750/AD5750-1 are single-channel, low cost, precision
voltage/current output drivers with hardware- or software-
programmable output ranges. The software ranges are configured
via an SPI-/MICROWIRE™-compatible serial interface. The
AD5750/AD5750-1 target applications in PLC and industrial
process control. The analog input to the AD5750/AD5750-1
is provided from a low voltage, single-supply digital-to-analog
converter (DAC) and is internally conditioned to provide the
desired output current/voltage range. Analog input ranges available
are 0 V to 2.5 V (AD5750-1) or 0 V to 4.096 V (AD5750).
The output current range is programmable across five current
ranges: 4 mA to 20 mA, 0 mA to 20 mA or 0 mA to 24 mA,
±20 mA, and ±24 mA. An overrange of 2% is available on the
unipolar current ranges.
Voltage output is provided from a separate pin that can
be configured to provide 0 V to 5 V, 0 V to 10 V, ±5 V, or
±10 V output ranges. An overrange of 20% is available on the
voltage ranges.
Analog outputs are short-circuit and open-circuit protected and
can drive capacitive loads of 1 μF and inductive loads of 0.1 H.
The device is specified to operate with a power supply range from
±12 V to ±24 V. Output loop compliance is 0 V to AVDD − 2.75 V.
The flexible serial interface is SPI and MICROWIRE
compatible and can be operated in 3-wire mode to minimize
the digital isolation required in isolated applications. The
interface also features an optional PEC error checking feature
using CRC-8 error checking, useful in industrial environments
where data communication corruption can occur.
The device also includes a power-on reset function, ensuring
that the device powers up in a known state (0 V or tristate),
and an asynchronous CLEAR pin that sets the outputs to zero
scale/midscale voltage output or the low end of the selected
current range.
An HW SELECT pin is used to configure the part for hardware
or software mode on power-up.
Table 1. Related Device
Part Number Description
AD5422
Single-channel, 16-bit, serial input current
source and voltage output DAC
Rev. A
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