AD5422

Parameter                                                                      Rating
AV_DD to AGND, DGND                                                −0.3V to 48V
AV_SS to AGND, DGND                                                 +0.3 V to −48 V
AV_DD to AVSS                                                            -0.3V to 60V
DV_CC to AGND, DGND                                                −0.3 V to +7 V
Digital Inputs to AGND, DGND                                   −0.3 V to DV_CC + 0.3 V or 7 V (whichever is less)
Digital Outputs to AGND, DGND                                 −0.3 V to DV_CC + 0.3 V or 7V (whichever is less)
REFIN/REFOUT to AGND, DGND                                  −0.3 V to +7 V
V_OUT to AGND, DGND                                                 AV_SS to AVDD
I_OUT to AGND, DGND                                                  −0.3V to AVDD
AGND to DGND                                                           -0.3V to +0.3V
Operating Temperature Range
(TA)
Industrial                                                                  −40 to +851
Storage Temperature Range                                     −65 to +150
Junction Temperature (T_{J max})                                   125
24-Lead TSSOP Package
_JA Thermal Impedance                                               42/W
40-Lead LFCSP Package
_JA Thermal Impedance                                               28/W
Power Dissipation                                                        (T_{J max} T_A)/ _JA
Lead Temperature                                                       JEDEC Industry Standard
Soldering                                                                     J-STD-020

The AD5412/AD5422 is a low-cost, precision, fully integrated 12/16-bit converter offering a programmable current source and programmable voltage output designed to meet the requirements of industrial process control applications.

The output current range of AD5412/AD5422 is programmable to 4mA to 20 mA, 0mA to 20mA or an overrange function of 0mA to 24mA. Voltage output is provided from a separate pin that can be configured to provide 0V to 5V, 0V to 10V, ±5V or ±10V output ranges, an over-range of 10% is available on all ranges. Analog outputs are short and open circuit protected and can drive capacitive loads of 1uF and inductive loads of 1H. The device is specified to operate with a power supply range from 10.8 V to 40 V. Output loop compliance is 0 V to AVDD 2.5 V.

The flexible serial interface of AD5412/AD5422 is SPI and MICROWIRE compatible and can be operated in 3-wire mode to minimize the digital isolation required in isolated applications. The device also includes a power-on-reset function ensuring that the device powers up in a known state and an asynchronous CLEAR pin which sets the outputs to zero-scale / mid-scale voltage output or the low end of the selected current range.

The total output error of AD5412/AD5422 is typically ±0.1% in current mode and ±0.05% in voltage mode.