DAC7750 Series

12-bit, single-channel, programmable current output DAC for 4-20mA current loop applications

Catalog

12-bit, single-channel, programmable current output DAC for 4-20mA current loop applications

Part	Differential Output	Reference Type	Output Type	Number of Bits	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Architecture	Data Interface	Package / Case	Package / Case	INL/DNL (LSB)	Voltage - Supply, Analog [Min]	Voltage - Supply, Analog [Max]	Mounting Type	Supplier Device Package	Settling Time	Utilized IC / Part	DAC Type	Supplied Contents	Number of DAC's
Texas Instruments DAC7750IPWPR		External Internal	Current - Buffered	12 bits	125 °C	-40 °C	5.5 V	2.7 V	String DAC	DSP SPI	0.173 in 4.4 mm	24-PowerTSSOP	- ±1	10 V	36 V	Surface Mount	24-HTSSOP	25 µs
Texas Instruments DAC7750EVM				12 bits						SPI								10 µs	DAC7750	Current	Board(s) Cable(s)	1

Catalog

12-bit, single-channel, programmable current output DAC for 4-20mA current loop applications

Key Features

• Current output options:0 mA to 24 mA4 mA to 20 mA0 mA to 20 mA±0.1% FSR typical total unadjusted error (TUE)DNL: ±1 LSB maximumMaximum loop compliance voltage: AVDD – 2 VInternal 5-V reference: 10 ppm/°C (maximum)Internal 4.6-V power-supply outputCRC frame error checkWatchdog timerThermal alarmOpen-circuit alarmPins to monitor output currentOn-chip fault alarmUser-calibration for offset and gainWide temperature range: –40°C to +125°CPackages: 6-mm × 6-mm 40-pin VQFN and 24-pin HTSSOPCurrent output options:0 mA to 24 mA4 mA to 20 mA0 mA to 20 mA±0.1% FSR typical total unadjusted error (TUE)DNL: ±1 LSB maximumMaximum loop compliance voltage: AVDD – 2 VInternal 5-V reference: 10 ppm/°C (maximum)Internal 4.6-V power-supply outputCRC frame error checkWatchdog timerThermal alarmOpen-circuit alarmPins to monitor output currentOn-chip fault alarmUser-calibration for offset and gainWide temperature range: –40°C to +125°CPackages: 6-mm × 6-mm 40-pin VQFN and 24-pin HTSSOP

Description

The DAC7750 and DAC8750 (DACx750) are low-cost, precision, fully-integrated, 12-bit and 16-bit digital-to-analog converters (DACs) designed to meet the requirements of industrial process-control applications. These devices can be programmed as a current output with ranges of 4 mA to 20 mA, 0 mA to 20 mA, or 0 mA to 24 mA. The DACx750 include reliability features such as CRC error checking on the SPI frame, a watchdog timer, an open circuit, compliance voltage, and thermal alarm. In addition, the output current can be monitored by accessing an internal precision resistor. These devices include a power-on-reset function designed to power up the device in a known state (IOUT is disabled and in a Hi-Z state). The CLR pin sets the current output to the low end of the range if the output is enabled. Program the zero and gain registers to digitally calibrate the device in the end system. The output slew rate is also programmable by register. These devices can superimpose an external HART signal on the current output, and operate with a 10-V to 36-V supply. The DAC7750 and DAC8750 (DACx750) are low-cost, precision, fully-integrated, 12-bit and 16-bit digital-to-analog converters (DACs) designed to meet the requirements of industrial process-control applications. These devices can be programmed as a current output with ranges of 4 mA to 20 mA, 0 mA to 20 mA, or 0 mA to 24 mA. The DACx750 include reliability features such as CRC error checking on the SPI frame, a watchdog timer, an open circuit, compliance voltage, and thermal alarm. In addition, the output current can be monitored by accessing an internal precision resistor. These devices include a power-on-reset function designed to power up the device in a known state (IOUT is disabled and in a Hi-Z state). The CLR pin sets the current output to the low end of the range if the output is enabled. Program the zero and gain registers to digitally calibrate the device in the end system. The output slew rate is also programmable by register. These devices can superimpose an external HART signal on the current output, and operate with a 10-V to 36-V supply.