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DAC7750IPWPR.B Datasheet(PDF) 1 Page - Texas Instruments |
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DAC7750IPWPR.B Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 56 page  DACx750 Single-Channel, 12-Bit and 16-Bit Programmable Current Output Digital-to-Analog Converters for 4-mA to 20-mA Current-Loop Applications 1 Features • Current output options: – 0 mA to 24 mA – 4 mA to 20 mA – 0 mA to 20 mA • ±0.1% FSR typical total unadjusted error (TUE) • DNL: ±1 LSB maximum • Maximum loop compliance voltage: AVDD – 2 V • Internal 5-V reference: 10 ppm/°C (maximum) • Internal 4.6-V power-supply output • CRC frame error check • Watchdog timer • Thermal alarm • Open-circuit alarm • Pins to monitor output current • On-chip fault alarm • User-calibration for offset and gain • Wide temperature range: –40°C to +125°C • Packages: 6-mm × 6-mm 40-pin VQFN and 24-pin HTSSOP 2 Applications • Analog output module • CPU (PLC controller) • Flow transmitter • Other sensor transmitter • Actuator • Process analytics (pH, gas, concentration, force and humidity) 3 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. Device Information PART NUMBER PACKAGE(1) BODY SIZE (NOM) DACx750 HTSSOP (24) 7.80 mm × 4.40 mm VQFN (40) 6.00 mm × 6.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. GND DACx750 AVDD DVDD-EN DVDD Slew Rate Control User Calibration Gain/Offset Register DAC Input Register Thermal Alarm Internal Reference REFOUT REFIN HART-IN LATCH SCLK DIN SDO CLR DAC Pre- Conditioning Current Source I ENABLE ISET-R I GAIN Current Output Stage IOUT ALARM BOOST R3-SENSE Watchdog Timer Block Diagram DAC7750, DAC8750 SBAS538D – DECEMBER 2013 – REVISED DECEMBER 2021 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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