DAC7760 Datasheet, PDF (1/63 Pages) Texas Instruments – Single-Channel, 12- and 16-Bit Programmable Current Output and Voltage Output Digital-to-Analog Converters for 4-mA to 20-mA Current Loop Applications

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DAC7760, DAC8760
SBAS528B – JUNE 2013 – REVISED JUNE 2016
DACx760 Single-Channel, 12- and 16-Bit Programmable Current and Voltage Output
Digital-to-Analog Converters for 4-mA to 20-mA Current Loop Applications
1 Features
•1 Current Output: 4 mA to 20 mA;
0 mA to 20 mA; 0 mA to 24 mA
• Voltage Output:
– 0 V to 5 V; 0 V to 10 V; ±5 V; ±10 V
– 0 V to 5.5 V; 0 V to 11 V; ±5.5 V; ±11 V
(10% Over Range)
• ±0.1% FSR Total Unadjusted Error (TUE)
Maximum
• DNL: ±1 LSB Maximum
• Simultaneous Voltage and Current Output
• Internal 5-V Reference (10 ppm/°C, Maximum)
• Internal 4.6-V Power-Supply Output
• Reliability Features:
– CRC Check and Watchdog Timer
– Thermal Alarm
– Open Alarm, Short Current Limit
• Wide Temperature Range: –40°C to 125°C
• 6-mm × 6-mm 40-Pin VQFN and 24-Pin HTSSOP
Packages
2 Applications
• 4-mA to 20-mA Current Loops
• Analog Output Modules
• Building Automation
• Environment Monitoring
• Programmable Logic Controllers (PLCs)
• Field Sensors and Process Transmitters
3 Description
The DAC7760 and DAC8760 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 a range of 4 mA to 20 mA, 0 mA
to 20 mA, or 0 mA to 24 mA; or as a voltage output
with a range of 0 V to 5 V, 0 V to 10 V, ±5 V, or
±10 V with a 10% overrange (0 V to 5.5 V, 0 V to
11 V, ±5.5 V, or ±11 V). Both current and voltage
outputs can be simultaneously enabled while being
controlled by a single data register.
These devices include a power-on-reset function to
ensure powering up in a known state (both IOUT and
VOUT are disabled and in a Hi-Z state). The CLR
and CLR-SEL pins set the voltage outputs to zero-
scale or midscale, and the current output to the low
end of the range, if the output is enabled. Zero and
gain registers can be programmed 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 can operate with either a
single 10-V to 36-V supply, or dual supplies of up to
±18 V. All versions are available in both 6-mm ×
6-mm 40-pin VQFN and 24-pin HTSSOP packages.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DACx760
HTSSOP (24)
VQFN (40)
7.80 mm × 4.40 mm
6.00 mm × 6.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
DVDD DVDD-EN
DACx760
LATCH
SCLK
DIN
SDO
CLR
CLR-SEL
Block Diagram
REFOUT REFIN
HART-IN
AVSS AVDD
Internal
Reference
Current Output Stage
DAC Input
Register
Thermal
Alarm
User Calibration
Gain/Offset
Register
DAC
Pre-
Conditioning
I_GAIN
Current
Source
I_ENABLE
Voltage Output Stage
Slew Rate
Control
Watchdog
Timer
V_GAIN
V_ENABLE
BOOST
IOUT
ALARM
ISET-R
+VSENSE
VOUT
–VSENSE
CMP
GND
Copyright © 2016, Texas Instruments Incorporated
1
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.