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DAC7760

更新时间： 2024-11-29 12:54:03
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德州仪器 - TI 转换器
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6页 193K
描述
Single-Channel, 12- and 16-Bit Programmable Current Output and Voltage Output Digital-to-Analog Converter for 4-mA to 20-mA Current Loop Applications

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DAC7760 数据手册

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DAC7760  
DAC8760  
www.ti.com  
SBAS528 –JUNE 2013  
Single-Channel, 12- and 16-Bit Programmable Current Output and Voltage Output  
Digital-to-Analog Converter for 4-mA to 20-mA Current Loop Applications  
Check for Samples: DAC7760, DAC8760  
1
FEATURES  
DESCRIPTION  
The DAC7760 and DAC8760 are low-cost, precision,  
fully-integrated, 12-bit and 16-bit digital-to-analog  
23  
•
Output Current: 4 mA to 20 mA;  
0 mA to 20 mA; 0 mA to 24 mA  
converters  
requirements  
(DACs)  
of  
designed  
industrial  
to  
meet  
the  
•
Voltage Output:  
process  
control  
–
–
0 V to 5 V; 0 V to 10 V; ±5 V; ±10 V  
applications. The output 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 the output can be  
programmed 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; ±11 V  
(10% Overrange)  
•
•
•
•
•
•
•
±0.1% FSR Total Unadjusted Error (TUE) Max  
DNL: ±1 LSB Max  
Simultaneous Voltage and Current Output  
Internal 5-V Reference (10 ppm/°C, max)  
Internal 4.5-V Power-Supply Generator  
HART® Compatible Input  
A user calibration can be performed on the zero and  
gain registers to calibrate the device in the end  
system. The output slew rate is also programmable  
via register. These devices include a power-on-reset  
function to ensure that the device powers 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 output is  
enabled. These devices are implemented with a  
HART signal interface to 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  
Reliability Features:  
–
–
–
–
CRC and Frame Error Check  
Watchdog Timer  
Thermal Alarm  
Open, Compliance Alarm, Short Current  
Limit  
–
On-Chip Fault Alarm  
•
•
Wide Temperature Range: –40°C to +125°C  
both 6-mm  
packages.  
×
6-mm QFN-40 and TSSOP-24  
6-mm × 6-mm QFN-40 and TSSOP-24  
Packages  
RELATED DEVICES  
CURRENT AND  
VOLTAGE OUTPUT  
CURRENT  
OUTPUT  
APPLICATIONS  
RESOLUTION (Bits)  
12  
16  
DAC7760  
DAC8760  
DAC7750  
DAC8750  
•
•
•
•
4-mA to 20-mA Current Loops  
Analog Output Modules  
Programmable Logic Controllers (PLCs)  
Sensors and Transducers  
DVDD  
DVDD-EN  
AVSS  
AVDD  
REFOUT  
REFIN  
HARTIN  
DAC7760  
DAC8760  
Internal  
Current Output Stage  
Reference  
BOOST  
IOUT  
LATCH  
SCLK  
DIN  
DAC Input  
Register  
Pre-  
DAC  
Conditioning  
Current  
ALARM  
Source  
Thermal  
SDO  
Shutdown  
IGAIN  
IENABLE  
ISET-R  
User Calibration  
Gain/Offset  
Register  
Voltage Output Stage  
+VSENSE  
CLR  
VOUT  
Slew Rate  
Control  
CLR-SEL  
VGAIN  
–VSENSE  
VENABLE  
Watchdog  
Timer  
CMP  
GND  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
3
HART is a registered trademark of the HART Communication Foundation.  
All other trademarks are the property of their respective owners.  
PRODUCT PREVIEW information concerns products in the  
formative or design phase of development. Characteristic data and  
other specifications are design goals. Texas Instruments reserves  
the right to change or discontinue these products without notice.  
Copyright © 2013, Texas Instruments Incorporated  
123456

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