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TC7109ACKWR PDF预览

TC7109ACKWR

更新时间: 2024-11-01 13:14:27
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美国微芯 - MICROCHIP 转换器
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30页 480K
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TC7109ACKWR 数据手册

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TC7109/A  
12-Bit μA-Compatible Analog-to-Digital Converters  
Features:  
General Description:  
• Zero Integrator Cycle for Fast Recovery from  
Input Overloads  
The TC7109A is a 12-bit plus sign, CMOS low power  
Analog-to-Digital Converter (ADC). Only eight passive  
components and a crystal are required to form a  
complete dual slope integrating ADC.  
• Eliminates Cross-Talk in Multiplexed Systems  
• 12-Bit Plus Sign Integrating A/D Converter with  
Over Range Indication  
The improved VOH source current and other TC7109A  
features make it an attractive per-channel alternative to  
analog multiplexing for many data acquisition applica-  
tions. These features include typical input bias current  
of 1pA, drift of less than 1μV/°C, input noise typically  
15μVP-P, and auto-zero. True differential input and ref-  
erence allow measurement of bridge type transducers,  
such as load cells, strain gauges and temperature  
transducers.  
• Sign Magnitude Coding Format  
• True Differential Signal Input and Differential  
Reference Input  
• Low Noise: 15μVP-P Typ.  
• Input Current: 1pA Typ.  
• No Zero Adjustment needed  
• TTL Compatible, Byte Organized Tri-State  
Outputs  
The TC7109A provides a versatile digital interface. In  
the Direct mode, Chip Select and HIGH/LOW byte  
enable control parallel bus interface. In the Handshake  
mode, the TC7109A will operate with industry standard  
UARTs in controlling serial data transmission – ideal for  
remote data logging. Control and monitoring of conver-  
sion timing is provided by the RUN/HOLD input and  
Status output.  
• UART Handshake Mode for simple Serial Data  
Transmissions  
Device Selection Table  
Part Number  
(TC7109X)*  
Temperature  
Range  
Package  
TC7109CKW  
TC7109CLW  
TC7109CPL  
TC7109IJL  
44-Pin PQFP  
44-Pin PLCC  
40-Pin PDIP  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
-25°C to +85°C  
For applications requiring more resolution, see the  
TC500, 15-bit plus sign ADC data sheet. The TC7109A  
has improved over range recovery performance and  
higher output drive capability than the original TC7109.  
All new (or existing) designs should specify the  
TC7109A wherever possible.  
40-Pin CERDIP  
*The “A” version has a higher IOUT on the digital lines.  
© 2006 Microchip Technology Inc.  
DS21456C-page 1  

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