TC7109A Datasheet Text
1
TC7109 TC7109A
12-BIT µP-PATIBLE ANALOG-TO-DIGITAL CONVERTERS
Features s Zero-Integrator Cycle for Fast Recovery From
Input Overloads s Eliminates Cross -Talk in Multiplexed Systems s 12-Bit Plus Sign Integrating A/D Converter With
Overrange Indication s Sign Magnitude Coding Format s True Differential Signal Input and Differential
Reference Input s Low Noise ............................................ 15 µVP-P Typ s Input Current .............................................. 1 pA Typ s No Zero Adjustment Needed s TTL-patible, Byte-Organized Tri-State
Outputs s UART Handshake Mode for Simple Serial Data
Transmission
ORDERING INFORMATION PART CODE
A or blank-
TC7109X
Package Code
Package
Temperature Range
CKW
44-Pin PQFP
0°C to +70°C
CLW
44-Pin PLCC
0°C to +70°C
CPL
40-Pin Plastic DIP
0°C to +70°C
IJL
40-Pin CerDIP
- 25°C to +85°C
- The "A" version has a higher IOUT on the digital lines.
GENERAL DESCRIPTION
The TC7109A is a 12-bit plus sign, CMOS low-power analog-to-digital converter (ADC). Only eight passive ponents and a crystal are required to form a plete dual-slope integrating ADC....
