TC7109A

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. The improved Voh source current TC7109A has features that make it an attractive per-channel alternative to analog multiplexing for many data acquisition applications. These features include typical input bias current of 1pA, drift of less than 1 µV/°C, input noise typically 15 µVp-p, and auto-zero. True differential input and reference allow measurement of bridge-type transducers such as load cells, strain gauges, and temperature transducers. In the handshake mode, the TC7109A will operate with industry-standard UARTs in controlling serial data transmission - ideal for remote data logging. The TC7109A has improved overrange recovery performance and higher output drive capability than the TC7109.

Features
  • Zero-Integrator Cycle for Fast Recovery from Input Overloads
  • Eliminates Cross-Talk in Multiplexed Systems
  • 12-Bit Plus Sign Integrating A/D Converter with Overrange Indication
  • True Differential Signal Input and Differential Reference Input
  • Low Noise: 15µVp-p Typ.
  • Input Current: 1pA Typ.
  • No Zero Adjustment Needed
  • UART Handshake Mode for Simple Serial Data Transmission
Parameter
Parameter Name Value Value
Input Voltage Range (V) -1.5 to +1.5 -1.5 to +1.5
Sampling Rate 2 to 10 2 to 10
Input Channels 1 1
Resolution 12 bits plus sign bit 12 bits plus sign bit
Sampling Rate (Conv/sec) 2 to 10 2 to 10
Interface Serial Port Serial Port
Documents
TC7109/A Data SheetData Sheets02/05/2013359KB
Analog & Interface Guide (Volume 2)Brochures10/11/20051067KB
Quick Guide to Microchip Development ToolsBrochures10/15/201411223KB
Analog & Interface Product Selector GuideProduct Line Card03/21/20164116KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
TC7109ACKW44MQFP0C to +70CTRAY12.1410.129.207.677.08
TC7109ACLW44PLCC0C to +70CTUBE11.229.358.507.086.54
TC7109ACLW71344PLCC0C to +70CT/R11.229.358.507.086.54
TC7109ACPL40PDIP0C to +70CTUBE8.587.156.505.425.00
Similar Devices
ProductSupply Voltage Range (V)Input Voltage Range (V)ResolutionPrice5K
TC500-1.5 to +1.5Up to 16 bits$1.62
TC500A-1.5 to +1.5Up to 17 bits$2.25
TC510-1.5 to +1.5Up to 17 bits$2.29
TC514-1.5 to +1.5Up to 17 bits$2.85
TC520A4.5 - 5.5Vss + 1.5 to Vdd - 1.5Up to 17 bits$3.43
TC71094.5 - 5.5-1.5 to +1.512 bits plus sign bit$3.93
TC7109A-1.5 to +1.512 bits plus sign bit$4.64
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
TC7109ACPL6.50000010.60000040PDIP.600inMatte Tine3
TC7109ACLW7132.3755003.40000044PLCC-Matte Tine3
TC7109ACLW2.3755003.70370444PLCC-Matte Tine3
TC7109ACKW0.4854003.89583344MQFP10x10x2mmMatte Tine3
TC7109/A Data Sheet TC7109A
Analog & Interface Guide (Volume 2) MCP23S08
Quick Guide to Microchip Development Tools ENC28J60
Analog & Interface Product Selector Guide ENC624J600