TC7107A

The TC7107A 3½ digit LED direct-display drive analog-to-digital converters allow existing TC7107 based systems to be upgraded. Each device has a precision reference with a 20ppm/°C max temperature coefficient. This represents a 4 to 7 times improvement over similar 3½ digit converters. Existing TC7107 based systems may be upgraded without changing external passive component values. The TC7107A drives common anode light emitting diode (LED) displays directly with 8mA per segment. A low-cost, high-resolution indicating meter requires only a display, four resistors, and four capacitors. The TC7107A reduces linearity error to less than 1 count. Rollover error (the difference in readings for equal magnitude but opposite polarity input signals) is below ±1 count. High impedance differential inputs offer 1pA leakage current and a 1012 Ohm input impedance. The differential reference input allows ratiometric measurements for ohms or bridge transducer measurements. The 15µVp-p noise performance guarantees a great reading. The auto-zero cycle guarantees a zero display reading with a zero-volts input.

Features
  • Internal Reference with Low Temperature Drift 20ppm/°C Typical
  • 20ppm/°C Typical
  • Drives LED Display Directly
  • Guaranteed Zero Reading with Zero Input
  • Low Noise for Stable Display
  • Auto-Zero Cycle Eliminates Need for Zero Adjustment
  • True Polarity Indication for Precision Null Applications
  • High Impedance CMOS Differential Inputs: 1012 Ohm
  • Differential Reference Inputs Simplify Ratiometric Measurements
  • Low Power Operation: 10mW
Parameter
Parameter Name Value Value
Supply Voltage (V) 5 5
Power (mW) 10 10
Hold Function Yes Yes
Resolution (Digits) 3.5 3.5
Resolution (Counts) 2000 2000
Display Type LED LED
Temp. Range (°C) -25 to 85 -25 to 85
Documents
3-1/2 Digit Analog-to-Digital ConvertersData Sheets02/26/2008482KB
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+
TC7107ACKW44MQFP0C to +70CTRAY6.845.705.184.323.98
TC7107ACKW71344MQFP0C to +70CT/R6.845.705.184.323.98
TC7107ACLW44PLCC0C to +70CTUBE10.969.138.306.926.38
TC7107ACPL40PDIP0C to +70CTUBE4.884.073.703.082.85
TC7107ACPT71344TQFP0C to +70CT/R**********
TC7107AIPL40PDIP-25C to +85CTUBE6.815.685.164.303.97
TC7107AIPT71344TQFP-25C to +85CT/R**********
Similar Devices
ProductDisplay TypeSupply Voltage (V)Resolution (Digits)Price5K
TC7106LCD93.5$2.83
TC7106ALCD93.5$2.80
TC7107LED53.5$2.46
TC7107ALED53.5$2.64
TC7116LCD93.5$3.33
TC7116ALCD93.5$3.56
TC7117LED53$4.75
TC7117ALED53$3.71
TC7126LCD93.5$3.57
TC7126ALCD93.5$4.61
TC7129LCD94.5$7.60
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
TC7107ACPL6.50000010.60000040PDIP.600inMatte Tine3
TC7107AIPL6.50000010.60000040PDIP.600inMatte Tine3
TC7107ACLW2.3755003.70370444PLCC-Matte Tine3
TC7107AILW2.3755003.70370444PLCC-Matte Tine3
TC7107AIPT7130.2733000.74833344TQFP10x10x1mmMatte Tine3
TC7107ACPT7130.2733000.74833344TQFP10x10x1mmMatte Tine3
TC7107ACKW0.4854003.89583344MQFP10x10x2mmMatte Tine3
TC7107ACKW7130.4854001.29666744MQFP10x10x2mmMatte Tine3
TC7107AIKW0.4854003.89583344MQFP10x10x2mmMatte Tine3
TC7107AIKW7130.4854001.29666744MQFP10x10x2mmMatte Tine3
3-1/2 Digit Analog-to-Digital Converters TC7107A
Analog & Interface Guide (Volume 2) MCP23S08
Quick Guide to Microchip Development Tools ENC28J60
Analog & Interface Product Selector Guide ENC624J600