Microchip Technology TC7126
The TC7126A is a 3-1/2 digit CMOS Analog-to-Digital Converter (ADC) containing all the active components necessary to construct a 0.05% resolution measurement system. The TC7126A directly drives a Liquid Crystal Display (LCD), and includes a backplane driver. The TC7126A’s extremely low-power drain and 9V battery operation make it ideal for portable applications.FEATURES
:● Internal Reference with Low Temperature Drift: - TC7126: 80ppm/°C, Typical - TC7126A: 35ppm/°C, Typical
● Zero Reading with Zero Input
● Low Noise: 15VP-P
● High Resolution: 0.05%
● Low Input Leakage Current: 1pA Typ., 10pA Max.
● Precision Null Detectors with True Polarity at Zero
● High-Impedance Differential Input
● Convenient 9V Battery Operation with Low-Power Dissipation: 500W Typ., 900W Max.
APPLICATIONS
:● Thermometry
● Bridge Readouts: Strain Gauges, Load Cells, Null Detectors
● Digital Meters and Panel Meters: - Voltage/Current/Ohms/Power, pH
● Digital Scales, Process Monitors Device Selection Table Package Code Package Temperature Range CPL IPL CKW CLW 40-Pin PDIP 40-Pin PDIP (TC7126 Only) 44-Pin PQFP 44-Pin PLCC 0C to +70C -25C to +85C 0C to +70C 0C to +70C
GENERAL DESCRIPTION
: Seven-segment decoders, digit and polarity drivers, voltage reference, and clock circuit are integrated on-chip. A low-cost, high resolution indicating meter requires only a display, four resistors, and four capacitors.