TLC7135A Datasheet | HTCSEMI

HT7135A TLC7135A 4 1/2-DIGIT PRECISION ANALOG-TO-DIGITAL CONVERTERS D Zero Reading for 0-V Input D Precision Null Detection With True Polarity at Zero D 1-p A Typical Input Current D True Differential Input D Multiplexed Binary-Coded-Decimal (BCD) Output D Low Rollover Error: ± 1 Count Max D Control Signals Allow Interfacing With UARTs or Microprocessors D Autoranging Capability With Over- and Under-Range Signals D TTL-patible Outputs D Direct Replacement for Teledyne TSC7135, Intersil ICL7135, Maxim ICL7135, and Siliconix Si7135 D CMOS Technology DW OR N PACKAGE (TOP VIEW) - 1 REF 2 ANLG MON 3 INT OUT 4 AUTO ZERO 5 BUFF OUT 6 Cref - 7 Cref + 8 - 9 IN + 10 VCC + 11 D5 12 B1 13 B2 14 28 UNDER RANGE 27 OVER RANGE 26 STROBE 25 RUN/HOLD 24 DGTL GND 23 POLARITY 22 CLK 21 BUSY 20 D1 19 D2 18 D3 17 D4 16 B8 15 B4 description The HT7135A and TLC7135A converters are manufactured with Htcsemi Instruments highly efficient CMOS technology. These 4 1/2-digit, dual-slope-integrating, analog-to-digital converters (DACs) are designed to provide interfaces to both a microprocessor and a visual display. The digit-drive outputs D1 through D4 and multiplexed binary-coded-decimal outputs B1, B2, B4, and B8 provide an interface for LED or LCD decoder/drivers as well as microprocessors. The HT7135A and TLC7135A offer 50-ppm (one part in 20,000) resolution with a maximum linearity error of one count. The zero error is less than 10 µV and zero drift is less than 0.5 µV/°C. Source-impedance errors are minimized by low input current (less than 10 p A). Rollover error is limited to ± 1 count. The BUSY, STROBE, RUN/HOLD, OVER RANGE, and UNDER RANGE control signals support microprocessor-based measurement systems. The control signals also can support remote data acquisition systems with data transfer through universal asynchronous receiver transmitters (UARTs). The HT7135A and TLC7135A are characterized for operation from 0°C to 70°C. TA 0°C to 70°C AVAILABLE...