GENERAL DESCRIPTION
The TC850 is a monolithic CMOS analog-to-digital converter (ADC) with resolution of 15-bits plus sign. It combines a chopper-stabilized buffer and integrator with a unique multiple-slope integration technique that increases conversion speed. The result is 16 times improvement in speed over previous 15-bit, monolithic integrating ADCs (from 2.5 conversions per sec up to 40 per sec). Faster conversion speed is especially welcome in systems with human interface, such as digital scales.

FEATURES
■ 15-bit Resolution Plus Sign Bit
■ Up to 40 Conversions per Second
■ 12 Conversions per Second Guaranteed
■ Integrating ADC Technique
    — Monotonic
    — High Noise Immunity
    — Auto-Zeroed Amplifiers Eliminate Offset Trimming
■ Wide Dynamic Range ...................................... 96dB
■ Low Input Bias Current ................................... 30pA
■ Low Input Noise ........................................... 30µVP-P
■ Sensitivity ....................................................... 100µV
■ Flexible Operational Control
    — Continuous or On-Demand Conversions
    — Data Valid Output
■ Bus Compatible, 3-State Data Outputs
    — 8-Bit Data Bus
    — Simple µP Interface
    — Two Chip Enables
    — Read ADC Result Like Memory
■ ± 5V Power Supply Operation ...................... 20mW
■ 40-Pin Dual-in-Line or 44-Pin PLCC Packages