The TC835 is a low-power, 4-1/2 digit (0.005% resolution), BCD analog-to-digital converter (ADC) that has been characterized for 200 kHz clock rate operation. The five conversions per second rate is nearly twice as fast as the ICL7135 or TC7135. The TC835 (like the TC7135) does not use the external diode-resistor roll-over error compensation circuits required by the ICL7135. The multiplexed BCD data output is perfect for interfacing to personal computers. The low-cost, greater than 14bit high-resolution, and 100 V sensitivity makes the TC835 exceptionally cost-effective.