HI7133

® UCT TE PROD O DUCT OBSO LE ITUTE PR ICL71x7 T S B U S E ee POSSIBL L71x6, HI7133 s Center at rt IC o p e p se u S ical HI7131 .com/tsc ur T e c hn w.intersil w contact o w r o November 2000 ERSIL 1-888-INT HI7131, HI7133 31/2 Digit, Low Power, High CMRR, LCD/LED Display-Type A/D Converters Description The Intersil HI7131 and HI7133 are 31/2 digit, A/D converters that have been optimized for superior DC Common Mode Rejection (CMRR) when used with a split ±5V supply or a single 9V battery. The HI7131 contains all the necessary active components on a single IC to directly interface an LCD (Liquid Crystal Display). The supply current is under 100µA and is ideally suited for battery operation. The HI7133 contains all the necessary active components on a single IC to directly interface an LED (Light Emitting Diode). The HI7131 and HI7133 feature high accuracy performance like, 120dB of CMRR, auto-zero to less than 10µV of offset, fast recovery from over load, zero drift of less than 1µV/oC, input bias current of 10pA maximum, and rollover error of less than one count. A true differential signal and reference inputs are useful features in all systems, but gives the designer an advantage when measuring load cells, strain gauges and other bridge-type transducers. The HI7131 and HI7133 are supplied in a 40 lead plastic DIP and a 44 lead metric plastic quad flatpack package. Features 120dB CMRR Equal to ±0.01 Count/V of Common Mode Voltage Error Fast Recovery from Input Overran...