TC7136A

Supply Voltage (V+ to V-) ....................................... 15V
Analog Input Voltage (Either Input) (Note 1)... V+ to VReference
Input Voltage (Either Input)............ V+ to VClock
Input ..............................................................TEST to V+
Package Power Dissipation (TA  70°C) (Note 2):
Plastic DIP ............................................................1.23W
Plastic Quad Flat Package ....................................1.00W
PLCC ....................................................................1.23W
Operating Temperature Range:
C Devices................................................ 0°C to +70°C
I Devices .............................................. -25°C to +85°C
Storage Temperature Range.............. -65°C to +150°C

The TC7136 and TC7136A are low power, 3-1/2 digit with liquid crystal display (LCD) drivers and analog-todigital
converters. These devices incorporate an "integrator output zero" phase, which enables over range recovery. The performance of existing TC7126, TC7126A and ICL7126 based systems may be upgraded with minor changes to external, passivecomponents.

The TC7136A has an improved internal zener reference voltage circuit which maintains the analog common temperature drift to 35ppm/°C (typical) and 75ppm/°C (maximum). This represents an improvement of two to four times over similar 3-1/2 digit converters. The costly, space consuming external reference source may be removed.