AME811R

Analog Microelectronics, Inc. AME811/AME811A/AME811R 3-1/2 Digit A/D Converter - Low Power With HOLD And Differential Reference Inputs n Key Features l 100µV Resolution l High Impedance Differential Inputs l Differential Reference l Drive LCD Directly l Three New Convenient Features (AME811A Only) l Low-Battery Indication l Integration Status Indication l De-Integration Status Indication n General Description The AME811 family are high performance, low power. 3-1/2 digit, dual-slope integrating A/D converters, with on-chip display drivers. The AME811 is designed for a single battery operated system, will drive non-multiplexed LCD display directly. These A/D converters are inherently versatile and accurate. They are immune to the high noise environments. The true differential high impedance inputs and differential reference are very useful for making ratiometric measurement, such as resistance, strain gauge and bridge transducers. The built-in auto-zero feature automatically corrects the system offset without any external adjustments. Low-battery flag, integration and de-integration status flags are three additional features which are available in the 44-pin package, AME811ACKW. n Applications l Digital multimeter l pH meter l Capacitance meter l Thermometer l Digital Panel meter l Photometer n Typical Operating Circuit * For the operating circuit of the reverse-pins version, please refer to pin configuration on page 4 and pin description on page 5 & 6. 0.1 35 34 C REF+...