■ DESCRIPTION

The MB88111 is an analog-to-digital converter that converts its analog input to a 10-bit digital value and outputs it as serial data.

The MB88111 employs a successive approximation method for A/D conversion. It has 24 input channels to be A/D converted selectively by setting in an internal register.

Since the MB88111 can input and output 16-bit serial data in synchronization with the clock, it can be easily connected to the serial I/O port in a 16-bit microcontroller.

■ FEATURES

? 24-channel analog input

? RC-type successive approximation system with a sample-and-hole circuit

? 10-bit resolution

? Conversion speed within 50 μs (at a system clock rate of 1 MHz)

? Digitally converted data output from the MSB

? Digitally converted data output as 16-bit serial data

? Clock-synchronous serial transfer system

? Internal extended serial interface

? Capable of triggering A/D conversion through an external pin

? Capable of input through an 8-channel port

? Serial data output format selectable using an external pin

? 10-bit monotonicity

? No missing code

? Power supply voltage ranging from 3.5 to 5.5 V

? Operating temperature ranging from –40 to +50°C

? CMOS process

? Package options of 44-pin QFP and 48-pin SH-DIP