■ 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