描述 Description

General Description
The ADC1205 and ADC1225 are CMOS, 12-bit plus sign successive approximation A/D converters. The 24-pin ADC1205 outputs the 13-bit data result in two 8-bit bytes, formatted high-byte first with sign extended. The 28-pin ADC1225 outputs a 13-bit word in parallel for direct interface to a 16-bit data bus. Negative numbers are represented in 2’s complement data format. All digital signals are fully TTL and MOS compatible.
A unipolar input (0V to 5V) can be accommodated with a single 5V supply, while a bipolar input (-5V to +5V) requires the addition of a 5V negative supply.
The ADC1205C and ADC1225C have a maximum non-linearity of 0.0224% of Full Scale.

特性 Features

■ Compatible with all μPs
■ True differential analog voltage inputs
■ 0V to 5V analog voltage range with single 5V supply
■ TTL/MOS input/output compatible
■ Low power—25 mW max
■ Standard 24-pin or 28-pin DIP