General Description

The MAX110/MAX111 analog-to-digital converters (ADCs) use an internal auto-calibration technique to achieve 14-bit resolution plus overrange, with no external components. Operating supply current is only 550µA (MAX110) and reduces to 4µA in power-down mode, making these ADCs ideal for high-resolution battery-powered or remote-sensing applications. A fast serial interface simplifies signal routing and opto-isolation, saves microcontroller pins, and offers compatibility with SPI™, QSPI™, and MICROWIRE™. The MAX110 operates with ±5V supplies, and converts differential analog signals in the -3V to +3V range. The MAX111 operates with a single +5V supply and converts differential analog signals in the ±1.5V range, or single ended signals in the 0V to +1.5V range.

Features

♦ Single +5V Supply (MAX111)

♦ Two Differential Input Channels

♦ 14-Bit Resolution Plus Sign and Overrange

♦ 0.03% Linearity (MAX110)

0.05% Linearity (MAX111)

♦ Low Power Consumption:

550µA (MAX110)

640µA (MAX111)

4µA Shutdown Current

♦ Up to 50 Conversions/sec

♦ 50Hz/60Hz Rejection

♦ Auto-Calibration Mode

♦ No External Components Required

♦ 16-Pin DIP/SO, 20-Pin SSOP