General Description

The MAX1115/MAX1116 low-power, 8-bit, analog-to-digital converters (ADCs) feature an internal track/hold (T/H), voltage reference, VDD monitor, clock, and serial interface. The MAX1115 is specified from +2.7V to +5.5V, and the MAX1116 is specified from +4.5V to +5.5V. Both parts consume only 175µA at 100ksps.

The full-scale analog input range is determined by the internal reference of +2.048V (MAX1115) or +4.096V (MAX1116). The MAX1115/MAX1116 also feature AutoShutdown™ power-down mode which reduces power consumption to <1µA when the device is not in use. The 3-wire serial interface directly connects to SPI™, QSPI™, and MICROWIRE™ devices without external logic. Conversions up to 100ksps are performed using an internal clock.

The MAX1115/MAX1116 are available in an 8-pin SOT23 package with a footprint that is just 30 of an 8-pin SO.

Features

♦ Single Supply

+2.7V to +3.6V (MAX1115)

+4.5V to +5.5V (MAX1116)

♦ Input Voltage Range: 0 to VREF

♦ Internal Track/Hold; 100kHz Sampling Rate

♦ Internal Reference

+2.048V (MAX1115)

+4.096V (MAX1116)

♦ SPI/QSPI/MICROWIRE-Compatible Serial Interface

♦ Small 8-Pin SOT23 Package

♦ Automatic Power-Down

♦ Low Power

175µA at 100ksps

18µA at +3V and 10ksps

1µA in Power-Down Mode

Applications

Low-Power, Hand-Held Portable Devices

System Diagnostics

Battery-Powered Test Equipment

Receive-Signal-Strength Indicators

4mA to 20mA Powered Remote Data-Acquisition Systems