Maxim Integrated MAX1271BCAI T

Description
The MAX1270/MAX1271 are multirange, 12-bit data acquisition systems (DAS) that require only a single 5V supply for operation. They accept signals at their analog inputs that can span above the power-supply rail and below ground. These systems provide eight analog input channels that are independently software programmable for a variety of ranges:
MAX1270: ±10V, ± 5V, 0 to 10V, 0 to 5V
MAX1271: ±VREF, ±VREF/2, 0 to VREF. 0 to VREF/2
This range switching increases the effective dynamic range to 14 bits and provides the flexibility to interface 4-20mA, ±12V, and 15V powered sensors directly to a single 5V system.
In addition, these converters are fault protected to ±16.5V; a fault condition on any channel will not affect the conversion result of the selected channel. Other features include a 5MHz bandwidth track/hold, software-selectable internal/external clock, 110ksps throughput rate, and internal 4.096V or external reference operation.
The MAX1270/MAX1271 serial interface directly connects to SPI/QSPI and MICROWIRE devices without external logic.
A hardware shutdown input (SHDN) and two software-programmable power-down modes, standby (STBYPD) or full power-down (FULLPD), are provided for low-current shutdown between conversions. In standby mode, the reference buffer remains active, eliminating startup delays.
The MAX1270/MAX1271 are available in 24-pin narrow PDIP or space-saving 28-pin SSOP packages.

Features
12-Bit Resolution, 0.5 LSB Linearity
5V Single-Supply Operation
SPI/QSPI and MICROWIRE-Compatible 3-Wire Interface
Four Software-Selectable Input Ranges
Eight Analog Input Channels
110ksps Sampling Rate
16.5V Overvoltage-Tolerant Input Multiplexer
Internal 4.096V or External Reference
Two Power-Down Modes
Internal or External Clock
24-Pin Narrow PDIP or 28-Pin SSOP Packages

Applications
Industrial Control Systems
Automatic Testing
Data-Acquisition Systems
Robotics
Battery-Powered Instruments
Medical Instruments