General Description

The MAX196/MAX198 multirange, 12-bit data-acquisition systems (DAS) require only a single +5V supply for operation, yet convert analog signals at their inputs up to ±10V (MAX196) and ±4V (MAX198). These systems provide six analog input channels that are indepen dently software programmable for a variety of ranges:

±10V, ±5V, 0V to +10V, and 0V to +5V for the MAX196; ±VREF, ±VREF/2, 0V to +VREF, and 0V to +VREF/2 for the MAX198. This range switching increases the effective dynamic range to 14 bits and provides the flexibility to interface ±12V, ±15V, and 4mA to 20mA powered sensors to a single +5V system. In addition, these converters are fault protected to ±16.5V; a fault condition on any channel will notaffect the conversion result of the selected channel.

Other features include a 5MHz bandwidth track/hold, 100ksps throughput rate, software-selectable internal/external clock, internal/external acquisition control, 12-bit parallel interface, and internal 4.096V or external reference.

特性 Features

? 12-Bit Resolution, 1/2LSB Linearity

? Single +5V Supply Operation

? Software-Selectable Input Ranges:

±10V, ±5V, 0V to +10V, 0V to +5V (MAX196)

±VREF, ±VREF/2, 0V to +VREF, 0V to +VREF/2

(MAX198)

? Internal 4.096V or External Reference

? Fault-Protected Input Multiplexer

? 6 Analog Input Channels

? 6μs Conversion Time, 100ksps Sampling Rate

? Internal or External Acquisition Control

? Two Power-Down Modes

? Internal or External Clock

Applications

Industrial-Control Systems

Robotics

Data-Acquisition Systems

Automatic Testing Systems

Medical Instruments

Telecommunications