MAX196, MAX198 6通道、多量程、5V、12位DAS，带有12位总线接口和故障保护

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概述

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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 independently software programmable for a variety of ranges: ±10V, ±5V, 0V to +10V, and 0V to +5V for the MAX196; ±V_REF, ±V_REF/2, 0V to +V_REF, and 0V to +V_REF/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 not affect 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.

Two programmable power-down modes (STBYPD, FULLPD) provide low-current shutdown between conversions. In STBYPD mode, the reference buffer remains active, eliminating start-up delays.

The MAX196/MAX198 employ a standard microprocessor (µP) interface. A three-state data I/O port is configured to operate with 16-bit data buses, and data-access and bus-release timing specifications are compatible with most popular µPs. All logic inputs and outputs are TTL/CMOS compatible.

These devices are available in 28-pin DIP, wide SO, SSOP (55% smaller in area than wide SO), and ceramic SB packages. For 8+4 bus interface, see the MAX197 and the MAX199 data sheets. An evaluation kit is available (MAX196EVkit-DIP).

关键特性

应用/使用

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

	自动测试设备(ATE)
	数据采集
	工业控制系统
	医疗仪器
	机器人技术
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Key Specifications: Precision ADCs (< 5Msps)

Part Number

ADC Resolution (Bits)

Input Channels

Conv. Rate (ksps)

Max. Conv. Time (µs)

Data Bus (Bits)

Ref. (V)

Input Range (V)

Diff. In

Supply Voltage (V)

Typ. Supply Current (mA)

Typ. Power (mW)

Low Power Mode

Standby Mode

EV-Kit

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^**

MAX196

100

µP/12

Ext
Int +4.096

±10
±5
10
5

Yes

DICE SALES/0
PDIP/28
SOIC/28
SSOP/28

-40 to +85
-55 to +125
0 to +70

$9.90 @ 1k

MAX198

$9.90 @ 1k

See All Precision ADCs (< 5Msps) (301)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.