Datasheet > MAX197

MAX197

更新时间： 2024-12-02 14:57:31

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	604K
描述
多量程(±10V, ±5V, +10V, +5V)、单+5V、12位数DAS，8+4总线接口

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MAX197 数据手册

19-0381; Rev 2; 9/01

Multi-Range (±1ꢀ0, ±±0, +1ꢀ0, +±0),

Single +±0, 12-Bit DAS with 8+4 Bus Interface

_______________General Description

____________________________Features

ꢀ 12-Bit Resolution, 1/2LSB Linearity

ꢀ Single +5V Operation

The MAX197 multi-range, 12-bit data-acquisition sys-

tem (DAS) requires only a single +5V supply for opera-

tion, yet accepts signals at its analog inputs that may

span both above the power-supply rail and below

ground. This system provides 8 analog input channels

that are independently software programmable for a

variety of ranges: 1ꢀV, 5V, ꢀV to +1ꢀV, or ꢀV to +5V.

This increases effective dynamic range to 14 bits, and

provides the user flexibility to interface 4mA-to-2ꢀmA,

12V, and 15V powered sensors to a single +5V sys-

tem. In addition, the converter is overvoltage tolerant to

1ꢁ.5Vꢂ a fault condition on any channel does not

affect the conversion result of the selected channel.

Other features include a 5MHz bandwidth track/hold, a

1ꢀꢀksps throughput rate, software-selectable internal or

external clock and acquisition, 8+4 parallel interface,

and an internal 4.ꢀ9ꢁV or an external reference.

ꢀ Software-Selectable Input Ranges:

10V, 5V, 0V to 10V, 0V to 5V

ꢀ Fault-Protected Input Multiplexer ( 16.5V)

ꢀ 8 Analog Input Channels

ꢀ 6µs Conversion Time, 100ksps Sampling Rate

ꢀ Internal or External Acquisition Control

ꢀ Internal 4.096V or External Reference

ꢀ Two Power-Down Modes

ꢀ Internal or External Clock

______________Ordering Information

PART

TEMP RANGE

ꢀ°C to +7ꢀ°C

PIN-PACKAGE

28 Narrow Plastic DIP

28 Wide SO

MAX197ACNI

MAX197BCNI

MAX197ACWI

MAX197BCWI

MAX197ACAI

MAX197BCAI

MAX197BC/D

A hardware SHDN pin and two programmable power-

down modes (STBYPD, FULLPD) are provided for low-

current shutdown between conversions. In STBYPD

mode, the reference buffer remains active, eliminating

start-up delays.

28 Wide SO

28 SSOP

The MAX197 employs a standard microprocessor (µP)

interface. A three-state data I/O port is configured to

operate with 8-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.

28 SSOP

Dice*

Ordering Information continued at end of data sheet.

*Dice are specified at T = +25°C, DC parameters only.

__________________Pin Configuration

The MAX197 is available in 28-pin DIP, wide SO, SSOP,

and ceramic SB packages.

TOP VIEW

For a different combination of ranges ( 4V, 2V, ꢀV to

4V, ꢀV to 2V), refer to the MAX199 data sheet. For 12-bit

bus interface, refer to the MAX19ꢁ and MAX198 data

sheets.

CLK

28 DGND

REF

REFADJ

INT

HBEN

SHDN

________________________Applications

Industrial-Control Systems

Robotics

MAX197

CH7

CH6

21 CH5

Data-Acquisition Systems

Automatic Testing Systems

Medical Instruments

CH4

CH3

CH2

CH1

D3/D11

D2/D10

D1/D9

Telecommunications

16 CH0

AGND

D0/D8

Functional Diagram appears at end of data sheet.

DIP/SO/SSOP/Ceramic SB

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...16

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与MAX197相关器件

型号	品牌	获取价格	描述	数据表
MAX1970	MAXIM	获取价格	Dual, 180∑ Out-of-Phase, 1.4MHz, 750mA Step-
MAX1970	ADI	获取价格	双路、180°异相、1.4MHz、750mA、降压型调节器，带有POR和RSI/PFO
MAX1970_09	MAXIM	获取价格	Dual, 180° Out-of-Phase, 1.4MHz, 750mA Step-
MAX19700	MAXIM	获取价格	10-Bit, 45Msps, Ultra-Low-Power Analog Front-End
MAX19700ETM	MAXIM	获取价格	暂无描述
MAX19700ETM+	MAXIM	获取价格	Telecom Circuit, 1-Func, 7 X 7 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220, QFN-48
MAX19700ETM+T	MAXIM	获取价格	Telecom Circuit, 1-Func, 7 X 7 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220, QFN-48
MAX19700ETM-T	MAXIM	获取价格	暂无描述
MAX19705	MAXIM	获取价格	10-Bit, 45Msps, Ultra-Low-Power Analog Front-End
MAX19705ETM	ROCHESTER	获取价格	SPECIALTY TELECOM CIRCUIT, QCC48, 7 X 7 MM, 0.80 MM HEIGHT, MO-220, TQFN-48

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