Maxim > Products > Analog-to-Digital Converters > MAX197

MAX197

Multi-Range (±10V, ±5V, +10V, +5V), Single +5V, 12-Bit DAS with 8+4 Bus Interface

±17V Fault-Protected ADC with Software-Selectable Input Ranges

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX197 multi-range, 12-bit data-acquisition system (DAS) requires only a single +5V supply for operation, 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: ±10V, ±5V, 0V to +10V, or 0V to +5V. This increases effective dynamic range to 14 bits, and provides the user flexibility to interface 4mA-to-20mA, ±12V, and ±15V powered sensors to a single +5V system. In addition, the converter is overvoltage tolerant to ±16.5V; 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 100ksps throughput rate, software-selectable internal or external clock and acquisition, 8+4 parallel interface, and an internal 4.096V or an external reference.

A hardware active-low 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.

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.

The MAX197 is available in 28-pin DIP, wide SO, SSOP, and ceramic SB packages.

For a different combination of ranges (±4V, ±2V, 0V to 4V, 0V to 2V), refer to the MAX199 data sheet. For 12-bit bus interface, refer to the MAX196 and MAX198 data sheets.

Data Sheet

Download	Rev 2	(PDF, 616kB)
E-Mail

An evaluation kit is available: MAX197EVKIT

Key Features

12-Bit Resolution, 1/2LSB Linearity
Single +5V Operation
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

Applications/Uses

Automated Test Equipment (ATE)
Data Acquisition
Industrial Controls Systems
Medical Instruments
Robotics
Telecommunications

Key Specifications:

Precision ADCs (< 5Msps)

Part Number

Resolution
(bits)

Input Chan.

Conv. Rate
(ksps)

Data Bus
(bits)

Diff/S.E. Input

Internal V_REF
(V)

External V_REF
(V)

Unipolar V_IN
(V)

Bipolar V_IN
(±V)

SINAD
(dB)

THD
(dB)

SFDR
(dB)

DNL
(±LSB)

INL
(±LSB)

Package/Pins

Budgetary Price

ADC

max

nominal

min

max

See Notes

MAX197

100

µP/8

S.E. Only

4.096

2.4

4.18

-85

See All Precision ADCs (< 5Msps) (417)

Pricing 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.

Diagram

Functional Diagram

Application Notes

Application Note 270		Analog-Signal Data Acquisition in Industrial Automation Systems
Reference Design 3450		Positive Analog Feedback Compensates PT100 Transducer

Product Guides

Signal Chain (PDF)

Reliability Reports

Reliability Report:	MAX197.pdf
Show FIT data for:

Software/Models

none

Ordering Information

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Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX197ACAI			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX197ACAI+			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197ACAI+T			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197ACAI-T			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX197ACNI			Active	PDIP(N);28 pin;289.5 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: N28-4*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX197ACNI+			Active	PDIP(N);28 pin;289.5 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: N28+4*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197ACWI			Active	SOIC(W);28 pin;192.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0109 (PDF) Use pkgcode/variation: W28-3*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX197ACWI+			Active	SOIC(W);28 pin;192.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0109 (PDF) Use pkgcode/variation: W28+3*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197ACWI+T			Active	SOIC(W);28 pin;192.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0109 (PDF) Use pkgcode/variation: W28+3*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197ACWI-T			Active	W.SO;28 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX197AEAI			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX197AEAI+			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197AEAI+T			Active	SSOP;28 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX197AEAI-T			Active	SSOP;28 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX197AENI			Active	PDIP(N);28 pin;289.5 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: N28-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX197AENI+			Active	PDIP(N);28 pin;289.5 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: N28+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197AEWI			Active	SOIC(W);28 pin;192.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0109 (PDF) Use pkgcode/variation: W28-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX197AEWI+			Active	SOIC(W);28 pin;192.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0109 (PDF) Use pkgcode/variation: W28+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197AEWI+T			Active	SOIC(W);28 pin;192.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0109 (PDF) Use pkgcode/variation: W28+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197AEWI-T			Active	W.SO;28 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX197AMYI			Active	SDBRZ; Land Pattern: Not Available	-55°C to +125°C	See data sheet
MAX197BC/D			Active	DICE; Land Pattern: Not Available		See data sheet
MAX197BCAI			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX197BCAI+			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197BCAI+T			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197BCAI-T			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX197BCNI			Active	PDIP(N);28 pin;289.5 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: N28-4*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX197BCNI+			Active	PDIP(N);28 pin;289.5 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: N28+4*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197BCWI			Active	SOIC(W);28 pin;192.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0109 (PDF) Use pkgcode/variation: W28-3*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX197BCWI+			Active	SOIC(W);28 pin;192.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0109 (PDF) Use pkgcode/variation: W28+3*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX197BCWI+T			Active	SOIC(W);28 pin;192.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0109 (PDF) Use pkgcode/variation: W28+3*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197BCWI-T			Active	SOIC(W);28 pin;192.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0109 (PDF) Use pkgcode/variation: W28-3*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX197BEAI			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX197BEAI+			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197BEAI+T			Active	SSOP;28 pin;81.6 mm² Outline Drawing:21-0056 (PDF) Land Pattern: 90-0095 (PDF) Use pkgcode/variation: A28+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197BEAI-T			Active	SSOP;28 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX197BENI			Active	PDIP(N);28 pin;289.5 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: N28-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX197BENI+			Active	PDIP(N);28 pin;289.5 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: N28+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197BEWI			Active	SOIC(W);28 pin;192.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0109 (PDF) Use pkgcode/variation: W28-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX197BEWI+			Active	SOIC(W);28 pin;192.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0109 (PDF) Use pkgcode/variation: W28+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX197BEWI+T			Active	SOIC(W);28 pin;192.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0109 (PDF) Use pkgcode/variation: W28+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX197BEWI-T			Active	SOIC(W);28 pin;192.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0109 (PDF) Use pkgcode/variation: W28-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX197BMWI/PR			Active	SOIC(W);28 pin;192.8 mm² Outline Drawing:21-0042 (PDF) Land Pattern: 90-0109 (PDF) Use pkgcode/variation: W28-3*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX197BMWI/PR-T			Active	W.SO; Land Pattern: Not Available	-55°C to +125°C	See data sheet
MAX197BMYI			Active	LGA; Land Pattern: Not Available	-55°C to +125°C	See data sheet
MAX197EVC16-DIP			Active	Land Pattern: Not Available		See data sheet
MAX197EVC32-DIP			Active	Land Pattern: Not Available		See data sheet

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Similar Products by Function

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See All Precision ADCs (< 5Msps) (424 Products)

Evaluation Kits

MAX197EVKIT

Evaluation Kit for the MAX197 and MAX199

Products with Similar Part Numbers