Maxim > Products > Analog-to-Digital Converters > MAX1242, MAX1243

MAX1242, MAX1243

+2.7V to +5.25V, Low-Power, 10-Bit Serial ADCs in SO-8

Overview

Technical Documents

Ordering Info

Status

Part Number	Status
MAX1242	Active: In Production. See Ordering Information for details.
MAX1243	Active: In Production. See Ordering Information for details.

Description

The MAX1242/MAX1243 are low-power, 10-bit analog-to-digital converters (ADCs) available in 8-pin packages. They operate with a single +2.7V to +5.25V supply and feature a 7.5µs successive-approximation ADC, a fast track/hold (1.5µs), an on-chip clock, and a high-speed, 3-wire serial interface.

Power consumption is only 3mW (V_DD = 3V) at the 73ksps maximum sampling speed. A 2µA shutdown mode reduces power at slower throughput rates.

The MAX1242 has an internal 2.5V reference, while the MAX1243 requires an external reference. The MAX1243 accepts signals from 0V to V_REF, and the reference input range includes the positive supply rail. An external clock accesses data from the 3-wire interface, which connects directly to standard microcontroller I/O ports. The interface is compatible with SPI™, QSPI™, and MICROWIRE™.

Excellent AC characteristics and very low power combined with ease of use and small package size make these converters ideal for remote-sensor and data-acquisition applications, or for other circuits with demanding power consumption and space requirements. The MAX1242/MAX1243 are available in 8-pin DIP and SO packages.

Data Sheet

Download	Rev 2	(PDF, 168kB)
E-Mail

Key Features

+2.7V to +5.25V Single-Supply Operation
10-Bit Resolution
Internal 2.5V Reference (MAX1242)
Small Footprint: 8-Pin DIP and SO Packages
Low Power:
- 3.7mW (73ksps, MAX1242)
- 3mW (73ksps, MAX1243)
- 66µW (1ksps, MAX1243)
- 5µW (power-down mode)
Internal Track/Hold
SPI/QSPI/MICROWIRE 3-Wire Serial Interface
Pin-Compatible 12-Bit Upgrades: MAX1240/MAX1241

Applications/Uses

Isolated Data Acquisition
Portable Data Logging
Process Control Monitoring
Temperature Measurement
Test Equipment

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)

SNR
(dB)

SINAD
(dB)

THD
(dB)

SFDR
(dB)

DNL
(±LSB)

INL
(±LSB)

Package/Pins

Budgetary Price

ADC

max

nominal

min

max

See Notes

MAX1242

SPI

S.E. Only

2.5

5.25

2.5

-70

0.5

MAX1243

See All Precision ADCs (< 5Msps) (423)

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

Product Guides

Signal Chain (PDF)

Reliability Reports

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Ordering Information

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Sample

Devices: 1-50 / 55

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Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1242ACPA			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX1242ACPA+			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1242ACSA			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-5*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX1242ACSA+			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1242ACSA+T			Active	N.SO;8 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
MAX1242ACSA-T			Active	N.SO;8 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
MAX1242AEPA			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1242AEPA+			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1242AESA			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1242AESA+			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+5*	-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
MAX1242AESA+T			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1242AESA-T			Active	N.SO;8 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1242AMJA		N/A	No Longer Available	CDIP(N);8 pin;82.6 mm² Outline Drawing:21-0045 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: J8-2*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX1242BCPA			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX1242BCPA+			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1242BCSA			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-5*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX1242BCSA+			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1242BCSA+T			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1242BCSA-T			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-5*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX1242BEPA			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1242BEPA+			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1242BESA			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1242BESA+			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1242BESA+T			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1242BESA-T			Active	N.SO;8 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1242BESA/V+			Active	N.SO; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1242BESA/V+T			Active	N.SO; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1242BMJA		N/A	No Longer Available	CDIP(N);8 pin;82.6 mm² Outline Drawing:21-0045 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: J8-2*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX1243ACPA			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX1243ACPA+			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8+2*	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
MAX1243ACSA			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-5*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX1243ACSA+			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1243ACSA+T			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1243ACSA-T			Active	N.SO;8 pin Land Pattern: Not Available	0°C to +70°C	See data sheet
MAX1243AEPA			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1243AEPA+			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1243AESA			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1243AESA+			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+5*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1243AESA+T			Active	N.SO;8 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1243AESA-T			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-5*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1243AMJA		N/A	No Longer Available	CDIP(N);8 pin;82.6 mm² Outline Drawing:21-0045 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: J8-2*	-55°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX1243BC/D		N/A	No Longer Available	DICE; Land Pattern: Not Available		See data sheet
MAX1243BCPA			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX1243BCPA+			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1243BCSA			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-5*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX1243BCSA+			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1243BCSA+T			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8+5*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1243BCSA-T			Active	SOIC(N);8 pin;30.9 mm² Outline Drawing:21-0041 (PDF) Land Pattern: 90-0096 (PDF) Use pkgcode/variation: S8-5*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX1243BEPA			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1243BEPA+			Active	PDIP(N);8 pin;79.7 mm² Outline Drawing:21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis