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MAX1236, MAX1237, MAX1238, MAX1239

2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs

Overview

Technical Documents

Ordering Info

Status

Part Number	Status
MAX1236	Active: In Production.
MAX1236K	This product is No Longer Available.
MAX1236L	This product is No Longer Available.
MAX1236M	This product is No Longer Available.
MAX1237	Active: In Production.
MAX1237K	This product is No Longer Available.
MAX1237L	This product is No Longer Available.
MAX1237M	This product is No Longer Available.
MAX1238	Active: In Production.
MAX1238K	This product is No Longer Available.
MAX1238L	This product is No Longer Available.
MAX1238M	This product is No Longer Available.
MAX1239	Active: In Production.
MAX1239K	Active: In Production.
MAX1239L	This product is No Longer Available.
MAX1239M	This product is No Longer Available.

Description

The MAX1236–MAX1239 low-power, 12-bit, multichannel analog-to-digital converters (ADCs) feature internal track/hold (T/H), voltage reference, clock, and an I²C-compatible 2-wire serial interface. These devices operate from a single supply of 2.7V to 3.6V (MAX1237/MAX1239) or 4.5V to 5.5V (MAX1236/MAX1238) and require only 670µA at the maximum sampling rate of 94.4ksps. Supply current falls below 230µA for sampling rates under 46ksps. AutoShutdown™ powers down the devices between conversions, reducing supply current to less than 1µA at low throughput rates. The MAX1236/MAX1237 have four analog input channels each, while the MAX1238/MAX1239 have 12 analog input channels each. The fully differential analog inputs are software configurable for unipolar or bipolar, and single-ended or differential operation.

The full-scale analog input range is determined by the internal reference or by an externally applied reference voltage ranging from 1V to V_DD. The MAX1237/MAX1239 feature a 2.048V internal reference and the MAX1236/MAX1238 feature a 4.096V internal reference. The MAX1236/MAX1237 are available in an 8-pin µMAX® package. The MAX1238/MAX1239 are available in a 16-pin QSOP package. The MAX1236–MAX1239 are guaranteed over the extended temperature range (-40°C to +85°C). For pin-compatible 10-bit parts, refer to the MAX1136–MAX1139 data sheet. For pin-compatible 8-bit parts, refer to the MAX1036–MAX1039 data sheet.

Data Sheet

Download	Rev 7	(PDF, 380kB)
E-Mail

An evaluation kit is available: MAX1236EVKIT MAX1238EVKIT

Key Features

High-Speed I²C-Compatible Serial Interface
- 400kHz Fast Mode
- 1.7MHz High-Speed Mode
Single-Supply
- 2.7V to 3.6V (MAX1237/MAX1239)
- 4.5V to 5.5V (MAX1236/MAX1238)
Internal Reference
- 2.048V (MAX1237/MAX1239)
- 4.096V (MAX1236/MAX1238)
External Reference: 1V to V_DD
Internal Clock
4-Channel Single-Ended or 2-Channel Fully Differential (MAX1236/MAX1237)
12-Channel Single-Ended or 6-Channel Fully Differential (MAX1238/MAX1239)
Internal FIFO with Channel-Scan Mode
Low Power
- 670µA at 94.4ksps
- 230µA at 40ksps
- 60µA at 10ksps
- 6µA at 1ksps
- 0.5µA in Power-Down Mode
Software-Configurable Unipolar/Bipolar
Small Packages
- 8-Pin µMAX (MAX1236/MAX1237)
- 16-Pin QSOP (MAX1238/MAX1239)

Applications/Uses

Battery-Powered Test Equipment
Handheld Portable Applications
Medical Instruments
Received-Signal-Strength Indicators
Solar-Powered Remote Systems
System Supervision

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)

SNR
(dB)

SINAD
(dB)

THD
(dB)

SFDR
(dB)

DNL
(±LSB)

INL
(±LSB)

Package/Pins

Budgetary Price

ADC

max

nominal

min

max

See Notes

MAX1236

94.4

I²C

Both

4.096

5.5

4.096

2.048

-78

µMAX/8

$5.29 @1k

MAX1237

2.048

3.6

2.048

1.024

µMAX/8

$5.29 @1k

MAX1238

4.096

5.5

4.096

2.048

QSOP/16

$5.76 @1k

MAX1239

2.048

3.6

2.048

1.024

QSOP/16

$5.76 @1k

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

Typical Operating Circuit

Application Notes

Application Note 1159		Level Translators For SPI™ and I²C Bus Signals
Application Note 3775		Design Considerations for a Low-Cost Sensor and A/D Interface
Application Note 4318		High-Speed I²C for the MAX1239 ADC Using the MAXQ2000 Microcontroller

Product Guides

Signal Chain (PDF)

Reliability Reports

Reliability Report:	MAX1236.pdf MAX1237.pdf MAX1238.pdf MAX1239.pdf
Show FIT data for:
Request Reliability Report for:

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Devices: 51-66 / 66

<-- Previous 1 2 Next -->

Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1239EEE+T			Active		QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1239EEE-T			Active		QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1239EEE/GH9			Active		QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1239EEE/GH9-T			Active		QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1239KEEE			Active		QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1239KEEE+			Active		QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1239KEEE+T			Active		QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1239KEEE-T			Active		QSOP;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1239LEEE		N/A	No Longer Available	MAX1239EEE+	QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1239LEEE+		N/A	No Longer Available	MAX1239EEE+	QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1239LEEE+T		N/A	No Longer Available	MAX1239EEE+	QSOP;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1239LEEE-T		N/A	No Longer Available	MAX1239EEE+	QSOP;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1239MEEE		N/A	No Longer Available	MAX1239EEE+	QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1239MEEE+		N/A	No Longer Available	MAX1239EEE+	QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1239MEEE+T		N/A	No Longer Available	MAX1239EEE+	QSOP;16 pin Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX1239MEEE-T		N/A	No Longer Available	MAX1239EEE+	QSOP;16 pin;30.9 mm² Outline Drawing:21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16-4*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis

Devices: 51-66 / 66

<-- Previous 1 2 Next -->

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.

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Evaluation Kits

MAX1236EVKIT	Evaluation Kit for the MAX1236
MAX1238EVKIT	Evaluation Kit for the MAX1238

Products with Similar Part Numbers

MAX1238EVKIT	Evaluation Kit for the MAX1238
MAX1236EVKIT	Evaluation Kit for the MAX1236

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-2333 Rev 7; 2010-08-19
This page last modified: 2011-04-04

2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs

Status

Description

Data Sheet

Key Features

Applications/Uses

Key Specifications:

Diagram

Application Notes

Product Guides

Reliability Reports

Software/Models

Ordering Information

Similar Products by Function

Evaluation Kits

Products with Similar Part Numbers

Didn't Find What You Need?

Information Index

Overview

Technical Documents

Ordering Info

Related Products