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See Technical Specifications

MAX1237EUA+

12 Bit Analog to Digital Converter 2, 4 Input 1 SAR 8-uMAX/uSOP

Manufacturer:

Analog Devices Inc./Maxim Integrated
Mfr.Part #:

MAX1237EUA+
Datasheet:

MAX1237EUA+ Datasheet (PDF)
Number of Bits:

12
Sampling Rate (Per Second):

94.4k
Number of Inputs:

2, 4
Input Type:

Differential, Single Ended
EDA/CAD Models:

Request Free CAD Models for MAX1237EUA+

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MAX1237EUA+ General 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.

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)

Application

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

Specifications

Series	-	Number of Bits	12
Sampling Rate (Per Second)	94.4k	Number of Inputs	2, 4
Input Type	Differential, Single Ended	Data Interface	I²C
Configuration	S/H-ADC	Ratio - S/H:ADC	1:1
Number of A/D Converters	1	Architecture	SAR
Reference Type	External, Internal	Voltage - Supply, Analog	2.7V ~ 3.6V
Voltage - Supply, Digital	2.7V ~ 3.6V	Features	-
Operating Temperature	-40°C ~ 85°C	Mounting Type	Surface Mount
Base Product Number	MAX1237