MAX1240

PRODUCTION

+2.7V, Low-Power, 12-Bit Serial ADCs in 8-Pin SO

Data Sheet (Rev. 5) Product Selection Table
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Overview

  • Single-Supply Operation:
    • +2.7V to +3.6V (MAX1240)
    • +2.7V to +5.25V (MAX1241)
  • 12-Bit Resolution
  • Internal 2.5V Reference (MAX1240)
  • Small Footprint: 8-Pin PDIP/SO Packages
  • Low Power: 3.7µW (73ksps, MAX1240)
    • 3mW (73ksps, MAX1241)
    • 66µW (1ksps, MAX1241)
    • 5µW (power-down mode)
  • Internal Track/Hold
  • SPI/QSPI/MICROWIRE 3-Wire Serial Interface
  • Internal Clock

The MAX1240/MAX1241 low-power, 12-bit analog-to-digital converters (ADCs) are available in 8-pin packages. The MAX1240 operates with a single +2.7V to +3.6V supply, and the MAX1241 operates with a single +2.7V to +5.25V supply. Both devices 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 37mW (VDD = 3V) at the 73ksps maximum sampling speed. A 2µA shutdown mode reduces power at slower throughput rates.

The MAX1240 has an internal 2.5V reference, while the MAX1241 requires an external reference. The MAX1241 accepts signals from 0V to VREF, 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 MAX1240/MAX1241 are available in 8-pin PDIP and SO packages.

Applications

  • Battery-Powered Applications
  • Instrumentation
  • Isolated Data Acquisition
  • Portable Data Logging
  • Process Control
MAX1240
+2.7V, Low-Power, 12-Bit Serial ADCs in 8-Pin SO
MAX1240, MAX1241: Functional Diagram
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Documentation

Data Sheet 1

Reliability Data 1

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Analog to Digital Converters (ADCs) 4
MAX144
PRODUCTION +2.7V, Low-Power, 2-Channel, 108ksps, Serial 12-Bit ADCs in 8-Pin µMAX
MAX145
PRODUCTION +2.7V, Low-Power, 2-Channel, 108ksps, Serial 12-Bit ADCs in 8-Pin µMAX
MAX189
PRODUCTION +5V, Low-Power, 12-Bit Serial ADCs
MAX1272
PRODUCTION Fault-Protected, 12-Bit ADCs with Software-Selectable Input Range
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Evaluation Kits

eval board
schematic 1
MAX1240PMB

Evaluation Kit for the MAX1240/MAX1241

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Features and Benefits

  • 6-Pin PMod-Compatible Connector (SPI)
  • On-Board Voltage Reference (MAX6126)
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Windows XP, Windows 7/8/8.1/10-Compatible Software

Product Details

The MAX1240 evaluation kit (EV kit) demonstrates the MAX1240, low-power, 12-bit serial ADC. The MAX1240 peripheral module (Pmod™) and the USB2PMB2 module form a system, the MAX1240 EV kit. Windows XP, and Windows® 7/8/8.1/10-compatible software provides a user friendly interface that demonstrates features of the MAX1240.

The MAX1240 peripheral module comes installed with the 8-pin SO package, MAX1240ACSA++.

Applications

  • Battery-Powered Applications
  • Instrumentation
  • Isolated Data Acquisition
  • Portable Data Logging
  • Process Control

eval board
schematic 2
MAX1240EVKIT

Evaluation Kit for the MAX1240/MAX1241

Buy Now View Details

Features and Benefits

  • 6-Pin PMod-Compatible Connector (SPI)
  • On-Board Voltage Reference (MAX6126)
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Windows XP, Windows 7/8/8.1/10-Compatible Software

Product Details

The MAX1240 evaluation kit (EV kit) demonstrates the MAX1240, low-power, 12-bit serial ADC. The MAX1240 peripheral module (Pmod™) and the USB2PMB2 module form a system, the MAX1240 EV kit. Windows XP, and Windows® 7/8/8.1/10-compatible software provides a user friendly interface that demonstrates features of the MAX1240.

The MAX1240 peripheral module comes installed with the 8-pin SO package, MAX1240ACSA++.

Applications

  • Battery-Powered Applications
  • Instrumentation
  • Isolated Data Acquisition
  • Portable Data Logging
  • Process Control
MAX1240PMB
Evaluation Kit for the MAX1240/MAX1241
MAX1240EVKIT, MAX1240PMB: Board Photo
MAX1240EVKIT
Evaluation Kit for the MAX1240/MAX1241
MAX1240EVKIT, MAX1240PMB: Board Photo

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