400ksps/300ksps, Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference

 

Part Number	Replacement	Explanation

Description

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The MAX1084/MAX1085 10-bit analog-to-digital converters (ADCs) combine a high-bandwidth track/hold, a serial interface with high conversion speed, an internal +2.5V reference, and low power consumption. The MAX1084 operates from a single +4.5V to +5.5V supply; the MAX1085 operates from a single +2.7V to +3.6V supply.

The 3-wire serial interface connects directly to SPI™/QSPI™/MICROWIRE™ devices without external logic. The devices use an external serial-interface clock to perform successive-approximation analog-to-digital conversions.

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 MAX1084/MAX1085 are available in 8-pin SO packages.

These devices are pin-compatible, higher-speed versions of the MAX1242/MAX1243; for more information, refer to the respective data sheets.

MAX1084, MAX1084A, MAX1084B, MAX1085, MAX1085A, MAX1085B: Typical Operating Circuit Enlarge+

Key Features

• Single-Supply Operation
  • +4.5V to +5.5V (MAX1084)
  • +2.7V to +3.6V (MAX1085)
• 10-Bit Resolution
• 400ksps Sampling Rate (MAX1084)
• Internal Track/Hold
• Internal +2.5V Reference
• Low Power: 2.5mA (400ksps)
• SPI/QSPI/MICROWIRE 3-Wire Serial Interface
• Pin-Compatible, High-Speed Upgrade to MAX1242/MAX1243
• 8-Pin SO Package

Applications/Uses

• Battery-Powered Applications
• Data Acquisition
• Medical Instruments
• Pen Digitizers
• Portable Data Logging
• Process Control