150ksps, 12-Bit, 2-Channel Single-Ended, and 1-Channel True-Differential ADCs

 

Part Number	Replacement	Explanation

Description

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The MAX1286–MAX1289 are low-cost, micropower, serial output 12-bit analog-to-digital converters (ADCs) available in a tiny 8-pin SOT23 and an 8-pin TDFN. The MAX1286/MAX1288 operate with a single +5V supply. The MAX1287/MAX1289 operate with a single +3V supply. The devices feature a successive-approximation ADC, automatic shutdown, fast wakeup (1.4µs), and a high-speed 3-wire interface. Power consumption is only 0.5mW (V_DD = +2.7V) at the maximum sampling rate of 150ksps. AutoShutdown™ (0.2µA) between conversions results in reduced power consumption at slower throughput rates. The MAX1286/MAX1287 provide 2-channel, single-ended operations and accept input signals from 0 to V_REF. The MAX1288/MAX1289 accept true-differential inputs ranging from 0 to V_REF. Data is accessed using an external clock through the 3-wire SPI™-/QSPI™-/MICROWIRE™-compatible serial interface. Excellent dynamic performance, low power, ease of use, and small package size make these converters ideal for portable battery-powered data-acquisition applications, and for other applications that demand low power consumption and minimal space.

MAX1286, MAX1287, MAX1288, MAX1289: Pin Configuration Enlarge+

Key Features

• Single-Supply Operation
  • +3V (MAX1287/MAX1289)
  • +5V (MAX1286/MAX1288)
• Autoshutdown Between Conversions
• Low Power
  • 245µA at 150ksps
  • 150µA at 100ksps
  • 15µA at 10ksps
  • 2µA at 1ksps
  • 0.2µA in Shutdown
• True-Differential Track/Hold, 150kHz Sampling Rate
• Software-Configurable Unipolar/Bipolar Conversion (MAX1288/MAX1289 Only)
• SPI-/QSPI-/MICROWIRE-Compatible Interface for DSPs and Processors
• Internal Conversion Clock
• 8-Pin SOT23 and 8-Pin TDFN Packages

Applications/Uses

• Flow Meters
• Low-Power Data Acquisition
• Portable Temperature Monitors
• Touch Screens