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MAX1283：300ksps/400ksps, Single-Supply, 4-Channel, Serial 12-Bit ADCs with Internal Reference

The MAX1282/MAX1283 12-bit analog-to-digital converters (ADCs) combine a 4-channel analog-input multiplexer, high-bandwidth track/hold (T/H), and serial interface with high conversion speed and low power consumption. The MAX1282 operates from a single +4.5V to +5.5V supply; the MAX1283 operates from a single +2.7V to +3.6V supply. Both devices' analog inputs are software configurable for unipolar/bipolar and single-ended/pseudo-differential operation. The 4-wire serial interface connects directly to SPI™/QSPI™/MICROWIRE™ devices without external logic. A serial strobe output allows direct connection to TMS320-family digital signal processors. The MAX1282/MAX1283 use an external serial-interface clock to perform successive-approximation analog-to-digital conversions. The devices feature an internal +2.5V reference and a reference-buffer amplifier with a ±1.5% voltage-adjustment range. An external reference with a 1V to VDD range may also be used. The MAX1282/MAX1283 provide a hardwired active-low SHDN pin and four software-selectable power modes (normal operation, reduced power (REDP), fast power-down (FASTPD), and full power-down (FULLPD)). These devices can be programmed to automatically shut down at the end of a conversion or to operate with reduced power. When using the power-down modes, accessing the serial interface automatically powers up the devices, and the quick turn-on time allows them to be shut down between all conversions. The MAX1282/MAX1283 are available in 16-pin TSSOP packages.

Key Features 4-Channel Single-Ended or 2-Channel Pseudo-Differential Inputs Internal Multiplexer and Track/Hold Single-Supply Operation +4.5V to +5.5V (MAX1282) +2.7V to +3.6V (MAX1283) Internal +2.5V Reference 400kHz Sampling Rate (MAX1282) Low Power: 2.5mA (400ksps) 1.3mA (REDP) 0.9mA (FASTPD) 2µA (FULLPD) SPI/QSPI/MICROWIRE/TMS320-Compatible 4-Wire Serial Interface Software-Configurable Unipolar or Bipolar Inputs 16-Pin TSSOP Package

MAX1282, MAX1283: Typical Operating Circuit Applications/Uses Battery-Powered Applications Data Acquisition Medical Instruments Pen Digitizers Portable Data Logging Process Control

DataSheet

Parametrics

Design kits & evaluation modules

• MAX1282EVC16
• MAX1282EVKIT

Related Products

• MAX11634：12-Bit, 300ksps ADCs with Differential Track/Hold, and Internal Reference
• MAX11626：12-Bit, 300ksps ADCs with FIFO and Internal Reference
• MAX1346：12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports
• MAX1284：400ksps/300ksps, Single-Supply, Low-Power, Serial 12-Bit ADCs with Internal Reference

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