• 简体中文
• English

MAX144：+2.7V, Low-Power, 2-Channel, 108ksps, Serial 12-Bit ADCs in 8-Pin µMAX

The MAX144/MAX145 low-power, 12-bit analog-to-digital converters (ADCs) are available in 8-pin µMAX® and DIP packages. Both devices operate with a single +2.7V to +5.25V supply and feature a 7.4µs successive- approximation ADC, automatic power-down, fast wake-up (2.5µs), an on-chip clock, and a high-speed, 3-wire serial interface. Power consumption is only 3.2mW (VDD = +3.6V) at the maximum sampling rate of 108ksps. At slower throughput rates, the automatic shutdown (0.2µA) further reduces power consumption. The MAX144 provides 2-channel, single-ended operation and accepts input signals from 0 to VREF. The MAX145 accepts pseudo-differential inputs ranging from 0 to VREF. An external clock accesses data-through the 3-wire serial interface, which is SPI™, QSPI™, and MICROWIRE™-compatible. Excellent dynamic performance and low power, combined with ease of use and small package size, make these converters ideal for battery-powered and data-acquisition applications, or for other circuits with demanding power-consumption and space requirements. For pin-compatible 10-bit ADCs, see the MAX157 and MAX159 data sheets.

Key Features Single-Supply Operation (+2.7V to +5.25V) Two Single-Ended Channels (MAX144) One Pseudo-Differential Channel (MAX145) Low Power 0.9mA (108ksps, +3V Supply) 100µA (10ksps, +3V Supply) 10µA (1ksps, +3V Supply) 0.2µA (Power-Down Mode) Internal Track/Hold 108ksps Sampling Rate SPI/QSPI/MICROWIRE-Compatible 3-Wire Serial Interface Space-Saving 8-Pin µMAX Package Pin-Compatible 10-Bit Versions Available

MAX144, MAX145: Pin Configuration Applications/Uses Battery-Powered Applications Instrumentation Isolated Data Acquisition Medical Instruments Portable Data Logging Process Control Monitoring System Supervision Test Equipment

DataSheet

Parametrics

Quality and Environmental Data

• MAX144.pdf

Related Products

• MAX1329：12-/16-Bit DAS with ADC, DACs, DPIOs, APIOs, Reference, Voltage Monitors, and Temp Sensor
• MAX1393：1.5V to 3.6V, 312.5ksps, 1-Channel True-Differential/2-Channel Single-Ended, 12-Bit, SAR ADCs
• MAX1288：150ksps, 12-Bit, 2-Channel Single-Ended, and 1-Channel True-Differential ADCs
• MAX1284：400ksps/300ksps, Single-Supply, Low-Power, Serial 12-Bit ADCs with Internal Reference
• MAX157：+2.7V, Low-Power, 2-Channel, 108ksps, Serial 10-Bit ADCs in 8-Pin µMAX
• MAX159：+2.7V, Low-Power, 2-Channel, 108ksps, Serial 10-Bit ADCs in 8-Pin µMAX
• MAX1330：12-/16-Bit DAS with ADC, DAC, DPIOs, APIOs, Reference, Voltage Monitors, and Temp Sensor

Ordering Information