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
Applications/Uses
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
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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