The MAX1146–MAX1149 low-power, 14-bit, multichannel,
analog-to-digital converters (ADCs) feature an
internal track/hold (T/H), voltage reference, and clock.
The MAX1146/MAX1148 operate from a single +4.75V
to +5.25V supply, and the MAX1147/MAX1149 operate
from a single +2.7V to +3.6V supply. All analog inputs
are software configurable for unipolar/bipolar and single-ended/differential operation.
The 4-wire serial interface connects directly to
SPI™/QSPI™/MICROWIRE™ devices without external
logic. The serial strobe output (SSTRB) allows convenient
connection to digital signal processors. The
MAX1146–MAX1149 use an internal clock or an external
serial-interface clock to perform successive-approximation
analog-to-digital conversions.
The MAX1146/MAX1148 include an internal +4.096V
reference, while the MAX1147/MAX1149 include an
internal +2.500V reference. All devices accept an external
reference from 1.5V to VDD.
The MAX1146–MAX1149 provide a hardware shutdown
and two software power-down modes. Using the software
power-down modes allows the devices to be powered
down between conversions. When powered down,
accessing the serial interface automatically powers up
the devices. The quick turn-on time allows power-down
between all conversions. This technique reduces supply
current to under 120µA for quick turn-on.
The MAX1146–MAX1149 are available in a 20-pin
TSSOP package.
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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