+2.7V to +5.25V / Low-Power / 8-Channel / Serial 10-Bit ADCs
MAX148/MAX149
19-0464; Rev 5; 1/12
+2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs
General Description
The ...
Description
MAX148/MAX149
19-0464; Rev 5; 1/12
+2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs
General Description
The MAX148/MAX149 10-bit data-acquisition systems combine an 8-channel multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and low power consumption. They operate from a single +2.7V to +5.25V supply, and sample to 133ksps. Both devices’ analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.
The 4-wire serial interface connects directly to SPI/ QSPIK and MICROWIREK devices without external logic. A serial-strobe output allows direct connection to TMS320-family digital signal processors. The MAX148/ MAX149 use either the internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions.
The MAX149 has an internal 2.5V reference, while the MAX148 requires an external reference. Both parts have a reference-buffer amplifier with a Q1.5% vol...
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