MAX1146BCUP
数据手册.pdf多通道,真差分,串行, 14位ADC Multichannel, True-Differential, Serial, 14-Bit ADCs
General Description
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-approx-imation analog-to-digital conversions.
Features
♦ 8-Channel Single-Ended or 4-Channel Differential Inputs MAX1148/MAX1149
♦ 4-Channel Single-Ended or 2-Channel Differential Inputs MAX1146/MAX1147
♦ Internal Multiplexer and T/H
♦ Single-Supply Operation
4.75V to 5.25V Supply MAX1146/MAX1148
2.7V to 3.6V Supply MAX1147/MAX1149
♦ Internal Reference
+4.096V MAX1146/MAX1148
+2.500V MAX1147/MAX1149
♦ 116ksps Sampling Rate
♦ Low Power
1.1mA 116ksps
120µA 10ksps
12µA 1ksps
300nA Power-Down Mode
♦ SPI-/QSPI-/MICROWIRE Compatible
♦ 20-Pin TSSOP
Applications
Portable Data Logging
Data Acquisition
Medical Instruments
Battery-Powered Instruments
Process Control