MAX1147BCUP+;MAX1147BEUP+;MAX1149BEUP+;MAX1148BEUP+;MAX1146BCUP+T;中文规格书,Datasheet资料.pdf

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MAX1147BCUP+;MAX1147BEUP+;MAX1149BEUP+;MAX1148BEUP+;MAX1146BCUP+T;中文规格书,Datasheet资料.pdf

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MAX1147BCUP;MAX1147BEUP;MAX1149BEUP;MAX1148BEUP;MAX1146BCUPT;中文规格书,Datasheet资料

General Description The MAX1146–MAX1149 low-power, 14-bit, multichan- nel, 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 sin- gle-ended/differential operation. The 4-wire serial interface connects directly to SPI?/QSPI?/MICROWIRE? devices without external logic. The serial strobe output (SSTRB) allows conve- nient connection to digital signal processors. The MAX1146–MAX1149 use an internal clock or an exter- nal serial-interface clock to perform successive-approx- imation 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 exter- nal reference from 1.5V to VDD. The MAX1146–MAX1149 provide a hardware shutdown and two software power-down modes. Using the soft- ware power-down modes allows the devices to be pow- ered 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 sup- ply current to under 120μA for quick turn-on. The MAX1146–MAX1149 are available in a 20-pin TSSOP package. Applications Portable Data Logging Data Acquisition Medical Instruments Battery-Powered Instruments Process Control 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 (Po