MAX1248是Maxim美信半导体公司的一款数据转换器和采样-保持电路产品，MAX1248是+2.7V至+5.25V、低功耗、4通道、串行、10位ADC，QSOP-16封装，本站介绍了MAX1248的封装应用图解、特点和优点、功能等，并给出了与MAX1248相关的Maxim元器件型号供参考。
MAX1248 - +2.7V至+5.25V、低功耗、4通道、串行、10位ADC，QSOP-16封装 - 数据转换器和采样-保持电路 - Maxim美信半导体高性能芯片品质 - 美信半导体
The MAX1248/MAX1249 10-bit data-acquisition systems combine a 4-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 their analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.
The 4-wire serial interface connects directly to SPI™/ QSPI™ and MICROWIRE™ devices without external logic. A serial strobe output allows direct connection to TMS320-family digital signal processors. The MAX1248/MAX1249 use either the internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions.
The MAX1248 has an internal 2.5V reference, while the MAX1249 requires an external reference. Both parts have a reference-buffer amplifier with a ±1.5% voltage adjustment range.
These devices provide a hard-wired active-low SHDN pin and a software-selectable power-down, and can be programmed to automatically shut down at the end of a conversion. Accessing the serial interface automatically powers up theMAX1248/MAX1249, and the quick turn-on time allows them to be shut down between all conversions. This technique can cut supply current to under 60µA at reduced sampling rates.
The MAX1248/MAX1249 are available in a 16-pin DIP and a very small QSOP that occupies the same board area as an 8-pin SO.
For 8-channel versions of these devices, see the MAX148/MAX149 datasheet.
