Аналого-цифровые преобразователи (АЦП) MAX1249BCPE+

АЦП , высокоскоростной, 10 бит, 133 Квыборок/с, Дифференциальный, Несимметричный, SPI, Однополярный

The MAX1249BCPE+ is a low power, 4-channel, serial 10bit SAR analogue to digital converter (ADC) in 16 pin DIP package. This data acquisition system combines 4-channel multiplexer, high bandwidth track/hold and serial interface with high conversion speed and low power consumption. 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 MAX1249B uses either the internal clock or an external serial interface clock to perform SAR analogue to digital conversions. Accessing the serial interface automatically power-up the MAX1249B and quick turn-on time allows the device to shutdown between all conversions. This technique can cut supply current less than 60µA at reduced sampling rates. It is used in data logging, pen digitizers, data acquisition, battery powered instruments and system supervision applications.

• Supply voltage range from 2.7V to 5.25V
• Operating temperature range from 0°C to 70°C
• Relative accuracy of ±1LSB & DNL of ±1LSB (no missing codes over temperature)
• Requires an external reference and 133Ksps maximum conversion rate
• 4-channel single ended or 2-channel differential inputs
• Low power of 1.2mA (133Ksps, +3V supply), 54µA (1Ksps, +3V supply) & 1µA (power down mode)
• Offset error of ±2LSB and gain error of ±2LSB
• Small signal bandwidth (-3dB roll-off) of 2.25MHz and full power bandwidth of 1MHz
• SPI
• QSPI

• MICROWIRE compatible 4-wire serial interface
• Analogue inputs are software configurable for unipolar
• bipolar & single ended
• differential operation

Области применения

Обработка Сигнала, Медицинское, Переносные Устройства