MAX1247:+2.7V、低功耗、4通道、串行12位ADC,QSOP-16封装

The MAX1246/MAX1247 12-bit data-acquisition systems combine a 4-channel multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and low power consumption. The MAX1246 operates from a single +2.7V to +3.6V supply; the MAX1247 operates from a single +2.7V to +5.25V supply. Both devices' 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 MAX1246/MAX1247 use either the internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions. The MAX1246 has an internal 2.5V reference, while the MAX1247 requires an external reference. Both parts have a reference-buffer amplifier with a ±1.5% voltage-adjustment range. These devices provide a hard-wired SHDN-bar 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 the MAX1246/MAX1247, 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 MAX1246/MAX1247 are available in a 16-pin DIP and a small QSOP that occupies the same board area as an 8-pin SO. For 8-channel versions of these devices, see the MAX146/MAX147 data sheet.

关键特性
  • 4-Channel Single-Ended or 2-Channel Differential Inputs
  • Single-Supply Operation:
    • +2.7V to +3.6V (MAX1246)
    • +2.7V to +5.25V (MAX1247)
  • Internal 2.5V Reference (MAX1246)
  • Low Power:
    • 1.2mA (133ksps, 3V supply)
    • 54µA (1ksps, 3V supply)
    • 1µA (power-down mode)
  • SPI/QSPI/MICROWIRE/TMS320-Compatible 4-Wire Serial Interface
  • Software-Configurable Unipolar or Bipolar Inputs
  • 16-Pin QSOP Package (same area as 8-pin SO)
MAX1246、MAX1247:典型工作电路
MAX1246、MAX1247:典型工作电路
应用
  • 电池供电应用
  • 数据采集
  • 医疗仪器
  • 笔输入量化器
  • 便携式数据记录
  • 过程控制
数据手册DataSheet
语言下载文件备注
英文MAX1246-MAX1247.pdfRev 2; 03/2002
关键参数
Part NumberResolution
(bits)
Input Chan.Conv. Rate
(ksps)
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
(V)
External VREF
(V)
External VREF
(V)
Unipolar VIN
(V)
Bipolar VIN
(±V)
SNR
(dB)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxnominalminmaxmaxmaxSee Notes
MAX1246124133SARSPIBoth2.513.62.51.2570-881
  • CDIP(N)/16
  • PDIP(N)/16
  • QSOP/16
$8.89 @1k
MAX1247-5.25
  • CDIP(N)/16
  • PDIP(N)/16
  • QSOP/16
$7.20 @1k
开发工具
技术资料
相关产品
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  • MAX1346:12位、多通道ADC/DAC,带有FIFO、温度传感器和GPIO端口
  • MAX145:+2.7V、低功耗、2通道、108ksps、串行12位ADC,8引脚µMAX封装
  • MAX144:+2.7V、低功耗、2通道、108ksps、串行12位ADC,8引脚µMAX封装
  • MAX146:+2.7V、低功耗、8通道、串行12位ADC
  • MAX147:+2.7V、低功耗、8通道、串行12位ADC
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX1247ACEE停止供货MAX1247ACEE+QSOP,;16引脚;30.9mm²0°C至+70°CRoHS/无铅:否
MAX1247ACEE+生产中QSOP,;16引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX1247ACEE+T生产中QSOP,;16引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX1247ACEE-T停止供货MAX1247ACEE+TQSOP;16引脚0°C至+70°C参考数据资料
MAX1247ACPE停止供货MAX1247ACPE+PDIP(N),;16引脚;158.4mm²0°C至+70°CRoHS/无铅:否
MAX1247ACPE+生产中PDIP(N),;16引脚;158.4mm²0°C至+70°CRoHS/无铅:无铅
MAX1247AEEE停止供货MAX1247AEEE+QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX1247AEEE+生产中QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX1247AEEE+T生产中QSOP;16引脚-40°C至+85°C参考数据资料
MAX1247AEEE-T停止供货MAX1247AEEE+TQSOP;16引脚-40°C至+85°C参考数据资料
型号状况推荐替代产品封装:类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅?
MAX1247AEPE停止供货MAX1247AEPE+PDIP(N),;16引脚;158.4mm²-40°C至+85°CRoHS/无铅:否
MAX1247AEPE+生产中PDIP(N),;16引脚;158.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX1247AMJE停止供货CDIP(N),;16引脚;173.5mm²-55°C至+125°CRoHS/无铅:否
MAX1247BCEE停止供货MAX1247BCEE+QSOP,;16引脚;30.9mm²0°C至+70°CRoHS/无铅:否
MAX1247BCEE+生产中QSOP,;16引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX1247BCEE+T生产中QSOP,;16引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX1247BCEE-T停止供货MAX1247BCEE+TQSOP,;16引脚;30.9mm²0°C至+70°CRoHS/无铅:否
MAX1247BCPE停止供货MAX1247BCPE+PDIP(N),;16引脚;158.4mm²0°C至+70°CRoHS/无铅:否
MAX1247BCPE+生产中PDIP(N),;16引脚;158.4mm²0°C至+70°CRoHS/无铅:无铅
MAX1247BEEE停止供货MAX1247BEEE+QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
型号状况推荐替代产品封装:类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅?
MAX1247BEEE+生产中QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX1247BEEE+T生产中QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX1247BEEE-T停止供货MAX1247BEEE+TQSOP;16引脚-40°C至+85°C参考数据资料
MAX1247BEPE停止供货MAX1247BEPE+PDIP(N),;16引脚;158.4mm²-40°C至+85°CRoHS/无铅:否
MAX1247BEPE+生产中PDIP(N),;16引脚;158.4mm²-40°C至+85°CRoHS/无铅:无铅
MAX1247BMJE停止供货CDIP(N),;16引脚;173.5mm²-55°C至+125°CRoHS/无铅:否
MAX1247EVL11-QSOP停止供货参考数据资料
MAX1246-MAX1247.pdf MAX1247
Frequently Asked Questions about Data Converters MAX19588
MAX1246-MAX1247.pdf MAX1246