MAX1291:250ksps、+3V、8/4通道、12位ADC,带有+2.5V电压基准及并行接口

尺寸最小的低功耗、并行输出、12位ADC

The MAX1291/MAX1293 low-power, 12-bit analog-to-digital converters (ADCs) feature a successive-approximation ADC, automatic power-down, fast wake-up (2µs), an on-chip clock, +2.5V internal reference, and a high-speed, byte-wide parallel interface. They operate with a single +3V analog supply and feature a VLOGIC pin that allows them to interface directly with a +1.8V to +5.5V digital supply. Power consumption is only 5.7mW (VDD = VLOGIC) at the maximum sampling rate of 250ksps. Two software-selectable power-down modes enable the MAX1291/MAX1293 to be shut down between conversions; accessing the parallel interface returns them to normal operation. Powering down between conversions can cut supply current to under 10µA at reduced sampling rates. Both devices offer software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation. In single-ended mode, the MAX1291 has eight input channels and the MAX1293 has four input channels (four and two input channels, respectively, when in pseudo-differential mode). Excellent dynamic performance and low power, combined with ease of use and small package size, make these converters ideal for battery-powered and data-acquisition applications or for other circuits with demanding power consumption and space requirements. The MAX1291/MAX1293 tri-states active-low INT when active-low CS goes high. Refer to MAX1261/MAX1263 if tri-stating active-low INT is not desired. The MAX1291 is available in a 28-pin QSOP package, while the MAX1293 is available in a 24-pin QSOP. For pin-compatible +5V, 12-bit versions, refer to the MAX1290/MAX1292 data sheet.

关键特性
  • 12-Bit Resolution, ±0.5 LSB Linearity
  • +3V Single Operation
  • User-Adjustable Logic Level (+1.8V to +3.6V)
  • Internal +2.5V Reference
  • Software-Configurable, Analog Input Multiplexer
    • 8-Channel Single-Ended/4-Channel Pseudo-Differential (MAX1291)
    • 4-Channel Single-Ended/2-Channel Pseudo-Differential (MAX1293)
  • Software-Configurable, Unipolar/Bipolar Inputs
  • Low Power:
    • 1.9mA (250ksps)
    • 1.0mA (100ksps)
    • 400µA (10ksps)
    • 2µA (Shutdown)
  • Internal 3MHz Full-Power Bandwidth Track/Hold
  • Byte-Wide Parallel (8 + 4) Interface
  • Small Footprint:
    • 28-Pin QSOP (MAX1291)
    • 24-Pin QSOP (MAX1293)
MAX1291、MAX1293:典型工作电路
MAX1291、MAX1293:典型工作电路
应用
  • 数据采集系统
  • 数据记录
  • 能量管理
  • 工业控制系统
  • 病人监护
  • 触摸屏
数据手册DataSheet
语言下载文件备注
英文MAX1291-MAX1293.pdfRev 3; 03/2003
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)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxnominalminmaxmaxmaxSee Notes
MAX1291128250SARµP/8Both2.513.62.51.25-781QSOP/28$8.86 @1k
MAX12934QSOP/24$7.36 @1k
质量和环境数据
相关产品
  • MAX1267:265ksps、+3V、6/2通道、12位ADC,带有+2.5V电压基准及并行接口
  • MAX1261:250ksps、+3V、8/4通道、12位ADC,带有+2.5V电压基准及并行接口
  • MAX1268:420ksps、+5V、6/2通道、12位ADC,带有+2.5V电压基准及并行接口
  • MAX1262:450ksps、+5V、8/4通道、12位ADC,带有+2.5V电压基准及并行接口
  • MAX115:2x4通道、同时采样、12位ADC
  • MAX1297:265ksps、+3V、6/2通道、12位ADC,带有+2.5V电压基准及并行接口
  • MAX1295:265ksps、+3V、6/2通道、12位ADC,带有+2.5V电压基准及并行接口
  • MAX1290:400ksps、+5V、8/4通道、12位ADC,带有+2.5V电压基准及并行接口
  • MAX1292:400ksps、+5V、8/4通道、12位ADC,带有+2.5V电压基准及并行接口
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX1291ACEI停止供货MAX1291ACEI+QSOP,;28引脚;61.9mm²0°C至+70°CRoHS/无铅:否
MAX1291ACEI+生产中QSOP,;28引脚;61.9mm²0°C至+70°CRoHS/无铅:无铅
MAX1291ACEI+T生产中QSOP;28引脚0°C至+70°C参考数据资料
MAX1291ACEI-T停止供货MAX1291ACEI+TQSOP;28引脚0°C至+70°C参考数据资料
MAX1291AEEI停止供货MAX1291AEEI+QSOP,;28引脚;61.9mm²-40°C至+85°CRoHS/无铅:否
MAX1291AEEI+生产中QSOP,;28引脚;61.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX1291AEEI+T生产中QSOP,;28引脚;61.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX1291AEEI-T停止供货MAX1291AEEI+TQSOP;28引脚-40°C至+85°C参考数据资料
MAX1291BCEI停止供货MAX1291BCEI+QSOP,;28引脚;61.9mm²0°C至+70°CRoHS/无铅:否
MAX1291BCEI+生产中QSOP,;28引脚;61.9mm²0°C至+70°CRoHS/无铅:无铅
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?
MAX1291BCEI+T生产中QSOP,;28引脚;61.9mm²0°C至+70°CRoHS/无铅:无铅
MAX1291BCEI-T停止供货MAX1291BCEI+TQSOP,;28引脚;61.9mm²0°C至+70°CRoHS/无铅:否
MAX1291BEEI停止供货MAX1291BEEI+QSOP,;28引脚;61.9mm²-40°C至+85°CRoHS/无铅:否
MAX1291BEEI+生产中QSOP,;28引脚;61.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX1291BEEI+T生产中QSOP,;28引脚;61.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX1291BEEI-T停止供货MAX1291BEEI+TQSOP;28引脚-40°C至+85°C参考数据资料
MAX1291-MAX1293.pdf MAX1293
MAX1291.pdf MAX1291
MAX1291-MAX1293.pdf MAX1293