MAX1425:10位、20Msps ADC

低功耗、低失真、10位ADC,提供61dB SNR

The MAX1425 10-bit, monolithic analog-to-digital converter (ADC) is capable of a 20Msps sampling rate. This device features an internal track-and-hold (T/H) amplifier for excellent dynamic performance; at the same time, it minimizes the number of external components. Low input capacitance of only 8pF minimizes input drive requirements. A wide input bandwidth (up to 150MHz) makes this device suitable for digital RF/IF downconverter applications employing undersampling techniques. The MAX1425 employs a differential pipelined architecture with a wideband T/H amplifier to maximize throughput while limiting power consumption to only 172mW. The MAX1425 generates an internal +2.5V reference that supplies three additional reference voltages (+3.25V, +2.25V, and +1.25V). These reference voltages provide a differential input range of +2V to -2V. The analog inputs are biased internally to correct the DC level, eliminating the need for external biasing on AC-coupled applications. A separate +3V digital logic supply input allows for separation of digital and analog circuitry. The output data is in two's complement format. The MAX1425 is available in the space-saving 28-pin SSOP package. For a pin-compatible version at a lower data rate, refer to the MAX1426 data sheet. For a higher data rate, refer to the MAX1424 data sheet.

关键特性
  • Differential Inputs for High Common-Mode Noise Rejection
  • Signal-to-Noise Ratio
    • 61dB (at fIN = 2MHz)
    • 59.3dB (at fIN = 10MHz)
  • Internal +2.5V Reference
  • 150MHz Input Bandwidth
  • Wide ±2V Input Range
  • Low Power Consumption: 172mW
  • Separate Digital Supply Input for 3V Logic Compatibility
  • Single +5V Supply Operation Possible
MAX1425:功能框图
MAX1425:功能框图
应用
  • CCD像素处理
  • 中频与基带数字化
  • IR焦平面矩阵
  • 医疗超声成像
  • 雷达
  • 机顶盒
数据手册DataSheet
语言下载文件备注
英文MAX1425.pdfRev 1; 08/2011
关键参数
Part NumberInput Chan.Resolution
(bits)
Sample Rate
(Msps)
SFDR
(dBc)
ENOB
(bits)
SINAD
(dB)
SNR
(dB)
THD
(dB)
DNL
(±LSB)
INL
(±LSB)
Full Pwr. BW
(MHz)
ICC
(mA)
Data Bus InterfacePackage/Pins
max ≥minminmintyp
MAX142511020699.55959-6911.540031.5µP/10SSOP/28
开发工具
技术资料
相关产品
  • MAX1448:10位、80Msps、单路3.0V、低功耗ADC,内置电压基准
  • MAX1444:10位、40Msps、3.0V、低功耗ADC,内置电压基准
  • MAX1449:10位、105Msps、单路+3.3V、低功耗ADC,内置电压基准
  • MAX1446:10位、60Msps、3.0V、低功耗ADC,内置电压基准
  • MAX1426:10位、10Msps ADC
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX1425EAI停止供货MAX1425EAI+SSOP,;28引脚;81.6mm²-40°C至+85°C参考数据资料
MAX1425EAI+生产中SSOP,;28引脚;81.6mm²-40°C至+85°CRoHS/无铅:无铅
MAX1425EAI+T生产中SSOP;-40°C至+85°C参考数据资料
MAX1425EAI-T停止供货MAX1425EAI+TSSOP;28引脚-40°C至+85°C参考数据资料
MAX1425.pdf MAX1425
Crunching FFTs with Microsoft Excel MAX1449
Understanding Pipelined ADCs MAX1446
MAX1425.pdf MAX1425