MAX1142

14位ADC,200ksps、+5V单电源供电,内置电压基准


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说明

The MAX1142/MAX1143 are 200ksps, 14-bit ADCs. These serially interfaced ADCs connect directly to SPI™, QSPI™, and MICROWIRE™ devices without external logic. They combine an input scaling network, internal track/hold, a clock, +4.096V reference, and three general-purpose digital output pins (for external multiplexer or PGA control) in a 20-pin SSOP package. The excellent dynamic performance (SINAD > 81dB), high-speed (200ksps), and low power (7.5mA) of these ADCs, make them ideal for applications such as industrial process control, instrumentation, and medical applications. The MAX1142 accepts input signals of 0 to +12V (unipolar) or ±12V (bipolar), while the MAX1143 accepts input signals of 0 to +4.096V (unipolar) or ±4.096V (bipolar). Operating from a single +4.75V to +5.25V analog supply and a +4.75V to +5.25V digital supply, power-down modes reduce current consumption to 1mA at 10ksps and further reduce supply current to less than 20µA at slower data rates. A serial strobe output (SSTRB) allows direct connection to the TMS320-family of digital signal processors. The MAX1142/MAX1143 user can select either the internal clock, or an external serial-interface clock for the ADC to perform analog-to-digital conversions.

The MAX1142/MAX1143 feature internal calibration circuitry to correct linearity and offset errors. On-demand calibration allows the user to optimize performance. Three user-programmable logic outputs are provided for the control of an 8-channel MUX or a PGA.
MAX1142、MAX1143:典型应用电路 MAX1142、MAX1143:典型应用电路 放大+

关键特性

  • 200ksps (bipolar) and 150ksps (unipolar) Sampling ADC
  • 14-Bits, No Missing Codes
  • 1LSB INL Guaranteed
  • 81dB (min) SINAD
  • +5V Single-Supply Operation
  • Low Power Operation, 7.5mA (Unipolar Mode)
  • 2.5µA Shutdown Mode
  • Software-Configurable Unipolar & Bipolar Input Ranges
    • 0 to +12V and ±12V (MAX1142)
    • 0 to +4.096V and ±4.096V (MAX1143)
    • Internal or External Reference
  • Internal or External Clock
  • SPI/QSPI/MICROWIRE-Compatible Wire Serial Interface
  • Three User-Programmable Logic Outputs
  • Small 20-Pin SSOP Package

应用

  • 数据采集
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
MAX1142 141200SARSPIS.E. Only4.09634.2121282-911
SSOP/20
$8.71 @500
MAX1143 4.0964.096
SSOP/20
$8.22 @1k
查看所有Precision ADCs (< 5Msps) (443)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

技术资料

应用笔记 1948 Analysis of ADC System Distortion Caused by Source Resistance

质量和环境数据

申请可靠性报告: MAX1142 
无铅封装的锡(Sn)晶须报告
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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