MAX122

500ksps、12位ADC,带有采样/保持和电压基准


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说明

The MAX120/MAX122 complete, BiCMOS, sampling 12-bit analog-to-digital converters (ADCs) combine an on-chip track/hold (T/H) and a low-drift voltage reference with fast conversion speeds and low-power consumption. The T/H’s 350ns acquisition time combined with the MAX120’s 1.6µs conversion time results in throughput rates as high as 500k samples per second (ksps). Throughput rates of 333ksps are possible with the 2.6μs conversion time of the MAX122.

The MAX120/MAX122 accept analog input voltages from -5V to +5V. The only external components needed are decoupling capacitors for the power-supply and reference voltages. The MAX120 operates with clocks in the 0.1MHz to 8MHz frequency range. The MAX122 accepts 0.1MHz to 5MHz clock frequencies.

The MAX120/MAX122 employ a standard microprocessor (µP) interface. Three-state data outputs are configured to operate with 12-bit data buses. Data-access and bus-release timing specifications are compatible with most popular µPs without resorting to wait states. In addition, the MAX120/MAX122 can interface directly to a first-in, first-out (FIFO) buffer, virtually eliminating µP interrupt overhead. All logic inputs and outputs are TTL/CMOS compatible. For applications requiring a serial interface, refer to the MAX121.

MAX120、MAX122:功能框图 MAX120、MAX122:功能框图 放大+

关键特性

  • 12-Bit Resolution
  • No Missing Codes Over Temperature
  • 20ppm/°C -5V Internal Reference
  • 1.6µs Conversion Time/500ksps Throughput (MAX120)
  • 2.6µs Conversion Time/333ksps Throughput (MAX122)
  • Low Noise and Distortion:
    • 70dB Minimum SINAD;
    • -70dB Max THD (MAX122)
  • Low Power Dissipation: 210mW
  • Separate Track/Hold Control Input
  • Continuous-Conversion Mode Available
  • ±5V Input Range, Overvoltage Tolerant to ±15V
  • 24-Pin Narrow DIP, Wide SO and SSOP Packages

请查看具体的参数规格 Precision ADCs (< 5Msps) (437)


Part NumberResolution
(bits)
Input Chan.Conv. Rate
(ksps)
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
(V)
Bipolar VIN
(±V)
SNR
(dB)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxnominalmaxSee Notes
MAX120 121500SARµP/12S.E. Only5572-821
CDIP/24
DICE SALES/N
PDIP/24
SOIC (W)/24
SSOP/24
$23.52 @500
MAX122 33370-85
DICE SALES/N
LCC/28
PDIP/24
SDBRZ/24
SOIC (W)/24
SSOP/24
$17.76 @500

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。
申请可靠性报告: MAX122 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

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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