Overview

Features and Benefits

  • 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

Product Details

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.

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Product Recommendations

MAX122 Companion Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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