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MAX1303：4-Channel, ±VREF Multirange Inputs, Serial 16-Bit ADC

The MAX1303 multirange, low-power, 16-bit, successive-approximation, analog-to-digital converter (ADC) operates from a single +5V supply and achieves throughput rates up to 115ksps. A separate digital supply allows digital interfacing with 2.7V to 5.25V systems using the SPI-/QSPI™-/MICROWIRE®-compatible serial interface. Partial power-down mode reduces the supply current to 1.3mA (typ). Full power-down mode reduces the power-supply current to 1µA (typ). The MAX1303 provides four (single-ended) or two (true differential) analog input channels. Each analog input channel is independently software programmable for seven single-ended input ranges (0V to +VREF/2, -VREF/2 to 0V, 0V to +VREF, -VREF to 0V, ±VREF/4, ±VREF/2, and ±VREF), and three differential input ranges (±VREF/2, ±VREF, ±2 x VREF). An on-chip +4.096V reference offers a small convenient ADC solution. The MAX1303 also accepts an external reference voltage between 3.800V and 4.136V. The MAX1303 is available in a 20-pin TSSOP package, and is specified for operation from -40°C to +85°C.

Key Features Software-Programmable Input Range for Each Channel Single-Ended Input Ranges 0V to +VREF/2, -VREF/2 to 0V, 0V to +VREF, -VREF to 0V, ±VREF/4, ±VREF/2, and ±VREF Differential Input Ranges ±VREF/2, ±VREF, and ±2 x VREF Four Single-Ended or Two Differential Analog Inputs ±6V Overvoltage Tolerant Inputs Internal or External Reference 115ksps Maximum Sample Rate Single +5V Power Supply 20-Pin TSSOP Package

MAX1302, MAX1303: Pin Configuration Applications/Uses Avionics Data Acquisition Systems Industrial Control Systems Robotics

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