MAX11040 Simultaneous-Sampling ADC Launched

Maxim Integrated Products has introduced the MAX11040 four-channel 24-bit simultaneous-sampling ADC. Developed to enable simplicity in system design, up to eight MAX11040 devices can be daisy-chained to provide a sampling capacity of up to 32 channels. The MAX11040 achieves this high capacity and scalability with a cascadable SPI/QSPI/Microwire interface, which eliminates the complexity of using individual chip-select inputs to control each ADC.

Because all eight MAX11040 devices can be accessed using only a single chip-select input, from the host processor's point of view, the control logic remains the same regardless if there are only four or as many as 32 channels. The MAX11040 provides compensation for phase shifts caused by resistor dividers, transformers, or filters at the analogue inputs through a programmable delay of 0-333 microseconds.

Together with a minimum of 90dB of SINAD and 91dB of SFDR, these features make the MAX11040 ideal for industrial power-grid protection equipment, as well as medical EKG/EEG equipment and other applications that require accurate conversions of simultaneously sampled channels between 0.25ksps and 64ksps.

Additionally, overvoltage protection on the analogue inputs protects the MAX11040 from voltages as large as +/-6V when referenced to the device's analogue ground, simplifying design and reducing cost. The MAX11040 is available in a lead-free, 38-pin TSSOP package.

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