Date: 26/06/2009

32-channel capable simultaneous-sampling 24-bit ADC

Maxim's MAX11040 is a new 4-channel, 24-bit simultaneous-sampling Analog to Digital Converter (ADC). With eight MAX11040 ICs daisy-chained, the sampling capacity can be extended up to 32 channels due to the availability of cascadable SPI/QSPI/MICROWIRE interface. Since all eight MAX11040 devices can be controlled 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 4 or as many as 32 channels.

The suggested applications are industrial power-grid-protection equipment, medical electronics-EKG/EEG equipment and other applications that require accurate conversions of simultaneously sampled channels between 0.25ksps and 64ksps.

The other features are,

1. The MAX11040 provides compensation for phase shifts caused by resistor dividers, transformers, or filters at the analog inputs through a programmable delay of 0 to 333µs.
2. Offers a minimum of 90dB of SINAD and 91dB of SFDR
3. Feature overvoltage protection on the analog inputs

The MAX11040 is available in a lead-free, 38-pin TSSOP package. Prices start at $13.45 (1000-up, FOB USA).