The MAX1040/MAX1042/MAX1046/MAX1048 integrate a multichannel, 10-bit, analog-to-digital converter (ADC) and a quad, 10-bit, digital-to-analog converter (DAC) in a single IC. The devices also include a temperature sensor and configurable general-purpose I/O ports (GPIOs) with a 25MHz SPITM-/QSPITM-/MICROWIRETM-compatible serial interface. The ADC is available in a four or an eight input-channel version. The four DAC outputs settle within 2.0s, and the ADC has a 225ksps conversion rate. All devices include an internal reference (4.096V) providing a well-regulated, low-noise reference for both the ADC and DAC. Programmable reference modes for the ADC and DAC allow the use of an internal reference, an external reference, or a combination of both. Features such as an internal 1C accurate temperature sensor, FIFO, scan modes, programmable internal or external clock modes, data averaging, and AutoShutdownTM allow users to minimize both power consumption and processor requirements. The low glitch energy (4nVs) and low digital feedthrough (0.5nVs) of the integrated quad DACs make these devices ideal for digital control of fastresponse closed-loop systems. The devices are guaranteed to operate with a supply voltage from +4.75V to +5.25V. These devices consume 2.5mA at 225ksps throughput, only 22A at 1ksps throughput, and under 0.2A in the shutdown mode. The MAX1042/MAX1048 offer four GPIOs that can be configured as inputs or outputs. The MAX1040/MAX1042/MAX1046/MAX1048 are available in 36-pin thin QFN packages. All devices are specified over the -40C to +85C temperature range.