8-Bit, 16-/8-Channel, 300ksps ADCs with FIFO and Internal Reference

The MAX11638/MAX11639/MAX11642/MAX11643 are serial 8-bit analog-to-digital converters (ADCs) with an internal reference. These devices feature on-chip FIFO, scan mode, internal clock mode, internal averaging, and AutoShutdown™. The maximum sampling rate is 300ksps using an external clock. The MAX11642/MAX11643 have 16 input channels and the MAX11638/MAX11639 have 8 input channels. These four devices operate from either a +3V supply or a +5V supply, and contain a 10MHz SPI/QSPI™/MICROWIRE®-compatible serial port.

The MAX11638/MAX11639 are available in 16-pin QSOP packages. The MAX11642/MAX11643 are available in 24-pin QSOP packages. All four devices are specified over the extended -40°C to +85°C temperature range.

Applications

* Data Logging * Data-Acquisition Systems * Industrial Control Systems * Instrumentation * Patient Monitoring * System Supervision

* Analog Multiplexer with Track-and-Hold

* 16 Channels (MAX11642/MAX11643)

* 8 Channels (MAX11638/MAX11639)

* Single Supply

* 2.7V to 3.6V (MAX11639/MAX11643)

* 4.75V to 5.25V (MAX11638/MAX11642)

* Internal Reference

* 2.5V (MAX11639/MAX11643)

* 4.096V (MAX11638/MAX11642)

* External Reference: 1V to VDD

* 16-Entry First-In/First-Out (FIFO)

* Scan Mode, Internal Averaging, and Internal Clock

* Accuracy: ±1 LSB INL, ±1 LSB DNL, No Missing Codes Over Temperature

* 10MHz 3-Wire SPI-/QSPI-/MICROWIRE-Compatible Interface

* Small Packages

* 16-Pin QSOP (MAX11638/MAX11639)

* 24-Pin QSOP (MAX11642/MAX11643)