12-Bit, 300ksps ADCs with Differential Track/Hold, and Internal Reference

The MAX11634–MAX11637 are serial 12-bit analog-to-digital converters (ADCs) with an internal reference and true differential track/hold. 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 MAX11636/MAX11637 have 8 input channels and the MAX11634/ MAX11635 have 4 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 MAX11634–MAX11637 are available in a 16-pin QSOP package. 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 True Differential Track/Hold

* 8-/4-Channel Single Ended

* 4-/2-Channel True Differential

* Unipolar or Bipolar Inputs

* Single Supply

* 2.7V to 3.6V (MAX11635/MAX11637)

* 4.75V to 5.25V (MAX11634/MAX11636)

* 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 16-Pin QSOP Package