ADC Single SAR 300ksps 8-bit Serial 24-Pin QSOP

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.

• 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 V_DD

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)