MAX11642:8-Bit, 16-/8-Channel, 300ksps ADCs with FIFO and Internal Reference

Complete Family of Low-Cost, 8-Bit, 8-/16-Channel ADCs with Internal Reference, FIFO, and SPI Interface

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.

Key Features
  • 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)
MAX11638, MAX11639, MAX11642, MAX11643: Functional Diagram
MAX11638, MAX11639, MAX11642, MAX11643: Functional Diagram
Applications/Uses
  • Data Logging
  • Data-Acquisition Systems
  • Industrial Control Systems
  • Instrumentation
  • Patient Monitoring
  • System Supervision
DataSheet
titleDownload file
MAX11638-MAX11643 Data SheetMAX11638-MAX11643.pdf
Parametrics
Part NumberResolution
(bits)
Input Chan.Conv. Rate
(ksps)
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
(V)
External VREF
(V)
External VREF
(V)
Unipolar VIN
(V)
SNR
(dB)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxnominalminmaxmaxSee Notes
MAX1163888300SARSPIS.E. Only4.09615.254.09649-700.5QSOP/16$1.80 @1k
MAX1163982.53.62.5QSOP/16$1.80 @1k
MAX11642164.0965.254.096QSOP/24$2.17 @1k
MAX11643162.53.62.5QSOP/24$2.35 @1k
Design kits & evaluation modules
Related Products
  • MAX11639:8-Bit, 16-/8-Channel, 300ksps ADCs with FIFO and Internal Reference
  • MAX1394:1.5V to 3.6V, 416ksps, 1-Channel True-Differential/2-Channel Single-Ended, 8-Bit, SAR ADCs
  • MAX1117:Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX11642EEG+ActiveQSOP,;24 pin;54.2 mm²-40°C to +85°CLead Free
MAX11642EEG+TActiveQSOP,;24 pin;54.2 mm²-40°C to +85°CLead Free
MAX11638-MAX11643.pdf MAX11643
Choosing the Optimal Clock Mode for MAX116xx, MAX123x, and MAX103x SAR ADCs MAX1231
MAX11638-MAX11643.pdf MAX11639