MAX11635:12-Bit, 300ksps ADCs with Differential Track/Hold, and Internal Reference

Complete Family of Low-Cost, 12-Bit, 4-/8-Channel ADCs with Internal Reference, FIFO, and SPI Interface

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.

Key Features
  • 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
MAX11634, MAX11635, MAX11636, MAX11637: Functional Diagram
MAX11634, MAX11635, MAX11636, MAX11637: Functional Diagram
Applications/Uses
  • Data Logging
  • Data-Acquisition Systems
  • Industrial Control Systems
  • Instrumentation
  • Patient Monitoring
  • System Supervision
DataSheet
titleDownload file
MAX11634-MAX11637 Data SheetMAX11634-MAX11637.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)
Bipolar VIN
(±V)
SNR
(dB)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxnominalminmaxmaxmaxSee Notes
MAX11634124300SARSPIBoth4.09605.254.0962.04870-821QSOP/16$2.85 @1k
MAX1163542.53.62.51.25QSOP/16$2.85 @1k
MAX1163684.0965.254.0962.048QSOP/16$3.17 @1k
MAX1163782.53.62.51.25QSOP/16$3.43 @1k
Design kits & evaluation modules
Related Products
  • MAX11636:12-Bit, 300ksps ADCs with Differential Track/Hold, and Internal Reference
  • MAX11628:12-Bit, 300ksps ADCs with FIFO and Internal Reference
  • MAX1342:12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports
  • MAX146:+2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX11635EEE+ActiveQSOP,;16 pin;30.9 mm²-40°C to +85°CLead Free
MAX11635EEE+TActiveQSOP,;16 pin;30.9 mm²-40°C to +85°CLead Free
MAX11635EVKIT#ActiveEVKIT;-40°C to +85°CSee data sheet
MAX11635EVKIT+ActiveKIT;-40°C to +85°CSee data sheet
MAX11634-MAX11637.pdf MAX11637
Choosing the Optimal Clock Mode for MAX116xx, MAX123x, and MAX103x SAR ADCs MAX1231
MAX11634-MAX11637.pdf MAX11636