MAX1138, MAX1138K, MAX1138L, MAX1138M:2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial 10-Bit ADCs

The MAX1136–MAX1139 low-power, 10-bit, multichannel analog-to-digital converters (ADCs) feature internal track/hold (T/H), voltage reference, clock, and an I²C-compatible 2-wire serial interface. These devices operate from a single supply of 2.7V to 3.6V (MAX1137/MAX1139) or 4.5V to 5.5V (MAX1136/MAX1138) and require only 670µA at the maximum sampling rate of 94.4ksps. Supply current falls below 230µA for sampling rates under 46ksps. AutoShutdown™ powers down the devices between conversions, reducing supply current to less than 1µA at low throughput rates. The MAX1136/MAX1137 have four analog input channels each, while the MAX1138/MAX1139 have 12 analog input channels each. The fully differential analog inputs are software configurable for unipolar or bipolar, and single ended or differential operation. The full-scale analog input range is determined by the internal reference or by an externally applied reference voltage ranging from 1V to VDD. The MAX1137/MAX1139 feature a 2.048V internal reference and the MAX1136/MAX1138 feature a 4.096V internal reference. The MAX1136/MAX1137 are available in an 8-pin µMAX® package. The MAX1138/MAX1139 are available in a 16-pin QSOP package. The MAX1136–MAX1139 are guaranteed over the extended temperature range (-40°C to +85°C). For pin-compatible 12-bit parts, refer to the MAX1236–MAX1239 data sheet. For pin-compatible 8-bit parts, refer to the MAX1036–MAX1039 data sheet.

Key Features
  • High-Speed I²C-Compatible Serial Interface
    • 400kHz Fast Mode
    • 1.7MHz High-Speed Mode
  • Single-Supply
    • 2.7V to 3.6V (MAX1137/MAX1139)
    • 4.5V to 5.5V (MAX1136/MAX1138)
  • Internal Reference
    • 2.048V (MAX1137/MAX1139)
    • 4.096V (MAX1136/MAX1138)
  • External Reference: 1V to VDD
  • Internal Clock
  • 4-Channel Single-Ended or 2-Channel Fully Differential (MAX1136/MAX1137)
  • 12-Channel Single-Ended or 6-Channel Fully Differential (MAX1138/MAX1139)
  • Internal FIFO with Channel-Scan Mode
  • Low Power
    • 670µA at 94.4ksps
    • 230µA at 40ksps
    • 60µA at 10ksps
    • 6µA at 1ksps
    • 0.5µA in Power-Down Mode
  • Software-Configurable Unipolar/Bipolar
  • Small Packages
    • 8-Pin µMAX (MAX1136/MAX1137)
    • 16-Pin QSOP (MAX1138/MAX1139)
MAX1136, MAX1137, MAX1138, MAX1139: Typical Operating Circuit
MAX1136, MAX1137, MAX1138, MAX1139: Typical Operating Circuit
Applications/Uses
  • Battery-Powered Test Equipment
  • Handheld Portable Applications
  • Medical Instruments
  • Receive Signal Strength Indicators
  • Solar-Powered Remote Systems
  • System Supervision
DataSheet
titleDownload file
MAX1136-MAX1139M Data SheetMAX1136-MAX1139M.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
MAX113610494.4SARI2CBoth4.09615.54.0964.09660-701µMAX/8$4.56 @1k
MAX113742.0483.62.0482.048µMAX/8$3.85 @1k
MAX1138124.0965.54.0964.096QSOP/16$6.40 @1k
MAX1139122.0483.62.0482.048QSOP/16$6.40 @1k
Quality and Environmental Data
Related Products
  • MAX11647:Low-Power, 1-/2-Channel, I²C, 10-Bit ADCs in Ultra-Tiny 1.9mm x 2.2mm Package
  • MAX11606:2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/8-/12-Channel, 2-Wire Serial 10-Bit ADCs
  • MAX1086:150ksps, 10-Bit, 2-Channel Single-Ended, and 1-Channel True-Differential ADCs in SOT23 and TDFN
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1138EEENo Longer AvailableMAX1138EEE+QSOP,;16 pin;30.9 mm²-40°C to +85°CNo
MAX1138EEE+ActiveQSOP,;16 pin;30.9 mm²-40°C to +85°CLead Free
MAX1138EEE+TActiveQSOP,;16 pin;30.9 mm²-40°C to +85°CLead Free
MAX1138EEE-TNo Longer AvailableMAX1138EEE+TQSOP;16 pin-40°C to +85°CSee data sheet
MAX1138KEEENo Longer AvailableMAX1138EEE+QSOP,;16 pin;30.9 mm²-40°C to +85°CNo
MAX1138KEEE+No Longer AvailableMAX1138EEE+QSOP,;16 pin;30.9 mm²-40°C to +85°CLead Free
MAX1138KEEE+TNo Longer AvailableMAX1138EEE+QSOP;16 pin-40°C to +85°CSee data sheet
MAX1138KEEE-TNo Longer AvailableMAX1138EEE+QSOP;16 pin-40°C to +85°CSee data sheet
MAX1138LEEENo Longer AvailableMAX1138EEE+QSOP,;16 pin;30.9 mm²-40°C to +85°CNo
MAX1138LEEE+No Longer AvailableMAX1138EEE+QSOP,;16 pin;30.9 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1138LEEE+TNo Longer AvailableMAX1138EEE+QSOP;16 pin-40°C to +85°CSee data sheet
MAX1138LEEE-TNo Longer AvailableMAX1138EEE+QSOP;16 pin-40°C to +85°CSee data sheet
MAX1138MEEENo Longer AvailableMAX1138EEE+QSOP,;16 pin;30.9 mm²-40°C to +85°CNo
MAX1138MEEE+No Longer AvailableMAX1138EEE+QSOP,;16 pin;30.9 mm²-40°C to +85°CLead Free
MAX1138MEEE+TNo Longer AvailableMAX1138EEE+QSOP;16 pin-40°C to +85°CSee data sheet
MAX1138MEEE-TNo Longer AvailableMAX1138EEE+QSOP;16 pin-40°C to +85°CSee data sheet
MAX1136-MAX1139M.pdf MAX1139
MAX1138.pdf MAX1138
MAX1136-MAX1139M.pdf MAX1139M