MAX1229:12-Bit 300ksps ADCs with FIFO, Temp Sensor, Internal Reference

The MAX1227/MAX1229/MAX1231 are serial 12-bit analog-to-digital converters (ADCs) with an internal reference and an internal temperature sensor. 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 MAX1231 has 16 input channels, the MAX1229 has 12 input channels, and the MAX1227 has 8 input channels. All input channels are configurable for single-ended or differential inputs in unipolar or bipolar mode. All three devices operate from a +3V supply and contain a 10MHz SPI™/QSPI™/MICROWIRE™-compatible serial port. The MAX1231 is available in 28-pin 5mm x 5mm TQFN with exposed pad and 24-pin QSOP packages. The MAX1227/MAX1229 are only available in QSOP packages. All three devices are specified over the extended -40°C to +85°C temperature range.

Key Features
  • Internal Temperature Sensor (±0.7°C Accuracy)
  • 16-Entry First-In/First-Out (FIFO)
  • Analog Multiplexer with True Differential Track/Hold
    • 16-, 12-, 8-Channel Single Ended
    • 8-, 6-, 4-Channel True Differential (Unipolar or Bipolar)
  • Accuracy: ±1 LSB INL, ±1 LSB DNL, No Missing Codes Overtemperature
  • Scan Mode, Internal Averaging, and Internal Clock
  • Low-Power Single +3V Operation
    • 1mA at 300ksps
  • Internal 2.5V Reference or External Differential Reference
  • 10MHz 3-Wire SPI-/QSPI-/MICROWIRE-Compatible Interface
  • Space-Saving 28-Pin 5mm x 5mm TQFN Package
MAX1227, MAX1229, MAX1231: Functional Diagram
MAX1227, MAX1229, MAX1231: Functional Diagram
Applications/Uses
  • Data Acquisition Systems
  • Data Logging
  • Industrial Control Systems
  • Instrumentation
  • Patient Monitoring
  • System Supervision
DataSheet
titleDownload file
MAX1227-MAX1231 Data SheetMAX1227-MAX1231.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
MAX1227128300SARSPIBoth2.513.62.51.2570-821QSOP/16$8.02 @1k
MAX122912QSOP/20$7.62 @1k
MAX123116QSOP/24
TQFN/28
$5.50 @1k
Design kits & evaluation modules
Related Products
  • MAX11637:12-Bit, 300ksps ADCs with Differential Track/Hold, and Internal Reference
  • MAX11629:12-Bit, 300ksps ADCs with FIFO and Internal Reference
  • MAX1257:12-Bit, Multichannel ADCs/DACs with FIFO, Temperature Sensing, and GPIO Ports
  • MAX1230:12-Bit 300ksps ADCs with FIFO, Temp Sensor, Internal Reference
  • MAX1231:12-Bit 300ksps ADCs with FIFO, Temp Sensor, Internal Reference
  • MAX146:+2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1229ACEPNo Longer AvailableMAX1229BCEP+QSOP,;20 pin;54.2 mm²0°C to +70°CNo
MAX1229ACEP+No Longer AvailableMAX1229BCEP+QSOP,;20 pin;54.2 mm²0°C to +70°CLead Free
MAX1229ACEP+TNo Longer AvailableMAX1229BCEP+QSOP;20 pin0°C to +70°CSee data sheet
MAX1229ACEP-TNo Longer AvailableMAX1229BCEP+QSOP;20 pin0°C to +70°CSee data sheet
MAX1229AEEPNo Longer AvailableMAX1229BEEP+QSOP,;20 pin;54.2 mm²-40°C to +85°CNo
MAX1229AEEP+No Longer AvailableMAX1229BEEP+QSOP,;20 pin;54.2 mm²-40°C to +85°CLead Free
MAX1229AEEP+TNo Longer AvailableMAX1229BEEP+QSOP;20 pin-40°C to +85°CSee data sheet
MAX1229AEEP-TNo Longer AvailableMAX1229BEEP+QSOP;20 pin-40°C to +85°CSee data sheet
MAX1229BCEPNo Longer AvailableMAX1229BCEP+QSOP;20 pin0°C to +70°CSee data sheet
MAX1229BCEP+ActiveQSOP,;20 pin;54.2 mm²0°C to +70°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1229BCEP+TActiveQSOP,;20 pin;54.2 mm²0°C to +70°CLead Free
MAX1229BCEP-TNo Longer AvailableMAX1229BCEP+TQSOP;20 pin0°C to +70°CSee data sheet
MAX1229BEEPNo Longer AvailableMAX1229BEEP+QSOP;20 pin-40°C to +85°CSee data sheet
MAX1229BEEP+ActiveQSOP,;20 pin;54.2 mm²-40°C to +85°CLead Free
MAX1229BEEP+TActiveQSOP,;20 pin;54.2 mm²-40°C to +85°CLead Free
MAX1229BEEP-TNo Longer AvailableMAX1229BEEP+TQSOP;20 pin-40°C to +85°CSee data sheet
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