MAX1228:12-Bit 300ksps ADCs with FIFO, Temp Sensor, Internal Reference

16-Channel, 12-/10-Bit ADCs Feature Internal Temp Sensor and Minimize Microprocessor I/O Requirements

The MAX1226/MAX1228/MAX1230 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 MAX1230 has 16 input channels, the MAX1228 has 12 input channels, and the MAX1226 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 +5V supply and contain a 10MHz SPI™/QSPI™/MICROWIRE™-compatible serial port. The MAX1230 is available in 28-pin 5mm x 5mm QFN with exposed pad and 24-pin QSOP packages. The MAX1226/MAX1228 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 Over Temperature
  • Scan Mode, Internal Averaging, and Internal Clock
  • Low-Power Single +5V Operation
    • 2.3mA at 300ksps
  • Internal 4.096V Reference or External Differential Reference
  • 10MHz 3-Wire SPI/QSPI/MICROWIRE-Compatible Interface
  • Space-Saving 28-Pin 5mm x 5mm Thin QFN Package
MAX1226, MAX1228, MAX1230: Functional Diagram
MAX1226, MAX1228, MAX1230: Functional Diagram
Applications/Uses
  • Data Acquisition Systems
  • Data Logging
  • Industrial Control Systems
  • Instrumentation
  • Patient Monitoring
  • System Supervision
DataSheet
titleDownload file
MAX1226-MAX1230 Data SheetMAX1226-MAX1230.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
MAX1226128300SARSPIBoth4.09615.254.0962.04870-821QSOP/16$8.02 @1k
MAX122812QSOP/20$8.22 @1k
MAX123016QSOP/24
TQFN/28
$8.43 @1k
Design kits & evaluation modules
Quality and Environmental Data
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
MAX1228ACEPNo Longer AvailableMAX1228BCEP+QSOP,;20 pin;54.2 mm²0°C to +70°CNo
MAX1228ACEP+No Longer AvailableMAX1228BCEP+QSOP,;20 pin;54.2 mm²0°C to +70°CLead Free
MAX1228ACEP+TNo Longer AvailableMAX1228BCEP+QSOP;20 pin0°C to +70°CSee data sheet
MAX1228ACEP-TNo Longer AvailableMAX1228BCEP+QSOP;20 pin0°C to +70°CSee data sheet
MAX1228AEEPNo Longer AvailableMAX1228BEEP+QSOP,;20 pin;54.2 mm²-40°C to +85°CNo
MAX1228AEEP+No Longer AvailableMAX1228BEEP+QSOP,;20 pin;54.2 mm²-40°C to +85°CLead Free
MAX1228AEEP+TNo Longer AvailableMAX1228BEEP+QSOP;20 pin-40°C to +85°CSee data sheet
MAX1228AEEP-TNo Longer AvailableMAX1228BEEP+QSOP;20 pin-40°C to +85°CSee data sheet
MAX1228BCEPNo Longer AvailableMAX1228BCEP+QSOP;20 pin0°C to +70°CSee data sheet
MAX1228BCEP+ActiveQSOP,;20 pin;54.2 mm²0°C to +70°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1228BCEP+TActiveQSOP,;20 pin;54.2 mm²0°C to +70°CLead Free
MAX1228BCEP-TNo Longer AvailableMAX1228BCEP+TQSOP;20 pin0°C to +70°CSee data sheet
MAX1228BEEPNo Longer AvailableMAX1228BEEP+QSOP;20 pin-40°C to +85°CSee data sheet
MAX1228BEEP+ActiveQSOP,;20 pin;54.2 mm²-40°C to +85°CLead Free
MAX1228BEEP+TActiveQSOP,;20 pin;54.2 mm²-40°C to +85°CLead Free
MAX1228BEEP-TNo Longer AvailableMAX1228BEEP+TQSOP;20 pin-40°C to +85°CSee data sheet
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