MAX1284:400ksps/300ksps, Single-Supply, Low-Power, Serial 12-Bit ADCs with Internal Reference

The MAX1284/MAX1285 12-bit analog-to-digital converters (ADCs) combine a high-bandwidth track/hold (T/H), a serial interface with high conversion speed, an internal +2.5V reference, and low power consumption. The MAX1284 operates from a single +4.5V to +5.5V supply; the MAX1285 operates from a single +2.7V to +3.6V supply. The 3-wire serial interface connects directly to SPI™/QSPI™/MICROWIRE™ devices without external logic. The devices use an external serial-interface clock to perform successive-approximation analog-to-digital conversions. Low power, ease of use, and small package size make these converters ideal for remote-sensor and data-acquisition applications or for other circuits with demanding power consumption and space requirements. The MAX1284/MAX1285 are available in 8-pin SO packages. These devices are pin-compatible, higher-speed versions of the MAX1240/MAX1241; for more information, refer to the respective data sheets.

Key Features
  • Single-Supply Operation
    • +4.5V to +5.5V (MAX1284)
    • +2.7V to +3.6V (MAX1285)
  • ±1 LSB (max) DNL, ±1 LSB (max) INL
  • 400ksps Sampling Rate (MAX1284)
  • Internal Track/Hold
  • Internal +2.5V Reference
  • Low Power: 2.5mA (400ksps)
  • SPI/QSPI/MICROWIRE 3-Wire Serial Interface
  • Pin-Compatible, High-Speed Upgrades to MAX1240/MAX1241
  • 8-Pin SO Package
MAX1284, MAX1285, MAX1285B: Typical Operating Circuit
MAX1284, MAX1285, MAX1285B: Typical Operating Circuit
Applications/Uses
  • Battery-Powered Applications
  • Data Acquisition
  • Medical Instruments
  • Pen Digitizers
  • Portable Data Logging
  • Process Control
DataSheet
titleDownload file
MAX1284-MAX1285B Data SheetMAX1284-MAX1285B.pdf
Parametrics
Part NumberResolution
(bits)
Input Chan.Conv. Rate
(ksps)
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
(V)
Unipolar VIN
(V)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxnominalmaxSee Notes
MAX1284121400SARSPIS.E. Only2.52.5-801SOIC(N)/8$8.81 @1k
MAX1285300SOIC(N)/8
Design kits & evaluation modules
Related Products
  • MAX1393:1.5V to 3.6V, 312.5ksps, 1-Channel True-Differential/2-Channel Single-Ended, 12-Bit, SAR ADCs
  • MAX1288:150ksps, 12-Bit, 2-Channel Single-Ended, and 1-Channel True-Differential ADCs
  • MAX1283:300ksps/400ksps, Single-Supply, 4-Channel, Serial 12-Bit ADCs with Internal Reference
  • MAX1282:300ksps/400ksps, Single-Supply, 4-Channel, Serial 12-Bit ADCs with Internal Reference
  • MAX145:+2.7V, Low-Power, 2-Channel, 108ksps, Serial 12-Bit ADCs in 8-Pin µMAX
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1284ACSANo Longer AvailableMAX1284ACSA+SOIC(N),;8 pin;30.9 mm²0°C to +70°CNo
MAX1284ACSA+ActiveSOIC(N),;8 pin;30.9 mm²0°C to +70°CLead Free
MAX1284ACSA+TActiveN.SO;8 pin0°C to +70°CSee data sheet
MAX1284ACSA-TNo Longer AvailableMAX1284ACSA+TN.SO;8 pin0°C to +70°CSee data sheet
MAX1284AESANo Longer AvailableMAX1284AESA+SOIC(N),;8 pin;30.9 mm²-40°C to +85°CNo
MAX1284AESA+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX1284AESA+TActiveN.SO;8 pin-40°C to +85°CSee data sheet
MAX1284AESA-TNo Longer AvailableMAX1284AESA+TN.SO;8 pin-40°C to +85°CSee data sheet
MAX1284BCSANo Longer AvailableMAX1284BCSA+SOIC(N),;8 pin;30.9 mm²0°C to +70°CNo
MAX1284BCSA+ActiveSOIC(N),;8 pin;30.9 mm²0°C to +70°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1284BCSA+TActiveSOIC(N),;8 pin;30.9 mm²0°C to +70°CLead Free
MAX1284BCSA-TNo Longer AvailableMAX1284BCSA+TSOIC(N),;8 pin;30.9 mm²0°C to +70°CNo
MAX1284BESANo Longer AvailableMAX1284BESA+SOIC(N),;8 pin;30.9 mm²-40°C to +85°CNo
MAX1284BESA+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX1284BESA+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX1284BESA-TNo Longer AvailableMAX1284BESA+TN.SO;8 pin-40°C to +85°CSee data sheet
MAX1284-MAX1285B.pdf MAX1285B
MAX1284-MAX1285B.pdf MAX1285B