MAX1110:+2.7V, Low-Power, Multichannel, Serial, 8-Bit ADCs

Lowest-Power 8-Bit 4/8-Channel ADCs Have Internal Reference

The MAX1110/MAX1111 low-power, 8-bit, 8-channel analog-to-digital converters (ADCs) feature an internal track/hold, voltage reference, clock, and serial interface. They operate from a single 2.7V to 5.5V supply and consume only 85µA while sampling at rates up to 50ksps. The MAX1110's 8 analog inputs and the MAX1111's 4 analog inputs are software-configurable, allowing unipolar/bipolar and single-ended/differential operation. Successive-approximation conversions are performed using either the internal clock or an external serial-interface clock. The full-scale analog input range is determined by the 2.048V internal reference, or by an externally applied reference ranging from 1V to VDD. The 4-wire serial interface is compatible with the SPI™, QSPI™, and MICROWIRE™ serial-interface standards. A serial-strobe output provides the end-of-conversion signal for interrupt-driven processors. The MAX1110/MAX1111 have a software-programmable, 2µA automatic power-down mode to minimize power consumption. Using power-down, the supply current is reduced to 6µA at 1ksps, and only 52µA at 10ksps. Power-down can also be controlled using the active-low SHDN input pin. Accessing the serial interface automatically powers up the device. The MAX1110 is available in a 20-pin SSOP package. The MAX1111 is available in a small 16-pin QSOP package.

Key Features
  • 2.7V to 5.5V Single Supply
  • Low Power
    • 85µA at 50ksps
    • 6µA at 1ksps
  • 8-Channel Single-Ended or 4-Channel Differential Inputs (MAX1110)
  • 4-Channel Single-Ended or 2-Channel Differential Inputs (MAX1111)
  • Internal Track/Hold; 50kHz Sampling Rate
  • Internal 2.048V Reference
  • SPI/QSPI/MICROWIRE-Compatible Serial Interface
  • Software-Configurable Unipolar or Bipolar Inputs
  • Total Unadjusted Error
    • ±1 LSB (max)
    • ±0.3 LSB (typ)
MAX1110, MAX1111: Functional Diagram
MAX1110, MAX1111: Functional Diagram
Applications/Uses
  • 4mA to 20mA-Powered Remote Data-Acquisition Systems
  • Hand-Held Measurement Devices
  • Medical Instruments
  • Portable Data Logging
  • Solar-Powered Remote Systems
  • System Diagnostics
DataSheet
titleDownload file
MAX1110-MAX1111 Data SheetMAX1110-MAX1111.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
MAX11108850SARSPIBoth2.04815.52.0481.02449-700.2CDIP(N)/20
PDIP(N)/20
SSOP/20
$2.07 @1k
MAX11114CDIP(N)/16
PDIP(N)/16
QSOP/16
$2.43 @1k
Design kits & evaluation modules
Related Products
  • MAX1103:8-Bit CODECs
  • MAX1106:Single-Supply, Low-Power, Serial 8-Bit ADCs
  • MAX1107:Single-Supply, Low-Power, Serial 8-Bit ADCs
  • MAX1108:Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs
  • MAX1109:Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs
  • MAX1112:+5V, Low-Power, Multichannel, Serial 8-Bit ADCs
  • MAX1113:+5V, Low-Power, Multichannel, Serial 8-Bit ADCs
  • MAX1111:+2.7V, Low-Power, Multichannel, Serial, 8-Bit ADCs
  • MAX1110:+2.7V, Low-Power, Multichannel, Serial, 8-Bit ADCs
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1110C/DNo Longer AvailableDICE;0°C to +70°CSee data sheet
MAX1110CAPNo Longer AvailableMAX1110CAP+SSOP,;20 pin;57.9 mm²0°C to +70°CNo
MAX1110CAP+ActiveSSOP,;20 pin;57.9 mm²0°C to +70°CLead Free
MAX1110CAP+TActiveSSOP,;20 pin;57.9 mm²0°C to +70°CLead Free
MAX1110CAP-TNo Longer AvailableMAX1110CAP+TSSOP;20 pin0°C to +70°CSee data sheet
MAX1110CPPNo Longer AvailableMAX1110CAP+PDIP(N),;20 pin;217.1 mm²0°C to +70°CNo
MAX1110CPP+No Longer AvailableMAX1110CAP+PDIP(N),;20 pin;217.1 mm²0°C to +70°CLead Free
MAX1110EAPNo Longer AvailableMAX1110EAP+SSOP,;20 pin;57.9 mm²-40°C to +85°CNo
MAX1110EAP+ActiveSSOP,;20 pin;57.9 mm²-40°C to +85°CLead Free
MAX1110EAP+TActiveSSOP,;20 pin;57.9 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1110EAP-TNo Longer AvailableMAX1110EAP+TSSOP,;20 pin;57.9 mm²-40°C to +85°CNo
MAX1110EPPNo Longer AvailableMAX1110EAP+PDIP(N),;20 pin;217.1 mm²-40°C to +85°CNo
MAX1110EPP+No Longer AvailableMAX1110EAP+PDIP(N),;20 pin;217.1 mm²-40°C to +85°CLead Free
MAX1110EVL11-DIPNo Longer AvailableSee data sheet
MAX1110MJPNo Longer AvailableCDIP(N),;20 pin;218.9 mm²-55°C to +125°CNo
MAX1110-MAX1111.pdf MAX1111
MAX1110-MAX1111.pdf MAX1111