Top

Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs

Industry's Lowest-Power ADC Comes in SOT23

Product Details

Key Features

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 8
# Input Channels 2
Conv. Rate (ksps) (max) 100
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 2.048
Unipolar VIN (V) (max) 2.048
INL (±LSB) 1
Package/Pins SOT23/8
Budgetary
Price (See Notes)
1.16
View Less

Simplified Block Diagram

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 8
# Input Channels 2
Conv. Rate (ksps) (max) 100
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 2.048
Unipolar VIN (V) (max) 2.048
INL (±LSB) 1
Package/Pins SOT23/8
Budgetary
Price (See Notes)
1.16

Key Features

  • Single Supply
    • +2.7V to +3.6V (MAX1117)
    • +2.7V to +5.5V (MAX1118)
    • +4.5V to +5.5V (MAX1119)
  • Internal Track/Hold: 100kHz Sampling Rate
  • Internal Reference
    • +2.048V (MAX1117)
    • +4.096V (MAX1119)
  • Reference Input Range: 0 to VDD (MAX1118)
  • SPI/QSPI/MICROWIRE-Compatible Serial Interface
  • Small 8-Pin SOT23 Package
  • Automatic Power-Down
  • Analog Input Range: 0 to VREF
  • Low Power
    • 175µA at 100ksps (typ) (MAX1117/MAX1119)
    • 135µA at 100ksps (typ) (MAX1118)
    • 18µA at 10ksps (typ)
    • 1µA (typ) in Power-Down Mode

Applications/Uses

  • 4mA to 20mA Powered Remote Data Acquisition Systems
  • Battery-Powered Test Equipment
  • Low-Power, Handheld Portable Devices
  • Receive Signal Strength Indicators
  • Solar-Powered Remote Systems
  • System Diagnostics

Description

The MAX1117/MAX1118/MAX1119 low-power, 8-bit, dual-channel, analog-to-digital converters (ADCs) feature an internal track/hold (T/H) voltage reference (MAX1117/MAX1119), clock, and serial interface. The MAX1118 is specified from +2.7V to +5.5V and consumes only 135µA at 100ksps. The MAX1117 is specified from +2.7V to +3.6V, and the MAX1119 is specified from +4.5V to +5.5V, each consumes only 175µA at 100ksps.

The full-scale analog input range is determined by the internal reference of +2.048V (MAX1117) or +4.096V (MAX1119), or by an externally applied reference ranging from +1V to VDD (MAX1118). All devices feature an automatic shutdown mode that reduces supply current to < 1µA when the device is not in use. The 3-wire serial interface directly connects to SPI™, QSPI™, and MICROWIRE™ devices without external logic. Conversions up to 100ksps are performed using an internal clock.

The MAX1117/MAX1118/MAX1119 are available in an 8-pin SOT23 package with a footprint that is only 11% of an 8-pin plastic DIP.

Simplified Block Diagram

MAX1117, MAX1118, MAX1119: Typical Operating Circuit MAX1117, MAX1118, MAX1119: Typical Operating Circuit Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .