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Single-Supply, Low-Power, 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 1
Conv. Rate (ksps) (max) 100
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 4.096
Unipolar VIN (V) (max) 4.096
INL (±LSB) 1
Package/Pins SOT23/8
Budgetary
Price (See Notes)
1.12
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Simplified Block Diagram

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Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 8
# Input Channels 1
Conv. Rate (ksps) (max) 100
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 4.096
Unipolar VIN (V) (max) 4.096
INL (±LSB) 1
Package/Pins SOT23/8
Budgetary
Price (See Notes)
1.12

Key Features

  • Single Supply
    • +2.7V to +3.6V (MAX1115)
    • +4.5V to +5.5V (MAX1116)
  • Input Voltage Range: 0 to VREF
  • Internal Track/Hold; 100kHz Sampling Rate
  • Internal Reference
    • +2.048V (MAX1115)
    • +4.096V (MAX1116)
  • SPI/QSPI/MICROWIRE-Compatible Serial Interface
  • Small 8-Pin SOT23 Package
  • Automatic Power-Down
  • Low Power
    • 175µA at 100ksps
    • 18µA at +3V and 10ksps
    • 1µA 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
  • System Diagnostics

Description

The MAX1115/MAX1116 low-power, 8-bit, analog-to-digital converters (ADCs) feature an internal track/hold (T/H), voltage reference, VDD monitor, clock, and serial interface. The MAX1115 is specified from +2.7V to +5.5V, and the MAX1116 is specified from +4.5V to +5.5V. Both parts consume only 175µA at 100ksps.

The full-scale analog input range is determined by the internal reference of +2.048V (MAX1115) or +4.096V (MAX1116). The MAX1115/MAX1116 also feature AutoShutdown™ power-down mode which reduces power consumption 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 MAX1115/MAX1116 are available in an 8-pin SOT23 package with a footprint that is just 30% of an 8-pin SO.

Simplified Block Diagram

MAX1115, MAX1116: Typical Operating Circuit MAX1115, MAX1116: 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 .