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Data Converters 
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Analog-to-Digital Converters
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MAX1118
Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs
Industry's Lowest-Power ADC Comes in SOT23
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Key Features
Applications/Uses
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 |
| External VREF (V) (min) | 1 |
| External VREF (V) (max) | 5.5 |
| Unipolar VIN (V) (max) | 5.5 |
| INL (±LSB) | 1 |
| Package/Pins | SOT23/8 |
| Budgetary Price (See Notes) | 0.9 |
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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 |
| External VREF (V) (min) | 1 |
| External VREF (V) (max) | 5.5 |
| Unipolar VIN (V) (max) | 5.5 |
| INL (±LSB) | 1 |
| Package/Pins | SOT23/8 |
| Budgetary Price (See Notes) | 0.9 |
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.
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.
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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