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Data Converters 
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Analog-to-Digital Converters
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Key Features
Applications/Uses
Parametric specs for Precision ADCs (< 5Msps)
| Resolution (bits) (ADC) | 14 |
| # Input Channels | 2 |
| Conv. Rate (ksps) (max) | 0.05 |
| Data Bus | SPI |
| ADC Architecture | Sigma-Delta |
| Diff/S.E. Input | Both |
| External VREF (V) (min) | -5.3 |
| External VREF (V) (max) | 5.3 |
| Unipolar VIN (V) (max) | 3 |
| Bipolar VIN (±V) (max) | 2.75 |
| INL (±LSB) | 4.9 |
| Package/Pins | PDIP/16 SOIC (W)/16 SSOP/20 |
| Budgetary Price (See Notes) | 8.93 |
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Simplified Block Diagram
Technical Docs
| Data Sheet | Low-Cost, 2-Channel, ±14-Bit Serial ADCs | Nov 01, 1998 |
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Parameters
Parametric specs for Precision ADCs (<u><</u> 5Msps)
| Resolution (bits) (ADC) | 14 |
| # Input Channels | 2 |
| Conv. Rate (ksps) (max) | 0.05 |
| Data Bus | SPI |
| ADC Architecture | Sigma-Delta |
| Diff/S.E. Input | Both |
| External VREF (V) (min) | -5.3 |
| External VREF (V) (max) | 5.3 |
| Unipolar VIN (V) (max) | 3 |
| Bipolar VIN (±V) (max) | 2.75 |
| INL (±LSB) | 4.9 |
| Package/Pins | PDIP/16 SOIC (W)/16 SSOP/20 |
| Budgetary Price (See Notes) | 8.93 |
Key Features
- Single +5V Supply (MAX111)
- Two Differential Input Channels
- 14-Bit Resolution Plus Sign and Overrange
- 0.03% Linearity (MAX110)
0.05% Linearity (MAX111) - Low Power Consumption:
- 550µA (MAX110)
- 640µA (MAX111)
- 4µA Shutdown Current
- Up to 50 Conversions/sec
- 50Hz/60Hz Rejection
- Auto-Calibration Mode
- No External Components Required
- 16-Pin DIP/SO, 20-Pin SSOP
Applications/Uses
- Data Acquisition
- Panel Meters
- Process Control
- Temperature Measurement
- Weigh Scales
Description
The MAX110/MAX111 analog-to-digital converters (ADCs) use an internal auto-calibration technique to achieve 14-bit resolution plus overrange, with no external components. Operating supply current is only 550µA (MAX110) and reduces to 4µA in power-down mode, making these ADCs ideal for high-resolution battery-powered or remote-sensing applications. A fast serial interface simplifies signal routing and opto-isolation, saves microcontroller pins, and offers compatibility with SPI™, QSPI™, and MICROWIRE™. The MAX110 operates with ±5V supplies, and converts differential analog signals in the -3V to +3V range. The MAX111 operates with a single +5V supply and converts differential analog signals in the ±1.5V range, or single-ended signals in the 0V to +1.5V range.
Internal calibration allows for both offset and gain-error correction under microprocessor (µP) control. Both devices are available in space-saving 16-pin DIP and SO packages, as well as an even smaller 20-pin SSOP package.
Internal calibration allows for both offset and gain-error correction under microprocessor (µP) control. Both devices are available in space-saving 16-pin DIP and SO packages, as well as an even smaller 20-pin SSOP package.
Technical Docs
| Data Sheet | Low-Cost, 2-Channel, ±14-Bit Serial ADCs | Nov 01, 1998 |
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 .
Request a Quote