MAX5318
18-Bit, High-Accuracy Voltage Output DAC with Digital Gain, Offset Control, and SPI Interface
Lowest Noise, Fast-Settling Precision 18-Bit DAC
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Key Features
Applications/Uses
| Resolution (bits) | 18 |
| # Channels | 1 |
| Interface | Serial - SPI |
| Output Type | Voltage- Buffered |
| Reference | Ext. |
| INL (±LSB) (max) | 2 |
| Supply Range (V) (min) | 2.7 |
| Supply Range (V) (max) | 5.5 |
| ICC (mA) (max) | 10 |
| Settling Time (µs) (typ) | 3 |
| Package/Pins | TSSOP/24 |
| Oper. Temp. (°C) | -40 to +105 |
| Budgetary Price (See Notes) | 22.53 |
Simplified Block Diagram
Technical Docs
| Data Sheet | 18-Bit, High-Accuracy Voltage Output DAC with Digital Gain, Offset Control, and SPI Interface | Sep 28, 2012 | |
| App Note | Bipolar Work Around for the MAXREFDES74# | ||
| App Note | Analog ICs for Low Voltage Systems |
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 .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
Parameters
| Resolution (bits) | 18 |
| # Channels | 1 |
| Interface | Serial - SPI |
| Output Type | Voltage- Buffered |
| Reference | Ext. |
| INL (±LSB) (max) | 2 |
| Supply Range (V) (min) | 2.7 |
| Supply Range (V) (max) | 5.5 |
| ICC (mA) (max) | 10 |
| Settling Time (µs) (typ) | 3 |
| Package/Pins | TSSOP/24 |
| Oper. Temp. (°C) | -40 to +105 |
| Budgetary Price (See Notes) | 22.53 |
Key Features
- Ideal for ATE and High-Precision Instruments
- INL Accuracy Guaranteed with ±2 LSB (max) Over Temperature
- Fast Settling Time (3µs) with 10kΩ || 100pF Load
- Safe Power-Up-Reset to Zero or Midscale DAC Output (Pin-Selectable)
- Predetermined Output Device State in Power-Up and Reset in System Design
- Negative Supply (AVSS) Option Allows Full INL and DNL Performance to 0V
- SPI Interface Compatible with 1.8V to 5.5V Logic
- High Integration Reduces Development Time and PCB Area
- Buffered Voltage Output Directly Drives 2kΩ Load Rail-to-Rail
- Integrated Reference Buffer
- No External Amplifiers Required
- Small 4.4mm × 7.8mm, 24-Pin TSSOP Package
Applications/Uses
- Automatic Test Equipment
- Automatic Tuning and Calibration
- Communication Systems
- Data-Acquisition Systems
- Gain and Offset Adjustment
- Medical Imaging
- Process Control and Servo Loops
- Programmable Voltage and Current Sources
- Test and Measurement Equipment
Description
The DAC voltage output is buffered resulting in a fast settling time of 3µs and a low offset and gain drift of ±0.5ppm/°C of FSR (typ). The force-sense output (OUT) maintains accuracy while driving loads with long lead lengths. Additionally, a separate AVSS supply, allows the output amplifier to go to 0V (GND) while maintaining full linearity performance.
The MAX5318 includes user-programmable digital gain and offset correction to enable easy system calibration.
At power-up, the device resets its outputs to zero or midscale. The wide 2.7V to 5.5V supply voltage range and integrated low-drift, low-noise reference buffer amplifier make for ease of use.
The MAX5318 features a 50MHz, 3-wire, SPI interface. The MAX5318 is available in a 24-lead TSSOP package and operates over the -40°C to +105°C temperature range.
Simplified Block Diagram
Technical Docs
| Data Sheet | 18-Bit, High-Accuracy Voltage Output DAC with Digital Gain, Offset Control, and SPI Interface | Sep 28, 2012 | |
| App Note | Bipolar Work Around for the MAXREFDES74# | ||
| App Note | Analog ICs for Low Voltage Systems |
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 .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
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