LTC2668
16-Channel 16-/12-Bit ±10V VOUT SoftSpan DACs with 10ppm/°C Max Reference
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Features
- Precision Reference 10ppm/°C Max
- Independently Programmable Output Ranges: 0V to 5V, 0V to 10V, ±2.5V, ±5V, ±10V
- Full 16-Bit/12-Bit Resolution at All Ranges
- Maximum INL Error: ±4LSB at 16 Bits
- A/B Toggle via Software or Dedicated Pin
- 16:1 Analog Multiplexer
- Guaranteed Monotonic Over Temperature
- Internal or External Reference
- Outputs Drive ±10mA Guaranteed
- 1.8V to 5V SPI Serial interface
- 6mm × 6mm 40-Lead QFN Package
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The LTC2668 is a family of 16-channel, 16-/12-bit ±10V digital-to-analog converters with integrated precision references. They are guaranteed monotonic and have built-in rail-to-rail output buffers. These SoftSpan™ DACs offer five output ranges up to ±10V. The range of each channel is independently programmable, or the part can be hardware-configured for operation in a fixed range.
The integrated 2.5V reference is buffered separately to each channel; an external reference can be used for additional range options. The LTC2668 also includes A/B toggle capability via a dedicated pin or software toggle command.
The SPI/Microwire-compatible 3-wire serial interface operates on logic levels as low as 1.71V at clock rates up to 50MHz.
Applications
- Optical Networking
- Instrumentation
- Data Acquisition
- Automatic Test Equipment
- Process Control and Industrial Automation
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LTC2668
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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
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40-Lead QFN (6mm x 6mm x 0.75mm w/ EP)
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Dec 21, 2022
- 22_0230
LTC2668 Datasheet Limit Change
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Software & Part Ecosystem
| Parts | Product Life Cycle | Description | ||
|---|---|---|---|---|
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I²C Isolators1 |
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PRODUCTION |
SPI/Digital or I2C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power |
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Simultaneous Sampling A/D Converters1 |
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PRODUCTION |
Octal, 18-Bit, 200ksps Differential ±10.24V Input SoftSpan ADC with Wide Input Common Mode Range |
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Request a Driver/SoftwareEvaluation Kits 2
DC2025A-A
LTC2668-16 Demoboard | 16-Channel 16-Bit ±10V VOUT SoftSpan DAC with 10ppm/°C Max Reference (requires DC2026)
Product Detail
Demonstration circuit 2025A features the LTC2668, 16-channel 16-Bit/12-Bit ±10V VOUT SoftSpan™ DACs with 10ppm/°C max reference in a 6mm × 6mm QFN package. This device features per-channel SoftSpan configuration with five output ranges: 0V to 5V, 0V to 10V, ±2.5V, ±5V, and ±10V. A toggle feature allows any or all DACs to switch between two programmed codes via a single SPI command or by the TGP input pin. The versatile SPI interface can operate on any logic level between 1.71V and 5.5V, for easy interface to lower voltage microcontrollers or FPGAs.
Resources
DC2025A-B
LTC2668-12 Demo Board | 16-Channel 12-Bit ±10V VOUT SoftSpan DAC with 10ppm/°C Max Reference (requires DC2026)
Product Detail
Demonstration circuit 2025A features the LTC2668, 16-channel 16-Bit/12-Bit ±10V VOUT SoftSpan™ DACs with 10ppm/°C max reference in a 6mm × 6mm QFN package. This device features per-channel SoftSpan configuration with five output ranges: 0V to 5V, 0V to 10V, ±2.5V, ±5V, and ±10V. A toggle feature allows any or all DACs to switch between two programmed codes via a single SPI command or by the TGP input pin. The versatile SPI interface can operate on any logic level between 1.71V and 5.5V, for easy interface to lower voltage microcontrollers or FPGAs.
Resources
Tools & Simulations 3
Linduino 3
Linduino
Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.
Linduino code repository on GitHub and instructions on how to use the code.
Linduino
IBIS Model 1
