Analog Devices Inc. LTC2686 Voltage Output Softspan™ DACs
Analog Devices Inc. LTC2686 Voltage Output Softspan Digital-to-Analog Converters (DACs) are 8-channel, 16-bit, ±15V DACs with an integrated precision reference. The LTC2686 DACs are guaranteed monotonic and have built-in rail-to-rail output buffers that can source or sink up to 55mA. These SoftSpan™ DACs offer five output ranges up to ±15V. The range of each channel is independently programmable.
The internal 4.096V precision reference sets the accuracy of the output voltage. An external reference can be used for additional range options. Three toggle pins support Input Register A and Input Register B toggle or sinusoidal dither at multiple frequencies. An analog multiplexer simplifies the measurement of pin voltages, load currents, and junction temperature.
Programmable offset and gain registers of the Analog Devices Inc. LTC2686 improve the accuracy of the DAC outputs. The serial peripheral interface (SPI) and MICROWIRE™-compatible, 3-wire serial interface operate on logic levels as low as 1.71V and clock rates up to 50MHz.
Features
- Eight independent SoftSpan DAC channels
- Independently programmable output ranges: 0V to 5V, 0V to 10V, ±5V, ±10V, ±15V
- Full 16-bit resolution at all ranges
- Flexible single- or dual-supply operation
- ±3LSB maximum INL error
- Precision 4.096V reference, ±10ppm/°C maximum
- A/B toggle or sinusoidal dither using up to 3 toggle pins
- Multiplexer for output voltage and load current sense
- Outputs drive ±55mA guaranteed
- 6mm × 6mm, 40-lead LFCSP
Applications
- Optical networking
- Instrumentation
- Data acquisition
- Automatic test equipment
- Process control and industrial automation
Functional Block Diagram
Related product
Analog Devices Inc. DC2904A-B Evaluation Board
Completely featured board for the evaluation of LTC2686 multichannel voltage output DAC.