The LTC2635 is a family of quad 12-, 10-, and 8-bit voltage-output DACs with an integrated, high-accuracy, low-drift reference in a 16-pin QFN or a 10-lead MSOP package. It has rail-to-rail output buffers and is guaranteed monotonic. The LTC2635-L has a full-scale output of 2.5V, and operates from a single 2.7V to 5.5V supply. The LTC2635-H has a full-scale output of 4.096V, and operates from a 4.5V to 5.5V supply. Each DAC can also operate with an external reference, which sets the fullscale output to the external reference voltage.
These DACs communicate via a 2-wire I2C-compatible serial interface. The LTC2635 operates in both the standard mode (clock rate of 100kHz) and the fast mode (clock rate of 400kHz). The LTC2635 incorporates a power-on reset circuit. Options are available for reset to zero-scale, reset to mid-scale in internal reference mode, reset to mid-scale in external reference mode, or reset with all DAC outputs in a high-impedance state after power-up.
Feature
- Integrated Precision Reference
- 2.5V Full-Scale 10ppm/°C (LTC2635-L)
- 4.096V Full-Scale 10ppm/°C (LTC2635-H)
- Maximum INL Error: ±2.5 LSB (LTC2635-12)
- Power-On-Reset to Zero-Scale/Mid-Scale/Hi-Z
- Low Noise: 0.75mVP-P 0.1Hz to 200kHz
- Guaranteed Monotonic Over –40°C to 125°C Automotive Temperature Range
- Selectable Internal or External Reference
- 2.7V to 5.5V Supply Range (LTC2635-L)
- Ultralow Crosstalk Between DACs (3nV•s)
- Low Power: 0.6mA at 3V
- Double-Buffered Data Latches
- Small 16-Pin 3mm × 3mm QFN and 10-Lead MSOP Packages
Applications
- Mobile Communications
- Process Control and Industrial Automation
- Power Supply Margining
- Portable Equipment
- Automotive
