Features and Benefits
- 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
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.
- Mobile Communications
- Process Control and Industrial Automation
- Power Supply Margining
- Portable Equipment
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (5)
DC1593A-C: Demo Board for LTC2635-12 Quad 12-Bit I2C VOUT DACs with 10ppm/°C Reference.
DC1593A-E: Demo Board for LTC2635-12 Quad 12-Bit I2C VOUT DACs with 10ppm/°C Reference.
DC1593A-A: Demo Board for the LTC2635-12 Quad 12-Bit I2C VOUT DACs with 10ppm/°C Reference.
DC1593A-B: Demo Board for the LTC2635-12 Quad 12-Bit I2C VOUT DACs with 10ppm/°C Reference.
DC1593A-D: Demo Board for LTC2635-12 Quad 12-Bit I2C VOUT DACs with 10ppm/°C Reference.
Documentation & Resources
R461 Reliability Data3/22/201831 K
DC1593A - Demo Manual8/25/2010193K
DAC Selector Card9/21/2015587K
PWM to DC in One Cycle8/7/2014509K
Voltage Output DACs3/3/2011797K
LTC263x Video Product Brief10/15/2018
Tools & Simulations
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Linduino code repository on GitHub and instructions on how to use the code.
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.