The LTC2640 is a family of 12-, 10-, and 8-bit voltage-output DACs with an integrated, high-accuracy, low-drift reference in an 8-lead TSOT-23 package. It has a rail-to-rail output buffer that is guaranteed monotonic. The LTC2640-L has a full-scale output of 2.5V, and operates from a single 2.7V to 5.5V supply. The LTC2640-H has a full-scale output of 4.096V, and operates from a 4.5V to 5.5V supply. A 10ppm/°C reference output is available at the REF pin. Each DAC can also operate in External Reference mode, in which a voltage supplied to the REF pin sets the fullscale output. The LTC2640 DACs use a SPI/MICROWIRE™ compatible 3-wire serial interface which operates at clock rates up to 50MHz. The LTC2640 incorporates a power-on reset circuit. Options are available for Reset to Zero-Scale or Reset to Mid-Scale after power-up. Applications * Mobile Communications * Process Control and Industrial Automation * Automatic Test Equipment * Portable Equipment * Automotive * Optical Networking * Integrated Precision Reference * 2.5V Full-Scale 10ppm/°C (LTC2640-L) * 4.096V Full-Scale 10ppm/°C (LTC2640-H) * Maximum INL Error: 1LSB (LTC2640A-12) * Bidirectional Reference: Input or 10ppm/°C Output * Low Noise (0.7mVpp, 0.1Hz to 200kHz) * Guaranteed Monotonic Over Temperature * 2.7V to 5.5V Supply Range (LTC2640-L) * Low Power Operation: 180μA at 3V * Power Down to 1.8μA Maximum (C and I Grades) * Asynchronous DAC Clear Pin (LTC2640-Z) * Power-On Reset to Zero or Mid-Scale options * Double-Buffered Data Latches * Guaranteed Operation from –40°C to 125°C (H-Grade) * 8-Lead TSOT-23 (ThinSOT™) Package https://elecena.pl/product/4479265/single-12-10-8-bit-spi-v-dacs-with-10ppm-c-reference 2013-10-30 https://elecena.pl/product/4479265/single-12-10-8-bit-spi-v-dacs-with-10ppm-c-reference 2017-10-28 https://elecena.pl/product/4479265/single-12-10-8-bit-spi-v-dacs-with-10ppm-c-reference 2025-01-20