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LTC2634IMSE-HZ12TRPBF Datasheet(PDF) 1 Page - Linear Technology |
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LTC2634IMSE-HZ12TRPBF Datasheet(HTML) 1 Page - Linear Technology |
1 / 30 page LTC2634 1 2634fb BLOCK DIAGRAM FEATURES APPLICATIONS DESCRIPTION Quad 12-/10-/8-Bit Rail-to-Rail DACs with 10ppm/°C Reference The LTC®2634 is a family of quad 12-, 10- and 8-bit volt- age output DACs with an integrated, high accuracy, low drift 10ppm/°C reference in 16-lead QFN and 10-lead MSOP packages. It has rail-to-rail output buffers and is guaranteed monotonic. The LTC2634-L has a full-scale output of 2.5V, and operates from a single 2.7V to 5.5V supply. The LTC2634-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 full-scale output to the external reference voltage. These DACs communicate via an SPI/MICROWIRE compat- ible 3-wire serial interface which operates at clock rates up to 50MHz. Serial data output (SDO), a hardware clear (CLR), and an asynchronous DAC update (LDAC) capability are available in the QFN package. The LTC2634 incorporates a power-on reset circuit. Options are available for reset to zero-scale or reset to mid-scale in internal reference mode, or reset to mid-scale in external reference mode after power-up. Integral Nonlinearity (LTC2634-LZ12) n Integrated Precision Reference 2.5V Full-Scale 10ppm/°C (LTC2634-L) 4.096V Full-Scale 10ppm/°C (LTC2634-H) n Maximum INL Error: ±2.5 LSB (LTC2634-12) n Low Noise: 0.75mVP-P 0.1Hz to 200KHz n Guaranteed Monotonic over –40°C to 125°C Temperature Range n Selectable Internal or External Reference n 2.7V to 5.5V Supply Range (LTC2634-L) n Ultralow Crosstalk Between DACs (2.4nV•s) n Low Power: 0.6mA at 3V n Power-On Reset to Zero-Scale/Mid-Scale n Double Buffered Data Latches n Tiny 16-Lead 3mm × 3mm QFN and 10-Lead MSOP Packages n Mobile Communications n Process Control and Industrial Automation n Automatic Test Equipment n Portable Equipment n Automotive DAC A VOUTA (REFLO) CS/LD SCK ( ) QFN PACKAGE ONLY (LDAC) GND VOUTB VREF DAC D DAC B DAC C VREF VOUTD REF VCC VREF VOUTC SWITCH INTERNAL REFERENCE 32-BIT SHIFT REGISTER DECODE CONTROL LOGIC POWER-ON RESET SDI 2634 BD (SDO) (CLR) CODE 0 0 1 4095 2634 TA01 –1 –2 1024 2048 3072 2 VCC = 3V INTERNAL REF L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 5396245, 5859606, 6891433, 6937178, 7414561. |
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