LTC2631 2 Single 12-/10-/8-Bit I C V DACs with OUT 10ppm/C Reference Features Description n Integrated Precision Reference The LTC 2631 is a family of 12-, 10-, and 8-bit voltage- 2.5V Full-Scale 10ppm/C (LTC2631-L) output DACs with an integrated, high accuracy, low-drift 4.096V Full-Scale 10ppm/C (LTC2631-H) reference in an 8-lead TSOT-23 package. It has a rail-to- n Maximum INL Error: 1LSB (LTC2631A-12) rail output buffer that is guaranteed monotonic. n Bidirectional Reference: Input or 10ppm/C Output The LTC2631-L has a full-scale output of 2.5V, and oper- 2 n 400kHz I C Interface ates from a single 2.7V to 5.5V supply. The LTC2631-H n Nine Selectable Addresses (LTC2631-Z) has a full-scale output of 4.096V, and operates from a n Low Noise (0.7mV , 0.1Hz to 200kHz) P-P 4.5V to 5.5V supply. A 10ppm/C reference output is avail- n Guaranteed Monotonic Over Temperature able at the REF pin. n 2.7V to 5.5V Supply Range (LTC2631-L) n Each DAC can also operate in External Reference mode, Low Power Operation: 180A at 3V n in which a voltage supplied to the REF pin sets the full- Power Down to 1.8A Maximum (C and I Grades) n scale output. Power-On Reset to Zero or Mid-Scale Options n Double-Buffered Data Latches 2 The LTC2631 DACs use a 2-wire, I C-compatible serial n Guaranteed Operation from 40C to 125C (H-Grade) interface. The LTC2631 operates in both the standard n 8-Lead TSOT-23 (ThinSOT) Package mode (clock rate of 100kHz) and the fast mode (clock rate of 400kHz). a The LTC2631 incorporates a power-on reset circuit. n Mobile Communications Op-tions are available for reset to zero-scale or reset to n Process Control and Industrial Automation mid-scale after power-up. n Automatic Test Equipment L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and n ThinSOT is a trademark of Analog Devices, Inc. All other trademarks are the property of their Portable Equipment respective owners. Protected by U.S. Patents including 5396245, 5859606, 6891433, 6937178 n Automotive and 7414561. n Optical Networking Block Diagram (LTC2631-M) V REF CC 2 Integral Nonlinearity (LTC2631A-LM12) I C CA0 ADDRESS INTERNAL 1.0 REF SEL DECODE V = 3V SWITCH CC REFERENCE V = 2.5V FS 0.5 CONTROL RESISTOR DECODE LOGIC SCL DIVIDER 0 2 I C INTERFACE DACREF SDA 0.5 V OUT INPUT DAC DAC REGISTER REGISTER 1.0 0 2048 3072 4095 1024 GND CODE 2631 TA01b 2631 TA01 2631fd 1 For more information www.linear.com/LTC2631 INL (LSB) pplicationsLTC2631 aB solute m aximum r (Notes 1, 2) Supply Voltage (V ) ................................... 0.3V to 6V Maximum Junction Temperature .......................... 150C CC REF SEL, SCL, SDA ..................................... 0.3V to 6V Storage Temperature Range .................. 65C to 150C V , CA0, CA1, REF .........0.3V to Min(V + 0.3V, 6V) Lead Temperature (Soldering, 10 sec) ...................300C OUT CC Operating Temperature Range LTC2631C ................................................ 0C to 70C LTC2631I .............................................40C to 85C LTC2631H .......................................... 40C to 125C p in c F LTC2631-Z LTC2631-M TOP VIEW TOP VIEW CA0 1 8 CA1 CA0 1 8 REF SEL SCL 2 7 V SCL 2 7 V OUT OUT SDA 3 6 REF SDA 3 6 REF GND 4 5 V GND 4 5 V CC CC TS8 PACKAGE TS8 PACKAGE 8-LEAD PLASTIC TSOT-23 8-LEAD PLASTIC TSOT-23 T = 150C (NOTE 5), = 195C/W T = 150C (NOTE 5), = 195C/W JMAX JA JMAX JA 2631fd 2 For more information www.linear.com/LTC2631 iguration on atings