LTC2632 Dual 12-/10-/8-Bit SPI V DACs with OUT 10ppm/C Reference FEATURES DESCRIPTION n Integrated Precision Reference The LTC 2632 is a family of dual 12-, 10-, and 8-bit voltage- 2.5V Full-Scale 10ppm/C (LTC2632-L) output DACs with an integrated, high-accuracy, low-drift 4.096V Full-Scale 10ppm/C (LTC2632-H) reference in an 8-lead TSOT-23 package. It has rail-to-rail n Maximum INL Error: 1LSB (LTC2632A-12) output buffers and is guaranteed monotonic. n Low Noise: 0.75mV 0.1Hz to 200kHz P-P The LTC2632-L has a full-scale output of 2.5V, and operates n Guaranteed Monotonic 40C to 125C Automotive from a single 2.7V to 5.5V supply. The LTC2632-H has a Temperature Range full-scale output of 4.096V, and operates from a 4.5V to n Selectable Internal or External Reference 5.5V supply. Each DAC can also operate with an external n 2.7V to 5.5V Supply Range (LTC2632-L) reference, which sets the full-scale output to the external n Low Power Operation 0.4mA at 3V reference voltage. n Power-On-Reset to Zero-Scale/Mid-Scale n These DACs communicate via a simple SPI/MICROWIRE Double-Buffered Data Latches n compatible 3-wire serial interface which operates at clock 8-Lead ThinSOT Package rates up to 50MHz. The LTC2632 incorporates a power-on reset circuit. Options are available for reset to zero-scale APPLICATIONS or reset to mid-scale in internal reference mode, or reset to mid-scale in external reference mode after power-up. n Mobile Communications L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n Process Control and Industrial Automation Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other n trademarks are the property of their respective owners. Protected by U.S. Patents including Automatic Test Equipment 5396245, 5859606, 6891433, and 6937178. n Portable Equipment n Automotive BLOCK DIAGRAM Integral Nonlinearity (LTC2632A-LZ12) REF 2 INTERNAL GND V = 3V SWITCH CC REFERENCE INTERNAL REF. V REF 1 V CC V V OUTA OUTB 0 DAC A DAC B 1 SDI CS/LD CONTROL DECODE LOGIC 2 0 1024 2048 3072 4095 CODE SCK 2632 TA01 POWER-ON 32-BIT SHIFT REGISTER RESET 2632 BD 2632fa 1 REGISTER REGISTER REGISTER REGISTER INL (LSB)LTC2632 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1, 2) TOP VIEW Supply Voltage (V ) ................................... 0.3V to 6V CC SCK 1 8 SDI SCK, SDI ...................................................... 0.3V to 6V CS/LD 2 7 V CC CS/LD (Note 11) ...............0.3V to Min (V + 0.3V, 6V) REF 3 6 V CC OUTB GND 4 5 V OUTA V , V ...................0.3V to Min (V + 0.3V, 6V) OUTA OUTB CC TS8 PACKAGE REF ..................................0.3V to Min (V + 0.3V, 6V) CC 8-LEAD PLASTIC TSOT-23 Operating Temperature Range T = 150C (NOTE 6), = 195C/W JMAX JA LTC2632C ................................................ 0C to 70C LTC2632H (Note 3) ............................ 40C to 125C Maximum Junction Temperature .......................... 150C Storage Temperature Range .................. 65C to 150C Lead Temperature (Soldering, 10 sec) ...................300C ORDER INFORMATION LTC2632 A C TS8 L Z 12 TRM PBF LEAD FREE DESIGNATOR TAPE AND REEL TR = 2,500-Piece Tape and Reel TRM = 500-Piece Tape and Reel RESOLUTION 12 = 12-Bit 10 = 10-Bit 8 = 8-Bit POWER-ON RESET I = Reset to Mid-Scale in Internal Reference Mode X = Reset to Mid-Scale in External Reference Mode (2632-L Only) Z = Reset to Zero-Scale in Internal Reference Mode FULL-SCALE VOLTAGE, INTERNAL REFERENCE MODE L = 2.5V H = 4.096V PACKAGE TYPE TS8 = 8-Lead Plastic TSOT-23 TEMPERATURE GRADE C = Commercial Temperature Range (0C to 70C) H = Automotive Temperature Range (40C to 125C) ELECTRICAL GRADE (OPTIONAL) A = 1LSB Maximum INL (12-Bit) PRODUCT PART NUMBER Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: