LTC2666 Octal 16-Bit/12-Bit 10V V SoftSpan DACs with OUT 10ppm/C Max Reference Features Description n Precision Reference 10ppm/C Max The LTC 2666 is a family of 8-channel, 16-/12-bit 10V n Independently Programmable Output Ranges: digital-to-analog converters with integrated precision 0V to 5V, 0V to 10V, 2.5V, 5V, 10V references. They are guaranteed monotonic and have n Full 16-Bit/12-Bit Resolution at All Ranges built-in rail-to-rail output buffers. These SoftSpan DACs n Maximum INL Error: 4LSB at 16 Bits offer five output ranges up to 10V. The range of each n A/B Toggle via Software or Dedicated Pin channel is independently programmable, or the part can n 8:1 Analog Multiplexer be hardware-configured for operation in a fixed range. n Guaranteed Monotonic Over Temperature The integrated 2.5V reference is buffered separately to each n Internal or External Reference channel an external reference can be used for additional n Outputs Drive 10mA Guaranteed range options. The LTC2666 also includes A/B toggle n 1.8V to 5V SPI Serial interface capability via a dedicated pin or software toggle command. n 32-Lead (5mm 5mm) QFN Package The SPI/Microwire-compatible 3-wire serial interface operates on logic levels as low as 1.71V at clock rates a up to 50MHz. n Optical Networking L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and n Instrumentation SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Data Acquisition n Automatic Test Equipment n Process Control and Industrial Automation Block Diagram Integral Nonlinearity (LTC2666-16) REFCOMP 26 INTERNAL REFERENCE 25 REF 4 30 28 OVRTMP V CC 10V RANGE V V GND REF REF 24 CLR 3 11, 29 + V 7 REFLO 2 10, 27 MUX MUX 8 V 1 V 2 DAC 0 DAC 7 23 V OUT0 OUT7 0 1 V V OUT1 3 22 OUT6 2 V V REF REF V V OUT2 4 21 OUT5 3 MUX MUX 4 0 16384 32768 49152 65535 V 5 DAC 3 DAC 4 20 V CODE OUT3 OUT4 2666 TA01b 12 LDAC CS/LD 13 TGP 17 SCK 14 CONTROL LOGIC DECODE 31 MSP0 SDI 16 32 MSP1 32-BIT SHIFT REGISTER POWER-ON RESET SDO 15 1 MSP2 MUXOUT 9 MONITOR MUX TOGGLE SELECT REGISTER 18 IOV CC 2666 TA01a 2666f 1 For more information www.linear.com/LTC2666 SPAN REGISTER SPAN REGISTER SPAN SPAN RGSTR B RGSTR A RGSTR B RGSTR A RGSTR B RGSTR A RGSTR B RGSTR A SPAN SPAN SPAN REGISTER SPAN REGISTER INL (LSB) pplicationsLTC2666 aB solute m aximum r p in c F (Notes 1, 2) TOP VIEW Analog Supply Voltage (V ) ....................... 0.3V to 6V CC Digital I/O Voltage (IOV ) ........................... 0.3V to 6V CC REFLO ....................................................... 0.3V to 0.3V + 32 31 30 29 28 27 26 25 V ............................................................ 0.3V to 16.5V MSP2 1 24 CLR V ..........................................................16.5V to 0.3V V 2 23 V OUT0 OUT7 CS/LD, SCK, SDI, LDAC, CLR, TGP .............. 0.3V to 6V V V 3 22 OUT1 OUT6 MSP0, MSP1, MSP2 ........0.3V to Min (V + 0.3V, 6V) CC V 4 21 V OUT2 OUT5 33 V to V , OUT0 OUT7 V 5 20 V OUT3 OUT4 + MUXOUT ............... V 0.3V to V + 0.3V (Max 16.5V) DNC 6 19 DNC + REF, REFCOMP ................0.3V to Min (V + 0.3V, 6V) V 7 18 IOV CC CC V 8 17 TGP SDO ............................. 0.3V to Min (IOV + 0.3V, 6V) CC 9 10 11 12 13 14 15 16 OVRTMP ....................................................... 0.3V to 6V Operating Temperature Range LTC2666C ................................................ 0C to 70C LTC2666I .............................................40C to 85C UH PACKAGE 32-LEAD (5mm 5mm) PLASTIC QFN LTC2666H .......................................... 40C to 125C T = 150C, = 34C/W JMAX JA Maximum Junction Temperature .......................... 150C EXPOSED PAD IS V , MUST BE SOLDERED TO PCB Storage Temperature Range .................. 65C to 150C 2666f 2 For more information www.linear.com/LTC2666 MUXOUT MSP1 REFLO MSP0 GND OVRTMP LDAC GND CS/LD V CC SCK REFLO SDO REFCOMP SDI REF iguration on atings