LTC2758 Dual Serial 18-Bit SoftSpan I DACs OUT Fea T Descrip T n Maximum 18-Bit INL Error: 1 LSB Over Temperature The LTC 2758 is a dual 18-bit multiplying serial-input, n Program or Pin-Strap Six Output Ranges: current-output digital-to-analog converter. LTC2758A 0V to 5V, 0V to 10V, 2.5V to 7.5V, 2.5V, 5V, 10V provides full 18-bit performance (INL and DNL of 1LSB n Guaranteed Monotonic Over Temperature maximum) over temperature without any adjustments. n Glitch Impulse 0.4nV s (3V), 2nV s (5V) 18-bit monotonicity is guaranteed in all performance n 18-Bit Settling Time: 2.1s grades. This SoftSpan DAC operates from a single 3V n 2.7V to 5.5V Single Supply Operation to 5V supply and offers six output ranges (up to 10V) n 1A Maximum Supply Current that can be programmed through the 3-wire SPI serial n Voltage-Controlled Offset and Gain Trims interface or pin-strapped for operation in a single range. n Serial Interface with Readback of All Registers Any on-chip register (including DAC output-range set- n Clear and Power-On-Reset to 0V Regardless of tings) can be read for verification in just one instruction Output Range cycle and if you change register content, the altered n 48-Pin 7mm 7mm LQFP Package register will be automatically read back during the next instruction cycle. a T Voltage-controlled offset and gain adjustments are also n Instrumentation provided and the power-on reset circuit and CLR pin both n Medical Devices reset the DAC outputs to 0V regardless of output range. n Automatic Test Equipment L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and n Process Control and Industrial Automation SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Typical a T Dual 18-Bit V DAC with Software-Selectable Ranges LTC2758 Integral Nonlinearity OUT REFERENCE 1.0 0V TO 10V RANGE 5V LT1012 0.8 GAIN A ADJUST 0.6 0.4 GE R REFA R R ADJA OFSA COMA INA 0.2 5V R FBA 0 27pF V DD I OUT1A 0.2 0.1F V OUTA DAC A I OUT2A 0.4 + LT1468 V 0.6 OSADJA 4 OFFSET A ADJUST SPI WITH LTC2758 R 0.8 FBB READBACK 27pF 1.0 I OUT1B 0 65536 131072 196608 262143 V I OUTB DAC B + CODE OUT2B 2758 TA01b LT1468 GND V OSADJB OFFSET B ADJUST GE R REFB R R ADJB OFSB COMB INB 2758 TA01a GAIN B ADJUST LT1012 REFERENCE 5V 2758fb 1 For more information www.linear.com/LTC2758 INL (LSB) + + ion pplica ions pplica ion uresLTC2758 a Te Maxi Mu M r a T p in c F T (Notes 1, 2) TOP VIEW I , I to GND ............................................0.3V OUT1X OUT2X R , R , REFX, R , R , V , INX COMX FBX OFSX OSADJX GE to GND ....................................................... 18V ADJX V to GND ..................................................0.3V to 7V DD Digital Inputs to GND ...................................0.3V to 7V Digital Outputs to GND .....0.3V to V +0.3V (max 7V) REF A 1 36 REF B DD REF A 2 35 REF B Operating Temperature Range R 3 34 R COMA COMB LTC2758C ................................................ 0C to 70C GE 4 33 GE ADJA ADJB R 5 32 R INA INB LTC2758I .............................................40C to 85C R 6 31 R INA INB Maximum Junction Temperature .......................... 150C GND 7 30 GND I 8 29 I OUT2AS OUT2BS Storage Temperature Range ..................65C to 150C I 9 28 I OUT2AF OUT2BF Lead Temperature (Soldering, 10 sec) ...................300C GND 10 27 GND CS/LD 11 26 LDAC SDI 12 25 S2 LX PACKAGE 48-LEAD (7mm 7mm) PLASTIC LQFP T = 150C, = 53C/W JMAX JA Der in F Ma T