LTC2756 Serial 18-Bit SoftSpan I DAC OUT Fea T Descrip T n Maximum 18-Bit INL Error: 1 LSB Over Temperature The LTC 2756 is an 18-bit multiplying serial-input, n Program or Pin-Strap Six Output Ranges: current-output digital-to-analog converter. LTC2756A 0V to 5V, 0V to 10V, 2.5V to 7.5V, 2.5V, 5V, 10V provides full 18-bit performanceINL and DNL of 1LSB n Guaranteed Monotonic Over Temperature maximumover 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 Reference Current Constant for All Codes 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 settings) n Clear and Power-On-Reset to 0V Regardless of Output can be read for verification in just one instruction cycle and Range if you change register content, the altered register will be n 28-Pin SSOP Package automatically read back during the next instruction cycle. Voltage-controlled offset and gain adjustments are also a T provided and the power-on reset circuit and CLR pin both n reset the DAC output to 0V regardless of output range. Instrumentation n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Medical Devices Technology Corporation and SoftSpan is a trademark of Linear Technology Corporation. n Automatic Test Equipment All other trademarks are the property of their respective owners. n Process Control and Industrial Automation Typical a T 18-Bit Voltage Output DAC with Software-Selectable Ranges LTC2756 Integral Nonlinearity 1.0 REF 0V TO 10V RANGE 5V 0.8 + 0.6 LT1012 0.4 150pF 0.2 0 0.2 R R REF R R IN COM FB OFS 0.4 27pF 4 0.6 SPI WITH READBACK I OUT1 0.8 LTC2756 1.0 5V V 18-BIT DAC WITH SPAN SELECT LT1468 OUT 0 65536 131072 196608 262143 I OUT2 + V CODE DD 2756 TA01b 0.1F GND GND GE V OSADJ ADJ 2756 TA01a GAIN OFFSET ADJUST ADJUST 2756fa 1 For more information www.linear.com/LTC2756 INL (LSB) ion pplica ions pplica ion uresLTC2756 a Te Maxi Mu M r a T p in c F T (Notes 1, 2) TOP VIEW I , I to GND................................................0.3V OUT1 OUT2 R 1 28 R FB OFS R , R , REF, R , R , V , IN COM FB OFS OSADJ REF 2 27 R FB GE to GND ......................................................... 18V ADJ R 3 26 I OUT1 COM V to GND ..................................................0.3V to 7V DD GE 4 25 V OSADJ ADJ Digital Inputs to GND ...................................0.3V to 7V R 5 24 GND IN Digital Outputs to GND .... 0.3V to V +0.3V (Max 7V) DD GND 6 23 LDAC Operating Temperature Range I 7 22 S2 OUT2 LTC2756C ................................................ 0C to 70C GND 8 21 S1 LTC2756I .............................................40C to 85C CS/LD 9 20 S0 Maximum Junction Temperature .......................... 150C SDI 10 19 M-SPAN SCK 11 18 RFLAG Storage Temperature Range ..................65C to 150C SRO 12 17 CLR Lead Temperature (Soldering, 10 sec) ...................300C GND 13 16 GND V 14 15 GND DD G PACKAGE 28-LEAD PLASTIC SSOP T = 150C, = 95C/W JMAX JA o r Der i n F Ma T