LTC2751 Current Output 12-/14-/16-Bit SoftSpan DACs with Parallel I/O Fea T Descrip T n Six Programmable Output Ranges The LTC 2751 is a family of 12-, 14-, and 16-bit multi- Unipolar: 0V to 5V, 0V to 10V plying parallel-input, current-output DACs. They operate Bipolar: 5V, 10V, 2.5V, 2.5V to 7.5V from a single 2.7V to 5.5V supply. All parts are guaranteed n Maximum 16-Bit INL Error: 1 LSB over Temperature monotonic over temperature. The LTC2751A-16 provides n Low 1A (Maximum) Supply Current 16-bit performance (1LSB INL and DNL) over temperature n Guaranteed Monotonic over Temperature without any adjustments. These SoftSpan DACs offer six n Low Glitch Impulse 1nV s output rangestwo unipolar and four bipolarthat can be n 2.7V to 5.5V Single Supply Operation programmed through the parallel interface, or pinstrapped n 2s Settling Time to 1 LSB for operation in a single range. n Reference Input: 15V These parts use a bidirectional input/output parallel in- n Parallel Interface with Readback of All Registers terface that allows readback of any on-chip register. A n Asynchronous CLR Pin Clears DAC Output to 0V in power-on circuit resets the DAC output to 0V when power is Any Output Range initially applied. A logic low on the CLR pin asynchronously n Power-On Reset to 0V clears the DAC to 0V in any output range. n 38-Pin 5mm 7mm QFN Package The parts are specified over commercial and industrial temperature ranges. a T L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and n High Resolution Offset and Gain Adjustment SoftSpan is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Process Control and Industrial Automation n Automatic Test Equipment n Data Acquisition Systems Typical a T 16-Bit DAC with Software Selectable Ranges LTC2751-16 Integral Nonlinearity REF 1.0 5V V = 5V DD + 0.8 V = 5V REF 10V RANGE 1/2 LT 1469 0.6 C2 0.4 150pF 0.2 0.0 R R REF R R IN COM FB OFS C1 R1 R2 0.2 15pF LTC2751-16 0.4 I OUT1 0.6 25C WR WR 90C 16-BIT DAC WITH SPAN SELECT V 0.8 1/2 LT1469 UPD UPD OUT 45C I OUT2 + READ READ 1.0 0 16384 32768 65535 49152 D/S D/S GND CODE CLR CLR 3 16 2751 TA01b 5V V DD MSPAN R VOS C3 0.1F 2751 TA01 SPAN I/O DATA I/O S2-S0 D15-D0 2751fa 1 INL (LSB) ion pplica ions pplica ion uresLTC2751 a T e Maxi Mu M r a T (Notes 1, 2) Operating Temperature Range I , I , R to GND .....................................0.3V OUT1 OUT2 COM LTC2751C ..................................................... 0C to 70C R , R , R , REF, R to GND ........................... 15V FB OFS IN VOS LTC2751I ..................................................40C to 85C V to GND .................................................. 0.3V to 7V DD Maximum Junction Temperature .......................... 125C S2, S1, S0, D15-D0, MSPAN, READ, D/S,WR, Storage Temperature Range .................. 65C to 150C UPD, CLR to GND ........ 0.3V to V + 0.3V (7V Max) DD p c F T TOP VIEW TOP VIEW TOP VIEW 38 37 36 35 34 33 32 38 37 36 35 34 33 32 38 37 36 35 34 33 32 R 1 31 WR COM R 1 31 WR R 1 31 WR COM COM R 2 30 UPD IN R R 2 30 UPD 2 30 UPD IN IN S2 3 29 READ S2 3 29 READ S2 3 29 READ I D/S 4 28 OUT2 I 4 28 D/S I 4 28 D/S OUT2 OUT2 NC 5 27 NC NC 5 27 NC NC 5 27 NC D15 6 26 NC D11 6 26 NC D13 6 26 NC 39 39 39 D14 7 25 D0 D10 7 25 NC D12 7 25 NC D13 8 24 D1 D9 8 24 NC D11 8 24 NC D12 9 23 D2 D8 9 23 NC D10 9 23 D0 D11 10 22 D3 D7 10 22 NC D9 10 22 D1 D10 11 21 D4 D6 11 21 D0 D8 11 21 D2 20 D9 12 D5 D5 12 20 D1 D7 12 20 D3 13 14 15 16 17 18 19 13 14 15 16 17 18 19 13 14 15 16 17 18 19 LTC2751-16 UHF PACKAGE LTC2751-12 UHF PACKAGE LTC2751-14 UHF PACKAGE 38-LEAD (5mm 7mm) PLASTIC QFN 38-LEAD (5mm 7mm) PLASTIC QFN 38-LEAD (5mm 7mm) PLASTIC QFN T = 125C, = 34C/W T = 125C, = 34C/W JMAX JA JMAX JA T = 125C, = 34C/W JMAX JA EXPOSED PAD (PIN 39) IS GND, MUST BE SOLDERED TO PCB EXPOSED PAD (PIN 39) IS GND, MUST BE SOLDERED TO PCB EXPOSED PAD (PIN 39) IS GND, MUST BE SOLDERED TO PCB o r D i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2751CUHF-12 PBF LTC2751CUHF-12 TRPBF 275112 0C to 70C 38-Lead (5mm 7mm) Plastic QFN LTC2751IUHF-12 PBF LTC2751IUHF-12 TRPBF 275112 38-Lead (5mm 7mm) Plastic QFN 40C to 85C LTC2751CUHF-14 PBF LTC2751CUHF-14 TRPBF 275114 38-Lead (5mm 7mm) Plastic QFN 0C to 70C LTC2751IUHF-14 PBF LTC2751IUHF-14 TRPBF 275114 38-Lead (5mm 7mm) Plastic QFN 40C to 85C LTC2751BCUHF-16 PBF LTC2751BCUHF-16 TRPBF 275116 0C to 70C 38-Lead (5mm 7mm) Plastic QFN LTC2751BIUHF-16 PBF LTC2751BIUHF-16 TRPBF 275116 40C to 85C 38-Lead (5mm 7mm) Plastic QFN LTC2751ACUHF-16 PBF LTC2751ACUHF-16 TRPBF 275116 38-Lead (5mm 7mm) Plastic QFN 0C to 70C LTC2751AIUHF-16 PBF LTC2751AIUHF-16 TRPBF 275116 38-Lead (5mm 7mm) Plastic QFN 40C to 85C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: