LTC2755 - Quad Current Output 12-/14-/16-Bit SoftSpan DACs with Parallel I/O


  • Program or Pin-Strap Six Output Ranges
       Unipolar: 0V to 5V, 0V to 10V
       Bipolar: ±5V, ±10V, ±2.5V, –2.5V to 7.5V
  • Maximum 16-Bit INL Error: ±1 LSB over Temperature
  • Low 1μA (Maximum) Supply Current
  • Guaranteed Monotonic over Temperature
  • Low Glitch Impulse 1nV•s
  • 2.7V to 5.5V Single Supply Operation
  • 2μs Settling Time to ±1 LSB
  • Parallel Interface with Readback of All Registers
  • Asynchronous CLR Pin Clears DAC Outputs to 0V in
  • Any Output Range
  • Power-On Reset to 0V
  • 64-Pin 9mm x 9mm QFN Package

Typical Application

LTC2755 Typical Application
LTC2755 Typical Application


The LTC2755 is a family of quad 12-, 14-, and 16-bit multiplying parallel-input, current-output DACs. These DACs operate from a single 2.7V to 5.5V supply and are all guaranteed monotonic over temperature. The LTC2755A-16 provides 16-bit performance (±1LSB INL and DNL) over temperature without any adjustments. These SoftSpan DACs offer six output ranges—two unipolar and four bipolar—that can be programmed through the parallel interface, or pinstrapped for operation in a single range.

The LTC2755 DACs use a bidirectional input/output parallel interface that allows readback of any internal register, including the DAC output span settings. A power-on reset circuit resets the DAC outputs to 0V when power is initially applied. A logic low on the CLR pin asynchronously clears the DACs to 0V in any output range. The parts are specified over commercial and industrial temperature ranges.


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
LTC2755ACUP-16#PBF 9x9 QFN-64 UP C 05-08-1705 Yes
LTC2755ACUP-16#TRPBF 9x9 QFN-64 UP C 05-08-1705 Yes
LTC2755AIUP-16#PBF 9x9 QFN-64 UP I 05-08-1705 Yes
LTC2755AIUP-16#TRPBF 9x9 QFN-64 UP I 05-08-1705 Yes
LTC2755BCUP-16#PBF 9x9 QFN-64 UP C 05-08-1705 Yes
LTC2755BCUP-16#TRPBF 9x9 QFN-64 UP C 05-08-1705 Yes
LTC2755BIUP-16#PBF 9x9 QFN-64 UP I 05-08-1705 Yes
LTC2755BIUP-16#TRPBF 9x9 QFN-64 UP I 05-08-1705 Yes
LTC2755CUP-12#PBF 9x9 QFN-64 UP C 05-08-1705 Yes
LTC2755CUP-12#TRPBF 9x9 QFN-64 UP C 05-08-1705 Yes
LTC2755CUP-14#PBF 9x9 QFN-64 UP C 05-08-1705 Yes
LTC2755CUP-14#TRPBF 9x9 QFN-64 UP C 05-08-1705 Yes
LTC2755IUP-12#PBF 9x9 QFN-64 UP I 05-08-1705 Yes
LTC2755IUP-12#TRPBF 9x9 QFN-64 UP I 05-08-1705 Yes
LTC2755IUP-14#PBF 9x9 QFN-64 UP I 05-08-1705 Yes
LTC2755IUP-14#TRPBF 9x9 QFN-64 UP I 05-08-1705 Yes

LTC2755 Package Drawing
LTC2755 Package Drawing
LTC2755 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LTC2755ACUP-16#PBF 9x9 QFN-64 C $29.90 $19.70 Yes
LTC2755ACUP-16#TRPBF 9x9 QFN-64 C $19.76 Yes
LTC2755AIUP-16#PBF 9x9 QFN-64 I $35.88 $23.64 Yes
LTC2755AIUP-16#TRPBF 9x9 QFN-64 I $23.70 Yes
LTC2755BCUP-16#PBF 9x9 QFN-64 C $27.09 $17.85 Yes
LTC2755BCUP-16#TRPBF 9x9 QFN-64 C $17.91 Yes
LTC2755BIUP-16#PBF 9x9 QFN-64 I $32.51 $21.42 Yes
LTC2755BIUP-16#TRPBF 9x9 QFN-64 I $21.48 Yes
LTC2755CUP-12#PBF 9x9 QFN-64 C $13.07 $9.15 Yes
LTC2755CUP-12#TRPBF 9x9 QFN-64 C $9.21 Yes
LTC2755CUP-14#PBF 9x9 QFN-64 C $19.20 $12.65 Yes
LTC2755CUP-14#TRPBF 9x9 QFN-64 C $12.71 Yes
LTC2755IUP-12#PBF 9x9 QFN-64 I $15.69 $10.98 Yes
LTC2755IUP-12#TRPBF 9x9 QFN-64 I $11.04 Yes
LTC2755IUP-14#PBF 9x9 QFN-64 I $23.04 $15.18 Yes
LTC2755IUP-14#TRPBF 9x9 QFN-64 I $15.24 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1112A LTC2755: 16-bit, Quad, SoftSpan, 1LSB INL Iout DAC, req. DC590 $100.00
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Companion Boards

Part Number Description Price Documentation
DC590B Isolated USB Serial Controller for Linear Technology QuikEval-Compatible Demo Boards $50.00
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Click here to view our complete list of demo boards


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