LTC1669 10-Bit Rail-to-Rail Micropower DAC with 2 I C Interface FEATURES DESCRIPTION n Micropower 10-Bit DAC in SOT-23 The LTC 1669 is a 10-bit voltage output DAC with true n Low Operating Current: 60A buffered rail-to-rail output voltage capability. It operates n Ultralow Power Shutdown Mode: 12A from a single supply with a range of 2.7V to 5.5V. The n 2-Wire Serial Interface Compatible reference for the DAC is selectable between the supply 2 voltage or an internal bandgap reference. Selecting the with I C n internal bandgap reference will set the full-scale output Selectable Internal Reference or Ratiometric to voltage range to 2.5V. Selecting the supply as the reference V CC n sets the output voltage range to the supply voltage. Maximum DNL Error: 0.75LSB n 8 User Selectable Addresses (MSOP Package) The part features a simple 2-wire serial interface compat- n 2 Single 2.7V to 5.5V Operation ible with I C that allows communication between many n Buffered True Rail-to-Rail Voltage Output devices. The internal data registers are double buffered to n Power-On Reset allow for simultaneous update of several devices at once. n 1.5V V and 2.1V V for SDA and SCL IL IH The DAC can be put in low current power-down mode for n Small 5-Lead TSOT-23 and 8-Lead MSOP Packages use in power conscious systems. Power-on reset ensures the DAC output is at 0V when APPLICATIONS power is initially applied, and all internal registers are n Digital Calibration cleared. The LTC1669 is pin-for-pin compatible with the n Offset/Gain Adjustment LTC1663. n Industrial Process Control For SMBus-compatible designs, please refer to the n Automatic Test Equipment LTC1663. n Arbitrary Function Generators L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. n Battery-Powered Data Conversion Products All other trademarks are the property of their respective owners. BLOCK DIAGRAM 4 (5) V Differential Nonlinearity (DNL) CC BANDGAP 1.0 1.25V REFERENCE V = V = 5V REF CC 0.8 T = 25C A 0.6 REFERENCE SELECT 0.4 0.2 0 10-BIT 0.2 DAC LATCH 0.4 V 3 (8) OUT 10-BIT BUFFERED V DAC 0.6 OUT 0.8 COMMAND INPUT MSOP LATCH LATCH 1.0 PACKAGE 0 28 156 384 512 640 768 896 1024 ONLY CODE (6) AD0 1669 G02 (2) AD1 2-WIRE INTERFACE (3) AD2 SDA SCL GND 1669 BD 1 (1) 5 (4) 2 (7) NOTE: PIN NUMBERS IN PARENTHESES REFER TO THE MSOP PACKAGE 1669fa 1 ERROR (LSB)LTC1669 (Note 1) ABSOLUTE MAXIMUM RATINGS V to GND .............................................. 0.3V to 7.5V Operating Temperature Range CC SDA, SCL ................................................. 0.3V to 7.5V LTC1669C ............................................... 0C to 70C AD0, AD1, AD2 (MSOP Only) ........0.3V to (V + 0.3V) LTC1669I............................................. 40C to 85C CC V .............................................0.3V to (V + 0.3V) Storage Temperature Range .................. 65C to 150C OUT CC Lead Temperature (Soldering, 10 sec) ................. 300C PIN CONFIGURATION TOP VIEW TOP VIEW SDA 1 8 V OUT SDA 1 5 SCL AD1 2 7 GND GND 2 AD2 3 6 AD0 SCL 4 5 V V 3 4 V CC OUT CC MS8 PACKAGE S5 PACKAGE 8-LEAD PLASTIC MSOP 5-LEAD PLASTIC SOT-23 T = 125C, = 150C/W JMAX JA T = 125C, = 250C/W JMAX JA ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC1669CMS8 PBF LTC1669CMS8 TRPBF LTAHV 8-Lead Plastic MSOP 0C to 70C LTC1669IMS8 PBF LTC1669IMS8 TRPBF LTAHX 8-Lead Plastic MSOP 40C to 85C LTC1669-8CMS8 PBF LTC1669-8CMS8 TRPBF LTAHT 8-Lead Plastic MSOP 0C to 70C LTC1669-8IMS8 PBF LTC1669-8IMS8 TRPBF LTAHU 8-Lead Plastic MSOP 40C to 85C TAPE AND REEL (MINI) TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC1669CS5 TRMPBF LTC1669CS5 TRPBF LTAHW 5-Lead Plastic TSOT-23 0C to 70C LTC1669-1CS5 TRMPBF LTC1669-1CS5 TRPBF LTAHR 5-Lead Plastic TSOT-23 0C to 70C TRM = 500 pieces. Consult LTC Marketing for parts speci ed with wider operating temperature ranges. Consult LTC Marketing for information on lead based nish parts. For more information on lead free part marking, go to: