LTC1451 LTC1452/LTC1453 12-Bit Rail-to-Rail Micropower DACs in SO-8 FEATURES DESCRIPTIO n 12-Bit Resolution The LTC 1451/LTC1452/LTC1453 are complete single n Buffered True Rail-to-Rail Voltage Output supply, rail-to-rail voltage output 12-bit digital-to-analog n 3V Operation (LTC1453), I : 250m A Typ converters (DACs) in an SO-8 package. They include an CC n 5V Operation (LTC1451), I : 400m A Typ output buffer amplifier and an easy-to-use 3-wire CC n 3V to 5V Operation (LTC1452), I : 225m A Typ cascadable serial interface. CC n Built-In Reference: 2.048V (LTC1451) The LTC1451 has an onboard reference of 2.048V and a 1.220V (LTC1453) full-scale output of 4.095V. It operates from a single 4.5V n Multiplying Version (LTC1452) to 5.5V supply. n Power-On Reset n The LTC1452 is a multiplying DAC with a full-scale output SO-8 Package n of twice the reference input voltage. It operates from a 3-Wire Cascadable Serial Interface n single supply of 2.7V to 5.5V. Maximum DNL Error: 0.5LSB n Schmitt Trigger on Clock Input Allows Direct The LTC1453 has an onboard 1.22V reference and a full- Optocoupler Interface scale output of 2.5V. It operates from a single supply of 2.7V to 5.5V. U APPLICATIO S The low power supply current makes the LTC1451 family n ideal for battery-powered applications. The space saving Digital Calibration n 8-pin SO package and operation with no external compo- Industrial Process Control n nents provide the smallest 12-bit DAC system available. Automatic Test Equipment n Cellular Telephones , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIO Differential Nonlinearity Daisy-Chained Control Outputs vs Input Code 5V 0.5 0.1m F V D IN CC CLK m P CONTROL V LTC1451 OUT OUTPUT 1 CS/LD D V GND OUT REF 0.0 0.1m F D V IN CC CLK CONTROL V LTC1451 OUT 0.5 OUTPUT 2 CS/LD 0 512 1024 1536 2048 2560 3072 3584 4095 CODE D V GND OUT REF 1451/2/3 TA02 1451/2/3 TA01 TO NEXT DAC sn145123 145123fas 1 DNL ERROR (LSB) U ULTC1451 LTC1452/LTC1453 ABSOLUTE AXI U RATI GS (Note 1) Operating Temperature Range V to GND .............................................. 0.5V to 7.5V CC Commercial ........................................... 0 C to 70 C TTL Input Voltage .................................... 0.5V to 7.5V Industrial ......................................... 40 C to 85 C V , D .................................... 0.5V to V + 0.5V OUT OUT CC Storage Temperature Range ................ 65 C to 150 C REF ................................................ 0.5V to V + 0.5V CC Lead Temperature (Soldering, 10 sec)................. 300 C Maximum Junction Temperature ......... 65 C to 125 C UUW PACKAGE/ORDER I FOR ATIO TOP VIEW ORDER PART NUMBER S8 PART MARKING CLK V 1 8 CC D 2 7 V LTC1451CN8 LTC1451CS8 1451 IN OUT CS/LD 3 6 REF LTC1452CN8 LTC1452CS8 1452 D 4 GND LTC1453CN8 LTC1453CS8 1453 5 OUT LTC1451IN8 LTC1451IS8 1451I N8 PACKAGE S8 PACKAGE 8-LEAD PDIP 8-LEAD PLASTIC SO LTC1452IN8 LTC1452IS8 1452I LTC1453IN8 LTC1453IS8 1453I T = 125 C, q = 100 C/W (N8) JMAX JA T = 125 C, q = 150 C/W (S8) JMAX JA Consult factory for Military grade parts. ELECTRICAL CHARACTERISTICS The l denotes specifications which apply over the full operating temperature range, otherwise specifications are at T = 25 C. V = 4.5V to 5.5V (LTC1451), 2.7V to 5.5V (LTC1452/LTC1453), A CC internal or external reference (V V /2), V and REF unloaded, unless otherwise noted. REF CC OUT SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS DAC Resolution l 12 Bits DNL Differential Nonlinearity Guaranteed Monotonic (Note 2) l 0.5 LSB INL Integral Nonlinearity T = 25 C 3.5 LSB A (Note 2) l 4LSB V Offset Error T = 25 C 12 mV OS A l 18 mV V TC Offset Error Temperature 15 m V/ C OS Coefficient V Full-Scale Voltage When Using Internal Reference, LTC1451, T = 25 C 4.065 4.095 4.125 V FS A LTC1451 l 4.045 4.095 4.145 V External 2.048V Reference, V = 5V, LTC1452 l 4.075 4.095 4.115 V CC When Using Internal Reference, LTC1453, T = 25 C 2.470 2.500 2.530 V A LTC1453 l 2.460 2.500 2.540 V V TC Full-Scale Voltage When Using Internal Reference, LTC1451 0.10 LSB/ C FS Temperature Coefficient When Using External 2.048V Reference, LTC1452 0.02 LSB/ C When Using Internal Reference, LTC1453 0.10 LSB/ C sn145123 145123fas 2 U WWW