LTC1456IS8#PBF Analog Devices

LTC1456 12-Bit Rail-to-Rail Micropower DAC with Clear Input DESCRIPTION FEATURES n SO-8 Package The LTC 1456 is a complete single supply, rail-to-rail n 12-Bit Resolution voltage output, 12-bit digital-to-analog converter (DAC) in n Buffered True Rail-to-Rail Voltage Output an SO-8 package. It includes a rail-to-rail output buffer n Asynchronous Clear Input amplifier and an easy-to-use 3-wire cascadable serial n Built-In Reference interface. The LTC1456 includes a CLR pin that asynchro- n Schmitt Trigger On Clock Input Allows Direct nously clears the DAC to zero scale. Optocoupler Interface The LTC1456 has an internal 2.048V reference and a full- n Power-On Reset Clears DAC to 0V scale output of 4.095V. It operates on a 4.5V to 5.5V n 3-Wire Cascadable Serial Interface supply, dissipating 2.2mW. n Maximum DNL Error: 0.5LSB n The low power supply current and the space saving SO-8 Low Cost package make the LTC1456 ideal for battery-powered U applications. APPLICATIONS , LTC and LT are registered trademarks of Linear Technology Corporation. n Digital Calibration n Industrial Process Control n Automatic Test Equipment n Cellular Telephones TYPICAL APPLICATION Functional Block Diagram: 12-Bit Rail-to-Rail DAC with Clear Input Differential Nonlinearity vs Input Code 4.5V TO 5.5V 8 0.5 V 2.048V CC 2 D IN 1 CLK + V OUT RAIL-TO-RAIL 12-BIT 7 m P VOLTAGE 3 CS/LD SHIFT OUTPUT REG 12-BIT AND DAC 0 DAC LATCH 4 D OUT 6 CLR POWER-ON TO RESET OTHER 0.5 DACS 4095 0 512 1024 1536 2048 2560 3072 3584 GND 1456 TA01 CODE 5 1456 TA02 1 DNL ERROR (LSB) U ULTC1456 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER I FOR ATIO V to GND .............................................. 0.5V to 7.5V CC ORDER PART TOP VIEW Logic Inputs to GND ................................ 0.5V to 7.5V NUMBER CLK 1 V V .............................................. 0.5V to V + 0.5V 8 CC OUT CC LTC1456CN8 D 2 7 V Maximum Junction Temperature ......... 65 C to 125 C IN OUT LTC1456IN8 CS/LD CLR 3 6 Operating Temperature Range LTC1456CS8 D 4 5 GND OUT LTC1456C ............................................ 0 C to 70 C LTC1456IS8 LTC1456I ........................................ 40 C to 85 C N8 PACKAGE S8 PACKAGE S8 PART MARKING 8-LEAD PDIP 8-LEAD PLASTIC SO Storage Temperature Range ................ 65 C to 150 C T = 125 C, q = 100 C/W (N8) JMAX JA Lead Temperature (Soldering, 10 sec)................. 300 C 1456 T = 125 C, q = 150 C/W (S8) JMAX JA 1456I Consult factory for Military grade parts. ELECTRICAL CHARACTERISTICS V = 4.5V to 5.5V, V unloaded, T = T to T , unless otherwise noted. CC OUT A MIN MAX SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS DAC Resolution l 12 Bits DNL Differential Nonlinearity Guaranteed Monotonic (Note 1) l 0.5 LSB INL Integral Nonlinearity T = 25 C 3.5 LSB A (Note 1) l 4 LSB 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 T = 25 C 4.065 4.095 4.125 V FS A l 4.045 4.095 4.145 V V TC Full-Scale Voltage 24 ppm/ C FS Temperature Coefficient Power Supply V Positive Supply Voltage For Specified Performance l 4.5 5.5 V CC I Supply Current (Note 4) l 430 650 m A CC Op Amp DC Performance Short-Circuit Current Low V Shorted to GND l 120 mA OUT Short-Circuit Current High V Shorted to V l 120 mA OUT CC Output Impedance to GND Input Code = 0 l 40 120 W AC Performance Voltage Output Slew Rate (Note 2) l 0.4 1.0 V/m s Voltage Output Settling Time (Notes 2, 3) to 0.5LSB 14 m s Digital Feedthrough 0.3 nV s 2 U WU U WWW