LTC7543/LTC8143 Improved Industry Standard Serial 12-Bit Multiplying DACs FEATURES DESCRIPTION n Improved Direct Replacement for AD7543 The LTC 7543/LTC8143 are serial-input 12-bit multiply- and DAC-8143 ing digital-to-analog converters (DACs). They are superior n Low Cost pin compatible replacements for the AD7543 and n DNL and INL Over Temperature: 0.5LSB DAC-8143. Improvements include better accuracy, better n Easy, Fast and Flexible Serial Interface stability over temperature and supply variations, lower n Daisy-Chain 3-Wire Interface for Multiple DAC sensitivity to output amplifier offset, tighter timing speci- Systems (LTC8143) fications and lower output capacitance. n 1LSB Maximum Gain Error Over Temperature An easy-to-use serial interface includes an asynchronous Eliminates Adjustment CLEAR input for systems requiring initialization to a known n Asynchronous Clear Input for Initialization state. The LTC8143 has a serial data output to allow daisy- n Four-Quadrant Multiplication chaining multiple DACs on a 3-wire interface bus. n Low Power Consumption n These DACs are extremely versatile. They can be used for 16-Pin PDIP and SO Packages 2-quadrant and 4-quadrant multiplying, programmable U gain and single supply applications, such as noninverting APPLICATIONS voltage output and biased or offset ground mode. n Process Control and Industrial Automation Parts are available in 16-pin PDIP and SO packages and n Remote Microprocessor-Controlled Systems are specified over the extended industrial temperature n Digitally Controlled Filters and Power Supplies range, 40C to 85C. n Programmable Gain Amplifiers n Automatic Test Equipment , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATION Multiplying DAC Has Easy 3-Wire Serial Interface Integral Nonlinearity Over Temperature V 1.0 IN 5V 14 15 16 33pF 0.5 V V R DD REF FB 1 4 T = 85C OUT 1 T = 25C STB1 A CLOCK A 7 LTC7543 DATA SRI LT 1097 V OUT LTC8143 5 + 0 LOAD LD1 OUT 2 2 T = 40C DGND AGND A 12 3 0.5 7543/8143 TA01 1.0 0 512 1024 1536 2048 2560 3072 3584 4095 DIGITAL INPUT CODE 7543/8143 TA02 1 INTEGRAL NONLINEARITY (LSB) U ULTC7543/LTC8143 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION V to AGND .............................................. 0.5V to 7V DD TOP VIEW ORDER PART V to DGND .............................................. 0.5V to 7V DD NUMBER 1 16 R OUT 1 FB AGND to DGND ............................................ V + 0.5V DD 2 15 V OUT 2 REF DGND to AGND ............................................ V + 0.5V DD 3 14 V LTC7543GKN AGND DD Digital Inputs to DGND ............... 0.5V to (V + 0.5V) DD 4 CLR LTC7543KN STB1 13 V , V to AGND ................. 0.5V to (V + 0.5V) OUT1 OUT2 DD 5 DGND LTC7543GKSW LD1 12 V to AGND, DGND............................................ 25V NC (LTC7543) REF 6 STB4 LTC7543KSW 11 SRO (LTC8143) V to AGND, DGND ........................................... 25V RFB 7 STB3 LTC8143EN SRI 10 Maximum Junction Temperature .......................... 150C 8 LD2 LTC8143FN STB2 9 Operating Temperature Range ............... 40C to 85C LTC8143ESW N PACKAGE 16-LEAD PDIP LTC8143FSW Storage Temperature Range ................ 65C to 150C SW PACKAGE Lead Temperature (Soldering, 10 sec).................. 300C 16-LEAD PLASTIC SO WIDE T = 150C, = 100C/ W (N) JMAX JA T = 150C, = 130C/ W (SW) JMAX JA Consult factory for Military grade parts. ACCURACY CHARACTERISTICS LTC7543 V = 5V, V = 10V, V = V = AGND = DGND =0V, T = T to T , unless otherwise specified. DD REF OUT1 OUT2 A MIN MAX LTC7543GK LTC7543K SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Resolution l 12 12 Bits INL Integral Nonlinearity (Note 1) l 0.5 0.5 LSB (Relative Accuracy) DNL Differential Nonlinearity Guaranteed Monotonic, T to T l 0.5 0.5 LSB MIN MAX GE Gain Error (Note 2) T = 25C 1 2 LSB A T to T l 1 2 LSB MIN MAX Gain Temperature Coefficient (Note 3) l 15 15 ppm/C (Gain/Temp) I Output Leakage Current (Note 4) T = 25C 1 1nA LKG A T to T l 10 10 nA MIN MAX Zero-Scale Error T = 25C 0.006 0.006 LSB A T to T l 0.06 0.06 LSB MIN MAX PSRR Power Supply Rejection Ratio V = 5V 5% l 0.0001 0.002 0.0001 0.002 %/% DD 2 U W U U WWW