LTC7545A Improved Industry Standard Parallel 12-Bit Multiplying DAC DESCRIPTIO EA U F T RES The LTC 7545A is a 12-bit multiplying digital-to-analog n Improved Direct Replacement for AD7545A converter (DAC) with a microprocessor compatible paral- and AD7545 lel input. It is a superior pin compatible replacement for the n DNL and INL Over Temperature: 0.5LSB industry standard AD7545A and AD7545. Improvements n Gain Error: 1LSB Maximum include better accuracy, better stability over temperature n 4-Quadrant Multiplication and supply variations and lower sensitivity to output n Single 5V or 15V Supply amplifier offset. n Low Power Consumption n Low Cost This very versatile DAC is useful for 2-quadrant and 4-quadrant multiplying, programmable gain and filtering and single supply noninverting voltage output operation. APPLICATI S Parts are available in 20-pin PDIP and SO packages and n Process Control and Industrial Automation commercial and industrial temperature grades. n Software Controlled Gain Adjustment , LTC and LT are registered trademarks of Linear Technology Corporation. n Digitally Controlled Filter and Power Supplies n Automatic Test Equipment TYPICAL APPLICATI 2-Quadrant Multiplying DAC Has Less Than 0.5LSB (Typ) Total Unadjusted Error Integral Nonlinearity Over Temperature V 1.0 IN 5V 0.1F 18 19 0.5 20 33pF V V R T = 85C DD REF FB A T = 25C A 1 OUT1 0 LTC7545A LT 1097 V OUT 17 WR + AGND 16 T = 40C A 2 CS DGND 415 3 0.5 7545A TA01 1.0 2048 0 512 1024 1536 2560 3072 3584 4095 DIGITAL INPUT CODE 7545A TA02 1 INTEGRAL NONLINEARITY (LSB) UO UO ULTC7545A O PACKAGE/ORDER I FOR ATIO ABS LUTEXAI U RATI GS V to AGND ............................................ 0.5V to 17V DD TOP VIEW ORDER PART V to DGND .............................................0.5V to 17V DD OUT1 1 20 R NUMBER FB AGND to DGND .............................. 0.5V to V + 0.5V DD AGND 2 19 V REF LTC7545ABG DGND to AGND .............................. 0.5V to V + 0.5V DD DGND 3 18 V DD LTC7545ABN V to AGND,DGND ............................................. 25V DB11 (MSB) 4 17 WR REF LTC7545ABSW R to AGND,DGND ............................................ 25V DB10 5 16 CS FB LTC7545ACG DB9 6 15 DB0 (LSB) Digital Inputs to DGND ................. 0.5V to V + 0.5V DD LTC7545ACN DB8 7 14 DB1 V to AGND, DGND ................. 0.5V to V + 0.5V OUT1 DD LTC7545ACSW DB7 8 13 DB2 Maximum Junction Temperature .......................... 150 C LTC7545AKG 12 DB6 9 DB3 Operating Temperature Range LTC7545AKN DB5 10 11 DB4 Commercial (K, L Versions) .................... 0 C to 70 C LTC7545AKSW Industrial (B, C Versions)................... 40 C to 85 C G PACKAGE N PACKAGE LTC7545ALG 20-LEAD PLASTIC SSOP 20-LEAD PDIP Storage Temperature Range ................ 65 C to 150 C LTC7545ALN SW PACKAGE Lead Temperature (Soldering, 10 sec)................. 300 C 20-LEAD PLASTIC SO WIDE LTC7545ALSW T = XXX C, q = XXX C/W (G) JMAX JA T = 150 C, q = 100 C/W (N) JMAX JA T = 150 C, q = 130 C/W (SW) JMAX JA Consult factory for Military grade parts. ELECTRICAL CHARACTERISTICS V = 5V or 15V, V = 10V, V = AGND = 0V, T = T to T unless otherwise noted. DD REF OUT1 A MIN MAX, LTC7545AK/AB LTC7545AL/AC SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Accuracy Resolution l 12 12 Bits INL Integral Nonlinearity (Note 1) T = 25 C 0.5 0.5 LSB A (Relative Accuracy) T to T l 0.5 0.5 LSB MIN MAX DNL Differential Nonlinearity Guaranteed Monotonic T = 25 C 1 0.5 LSB A T to T T to T l 1 0.5 LSB MIN MAX MIN MAX GE Gain Error (Note 2) T = 25 C 2 1LSB A T to T l 3 2LSB MIN MAX Gain Temperature Coefficient (Note 3) D Gain/D Temperature l 1 5 1 5 ppm/ C I OUT1 Leakage Current (Note 4) T = 25 C 10 10 nA LKG A T to T l 50 50 nA MIN MAX PSRR Power Supply Rejection l 0.002 0.002 %/% Reference Input R V Input Resistance (Note 5) l 8 11 15 8 11 15 kW REF REF AC Performance Output Current Settling Time (Notes 3, 6, 7) l 11 m s Propagation Delay (Notes 3, 6, 8) l 150 150 ns Digital-to-Analog Glitch Impulse (Notes 6, 9) l 5 5 nV-sec Multiplying Feedthrough Error V = 10V, 10kHz Sine Wave l 55 mV REF P-P Analog Outputs C Output Capacitance (Note 3) DB0 to DB11 = 0V, C l 30 70 30 70 pF OUT OUT1 WR, CS = 0V DB0 to DB11 = V C l 60 150 60 150 pF DD, OUT1 WR, CS = 0V 2 U W W W U WU