LTC1590 Dual Serial 12-Bit Multiplying DAC FEATURES DESCRIPTION n DNL and INL Over Temperature: 0.5LSB Max The LTC 1590 is a dual, serial input 12-bit multiplying n Gain Error: 1LSB Max digital-to-analog converter (DAC). It includes two current n Low Supply Current: 10A Max output multiplying CMOS DACs and an easy SPI compat- n 4-Quadrant Multiplication ible serial interface with daisy-chain output. An asynchro- n Power-On Reset nous CLR pin sets both DACs to zero scale. n Asynchronous Clear Input Excellent accuracy, stability and versatility are combined n Daisy-Chain 3-Wire Serial Interface with the smallest package available for a dual 12-bit n 16-Pin Narrow SO and PDIP Packages multiplying DAC. U Parts are available in 16-pin PDIP and narrow SO pack- APPLICATIONS ages and are specified over the commercial and industrial n Process Control and Industrial Automation temperature ranges. n Software Controlled Gain Adjustment n Digitally Controlled Filter and Power Supplies n , LTC and LT are registered trademarks of Linear Technology Corporation. Automatic Test Equipment Integral Nonlinearity Over TYPICAL APPLICATION Temperature DAC A 1.0 THREE SUPERIMPOSED CURVES Dual 12-Bit 2-Quadrant Multiplying DAC 0.5 T = 40C, A 25C, 85C V V IN A IN B 10V 5V 10V 0 16 9 1 2 15V V CC Daisy-Chained Control Outputs 33pF 0.5 13 D IN LT 1112 V R REF B FB B OUT1 B 3 14 CLK 1.0 DAC B V OUT B 0 512 1024 1536 2048 2560 3072 3584 4095 P OUT2 B 10V 4 DIGITAL INPUT CODE LTC1590 TA02 + 24-BIT SHIFT 11 CS/LD Integral Nonlinearity Over REG 8 AND Temperature DAC B LATCH 33pF V R 1.0 REF A FB A OUT1 A 6 THREE V DAC A OUT A SUPERIMPOSED OUT2 A 5 10V CURVES 0.5 + T = 40C, A 12 D OUT 25C, 85C LTC1590 CLR DGND AGND 0 15 10 7 LTC1590 TA01 15V 5V 0.5 1.0 0 512 1024 1536 2048 2560 3072 3584 4095 DIGITAL INPUT CODE LTC1590 TA03 1 INL (LSB) INL (LSB) U ULTC1590 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER I FOR ATIO V to AGND ............................................... 0.5V to 7V CC TOP VIEW ORDER PART V to DGND .............................................. 0.5V to 7V CC 16 V 1 V NUMBER REF B CC AGND to DGND ............................................. V + 0.5V CC 15 R 2 CLR FB B DGND to AGND ..............................................V + 0.5V 14 CC OUT1 B 3 CLK LTC1590CN V to AGND ........................................................25V 13 OUT2 B 4 D LTC1590CS REF IN R to AGND .......................................................... 25V 12 OUT2 A 5 D LTC1590IN OUT FB 11 Digital Inputs to DGND ................... 0.5V to V + 0.5V OUT1 A 6 CS/LD LTC1590IS CC 10 AGND 7 DGND V , V to AGND .................... 0.5V to V + 0.5V OUT1 OUT2 CC 9 R 8 V FB A REF A Maximum Junction Temperature .......................... 150C Operating Temperature Range N PACKAGE S PACKAGE 16-LEAD PDIP 16-LEAD PLASTIC SO LTC1590C................................................ 0C to 70C T = 150C, = 100C/W (N) JMAX JA LTC1590I............................................ 40C to 85C T = 150C, = 150C/W (S) JMAX JA Storage Temperature Range ................ 65C to 150C Consult factory for Military grade parts. Lead Temperature (Soldering, 10 sec)................. 300C ELECTRICAL CHARACTERISTICS V = 4.5V to 5.5V, V = 10V, V = V = AGND = DGND = 0V, T = T to T , unless otherwise noted. CC REF OUT1 OUT2 A MIN MAX SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Accuracy Resolution l 12 Bits INL Integral Nonlinearity (Note 1) l 0.5 LSB DNL Differential Nonlinearity Guaranteed Monotonic, T to T l 0.5 LSB MIN MAX GE Gain Error (Note 2), T = 25C 1 LSB A T to T l 2 LSB MIN MAX Gain Temperature Coefficient (Note 3) Gain/Temperature l 1 5 ppm/C I OUT1 A, OUT1 B Leakage Current (Note 4), T = 25C 5nA LEAKAGE A T to T l 25 nA MIN MAX Zero-Scale Error T = 25C 0.03 LSB A T to T l 0.15 LSB MIN MAX PSRR Power Supply Rejection V = 5V 10% l 0.0001 0.002 %/% CC Reference Input R V Input Resistance l 811 15 k REF REF V , V Input Resistance Match l 3% REFA REFB AC Performance (Note 3) Digital-to-Analog Glitch Impulse (Notes 5, 6) 1 nV-s Multiplying Feedthrough Error (Note 11) 89 80 dB Output Current Settling Time (Note 5) To 0.01% for Full-Scale Change 0.3 0.8 s Channel-to-Channel Isolation (Note 7) 90 dB Digital Crosstalk (Notes 5, 8) 1 nV-s Output Noise Voltage Density (Note 9) 13 nV/Hz THD Total Harmonic Distortion (Note 10) 108 92 dB Multiplying Bandwidth (Note 12) 1 MHz 2 U WWW U WU