LTC7543

LTC7543 LINER | Alldatasheet

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Improved Industry Standard Serial 12-Bit Multiplying DACs n Improved Direct Replacement for AD7543 and DAC-8143 n Low Cost n DNL and INL Over Temperature: ±0.5LSB n Easy, Fast and Flexible Serial Interface n Daisy-Chain 3-Wire Interface for Multiple DAC Systems (LTC8143) n 1LSB Maximum Gain Error Over Temperature Eliminates Adjustment n Asynchronous Clear Input for Initialization n Four-Quadrant Multiplication n Low Power Consumption n 16-Pin PDIP and SO Packages The LTC 7543/LTC8143 are serial-input 12-bit multiply- ing digital-to-analog converters (DACs). They are superior pin compatible replacements for the AD7543 and DAC-8143. Improvements include better accuracy, better stability over temperature and supply variations, lower sensitivity to output amplifier offset, tighter timing speci- fications and lower output capacitance. An easy-to-use serial interface includes an asynchronous CLEAR input for systems requiring initialization to a known state. The LTC8143 has a serial data output to allow daisy- chaining multiple DACs on a 3-wire interface bus. These DACs are extremely versatile. They can be used for 2-quadrant and 4-quadrant multiplying, programmable gain and single supply applications, such as noninverting voltage output and biased or offset ground mode. Parts are available in 16-pin PDIP and SO packages and are specified over the extended industrial temperature range, –40 °C to 85°C. FEATURES DESCRIPTIONU n Process Control and Industrial Automation n Remote Microprocessor-Controlled Systems n Digitally Controlled Filters and Power Supplies n Programmable Gain Amplifiers n Automatic Test Equipment APPLICATIONSU , LTC and LT are registered trademarks of Linear Technology Corporation. TYPICAL APPLICATIONU Multiplying DAC Has Easy 3-Wire Serial Interface VDD VREF LTC7543 LTC8143 RFB AGNDDGND 312 VIN CLOCK DATA LOAD STB1 SRI LD1 15 16 OUT 1 33pF VOUT 7543/8143 TA01 OUT 2 LT®1097 Integral Nonlinearity Over Temperature DIGITAL INPUT CODE INTEGRAL NONLINEARITY (LSB) 4095 7543/8143 TA02 1024 2048 3072 1.0 0.5 –0.5 –1.0 512 1536 2560 3584 TA = 85°C TA = 25°C TA = –40°C

ABSOLUTE MAXIMUM RATINGSW WW U PACKAGE/ORDER INFORMATIONW UU LTC7543GKN LTC7543KN LTC7543GKSW LTC7543KSW LTC8143EN LTC8143FN LTC8143ESW LTC8143FSW ORDER PART NUMBER Consult factory for Military grade parts. TJMAX = 150°C, θJA = 100°C/ W (N) TJMAX = 150°C, θJA = 130°C/ W (SW) VDD = 5V, VREF = 10V, VOUT1 = VOUT2 = AGND = DGND =0V, TA = TMIN to TMAX, unless otherwise specified. ACCURACY CHARACTERISTICS – 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 MIN to TMAX l ±0.5 ±0.5 LSB GE Gain Error (Note 2) T A = 25°C ± 1 ± 2 LSB TMIN to TMAX l ± 1 ± 2 LSB Gain Temperature Coefficient (Note 3) l 15 15p p m / °C (ΔGain/ΔTemp) ILKG Output Leakage Current (Note 4) T A = 25°C ± 1 ± 1n A TMIN to TMAX l ±10 ±10 nA Zero-Scale Error T A = 25°C ±0.006 ± 0.006 LSB TMIN to TMAX l ±0.06 ±0.06 LSB PSRR Power Supply Rejection Ratio V DD = 5V ±5% l ±0.0001 ±0.002 ±0.0001 ±0.002 %/% TOP VIEW SW PACKAGE 16-LEAD PLASTIC SO WIDE N PACKAGE 16-LEAD PDIP OUT 1 OUT 2 AGND STB1 LD1 SRI STB2 R FB VREF VDD CLR DGND STB4 STB3 LD2 NC (LTC7543) SRO (LTC8143) LTC7543

VDD = 5V, VREF = 10V, VOUT1 = VOUT2 = AGND = DGND = 0V, TA = TMIN to TMAX, unless otherwise specified. LTC8143E LTC8143F SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Resolution l 12 12 Bits INL Integral Nonlinearity (Note 1) l ±0.5 ± 1 LSB (Relative Accuracy) DNL Differential Nonlinearity Guaranteed Monotonic, T MIN to TMAX l ±0.5 ±1 LSB GE Gain Error (Note 2) T A = 25°C ±1 ±2 LSB TMIN to TMAX l ±2 ±2 LSB Gain Temperature Coefficient (Note 3) l 15 15p p m / °C (ΔGain/ΔTemp) ILKG Output Leakage Current (Note 4) T A = 25°C ±5 ±5n A TMIN to TMAX l ±25 ±25 nA Zero-Scale Error T A = 25°C ±0.03 ±0.03 LSB TMIN to TMAX l ±0.15 ±0.15 LSB PSRR Power Supply Rejection Ratio V DD = 5V ±5% l ± 0.0001 ±0.002 ± 0.0001 ±0.002 %/% ACCURACY CHARACTERISTICS – LTC8143 VDD = 5V, VREF = 10V, VOUT1 = VOUT2 = AGND = DGND = 0V, TA = TMIN to TMAX, unless otherwise specified. ELECTRICAL CHARACTERISTICS – LTC7543/LTC8143 LTC7543/LTC8143 ALL GRADES SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Reference Input RREF VREF Input Resistance (Note 5) l 81 1 1 5 k Ω AC Performance (Note 3) Output Current Settling Time (Notes 6, 7) l 0.25 1 µs Multiplying Feedthrough Error V REF = ±10V, 10kHz Sinewave l 0.8 2 mV P-P Digital-to-Analog Glitch Energy (Notes 6, 8) l 2 20 nV-sec THD Total Harmonic Distortion (Note 9) l –108 –92 dB Output Noise Voltage Density (Note 10) l 13 nV/ √Hz Analog Outputs (Note 3) COUT Output Capacitance DAC Register Loaded to All 1s C OUT1 l 60 90 pF COUT2 l 20 60 pF DAC Register Loaded to All 0s C OUT1 l 30 60 pF COUT2 l 50 90 pF Digital Inputs VIH Digital Input High Voltage l 2.4 V VIL Digital Input Low Voltage l 0.8 V IIN Digital Input Current V IN = 0V to VDD l 0.001 ±1 µA CIN Digital Input Capacitance (Note 3), V IN = 0V l 8p F Digital Outputs: SRO (LTC8143 Only) VOH Digital Output High I OH = –200 µA l 4V VOL Digital Output Low I OL = 1.6mA l 0.4 V

VDD = 5V, VREF = 10V, VOUT1 = VOUT2 = AGND = DGND = 0V, TA = TMIN to TMAX, unless otherwise specified. ELECTRICAL CHARACTERISTICS – LTC7543/LTC8143 The l denotes specifications which apply over the full operating temperature range. Note 1: ±0.5LSB = ±0.012% of full scale. Note 2: Using internal feedback resistor. Note 3: Guaranteed by design, not subject to test. Note 4: IOUT1 with DAC register loaded with all 0s or IOUT2 with DAC register loaded with all 1s. Note 5: Typical temperature coefficient is 100ppm/°C. Note 6: OUT 1 load = 100Ω in parallel with 13pF. Note 7: To 0.01% for a full-scale change, measured from falling edge of LD1 or LD2. Note 8: VREF = 0V. DAC register contents changed from all 0s to all 1s or from all 1s to all 0s. Note 9: VREF = 6VRMS at 1kHz. DAC register loaded with all 1s. Note 10: Calculation from en = √4KTRB where: K = Boltzmann constant (J/K°); R = resistance (Ω ); T = resistor temperature (°K); B = bandwidth (Hz). Note 11: Minimum high time for STB1, STB2, STB4. Minimum low time for STB3. Note 12. Minimum low time for STB1, STB2, STB4. Minimum high time for STB3. LTC7543/LTC8143 ALL GRADES SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Timing Characteristics (Note 3) tDS1 Serial Input to Strobe Setup Time STB1 Used as the Strobe l 50 5 ns tDS2 STB2 Used as the Strobe l 20 – 5 ns tDS3 STB3 Used as the Strobe l 0– 3 0 n s tDS4 STB4 Used as the Strobe l 0– 3 0 n s tDH1 Serial Input to Strobe Hold Time STB1 Used as the Strobe l 30 10 ns tDH2 STB2 Used as the Strobe l 50 25 ns tDH3 STB3 Used as the Strobe l 80 55 ns tDH4 STB4 Used as the Strobe l 80 55 ns tSRI Serial Input Data Pulse Width l 80 ns tSTB1, tSTB2, Strobe Pulse Width (Note 11) l 80 ns tSTB3, tSTB4 tSTB1, tSTB2, Strobe Pulse Width (Note 12) l 80 ns tSTB3, tSTB4 tLD1, tLD2 Load Pulse Width l 140 ns tASB LSB Strobed into Input Register l 0n s to Load DAC Register Time tCLR Clear Pulse Width l 80 ns SRO Timing Characteristics (LTC8143 Only) t PD STB2, STB3, STB4 Strobe to SRO C L = 50pF l 220 120 ns Propagation Delay tPD1 STB1 to SRO Propagation Delay C L = 50pF l 150 80 ns Power Supply VDD Supply Voltage l 4.75 5 5.25 V IDD Supply Current Digital Inputs = 0V or V DD l 0.1 mA Digital Inputs = VIH or VIL l 2m A (tSTB = 80ns) (tSTB = 80ns)

(MSB) BIT 2 BIT 3 BIT 4 BIT 12 (LSB) CLR CLK OUT SRO LTC8143 ONLY IN LOAD DGND VDD VREF RFB OUT 1 OUT 2 SRI7 AGND3 7543/8143 BD DAC REGISTER INPUT 12-BIT SHIFT REGISTER STB1 STB2 STB3 STB4 LD1 CLR LD2 BLOCK DIAGRAMW TI I G DIAGRAUW W SRI SRO (LTC8143 ONLY) LD1, LD2 PREVIOUS WORD BIT 1 MSB BIT 1 (MSB) PREVIOUS WORD BIT 1 (MSB) CURRENT WORD BIT 2 BIT 2 BIT 3 BIT 11 7543/8143 TD01 BIT 12 LSB BIT 12 LSB tDS1 tDS2 tDS3 tDS4 tDH1 tDH2 tDH3 tDH4 tPD tPD1 tSTB1 tSTB2 tSTB3 tSTB4 tSRI tASB tSTB1 tSTB2 tSTB3 tSTB4 tLD1 tLD2 STROBE INPUT STB1, STB2, STB4 (INVERT FOR STB3)

Table 1. LTC7543/LTC8143 Input Register

1 X X X No Input Register Operation

Table 2. LTC7543/LTC8143 DAC Register

0 X X Reset DAC Register to All 0s (Asynchronous

–10V TO 10V 15 16 1OUT 1 0.1µF (LOGIC INPUTS OMITTED FOR CLARITY) VOUT 7543/8143 TA04 OUT 2 LT1112 33pF LT 1112 Bipolar Operation (4-Quadrant Multiplication) DIGITAL INPUT BINARY NUMBER IN ANALOG OUTPUT DAC REGISTER V OUT MSB LSB 1111 1111 1111 V REF (2047/2048) 1000 0000 0001 V REF (1/2048) 1000 0000 0000 0V 0111 1111 1111 –V REF (1/2048) 0000 0000 0000 –V REF (2048/2048) = –V REF Bipolar Offset Binary Code Table Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7487 (408) 432-1900 l FAX: (408) 434-0507 l TELEX: 499-3977 LT/GP 0695 10K • PRINTED IN USA  LINEAR TECHNOLOGY CORPORA TION 1995 PACKAGE DESCRIPTIONU Dimension in inches (millimeters) unless otherwise noted. N Package 16-Lead Plastic DIP N16 0694 0.255 – 0.015* (6.477 – 0.381) 0.770* (19.558) MAX 1 2 3 4 5 6 7 8 9101112131415 0.015 (0.381) MIN 0.125 (3.175) MIN 0.130 – 0.005 (3.302 – 0.127) 0.065 (1.651) TYP 0.045 – 0.065 (1.143 – 1.651) 0.018 – 0.003 (0.457 – 0.076) 0.045 – 0.015 (1.143 – 0.381) 0.100 – 0.010 (2.540 – 0.254) 0.009 – 0.015 (0.229 – 0.381) 0.300 – 0.325 (7.620 – 8.255) 0.325 +0.025 –0.015 +0.635 –0.3818.255() *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTURSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm). S Package 16-Lead Plastic SOL SOL16 0392 NOTE: 1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS. THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS. NOTE 1 0.398 – 0.413 (10.109 – 10.490) (NOTE 2) 16 15 14 13 12 11 10 9 1 23 4 5 6 78 0.394 – 0.419 (10.007 – 10.643) 0.037 – 0.045 (0.940 – 1.143) 0.004 – 0.012 (0.102 – 0.305) 0.093 – 0.104 (2.362 – 2.642) 0.050 (1.270) TYP 0.014 – 0.019 (0.356 – 0.482) TYP 0° – 8° TYP NOTE 1 0.005 (0.127) RAD MIN 0.009 – 0.013 (0.229 – 0.330) 0.016 – 0.050 (0.406 – 1.270) 0.291 – 0.299 (7.391 – 7.595) (NOTE 2) × 45°0.010 – 0.029 (0.254 – 0.737) 2. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm). RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LTC1257 Complete Serial I/O V OUT 12-Bit DAC 5V to 15V Single Supply in 8-Pin SO and PDIP LTC1451/LTC1452/LTC1453 Complete Serial I/O V OUT 12-Bit DACs 3V/5V Single Supply in 8-Pin SO and PDIP LTC7541A Parallel I/O Mulitplying 12-Bit DAC 12-Bit Wide Input LTC8043 Serial Mulitplying 12-Bit DAC 8-Pin SO and PDIP