LTC1450L Linear Technology Corporation, LTC1450L Datasheet
LTC1450L
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LTC1450L Summary of contents
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... The LTC1450 operates from a 4.5V to 5.5V supply. The output can be pin strapped for 4.095V or 2.048V full-scale. It has a 2.048V internal reference. The LTC1450L operates from a 2.7V to 5.5V supply. The output can be pin strapped for 2.5V or 1.22V full-scale. It has a 1.22V internal reference. The LTC1450/LTC1450L offer true stand-alone perfor- mance ...
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... PACKAGE 24-LEAD PLASTIC SSOP T JMAX T JMAX Consult factory for Military grade parts 4.5V to 5.5V (LTC1450), 2.7V to 5.5V (LTC1450L unless otherwise noted. MIN MAX CONDITIONS Guaranteed Monotonic (Note (Note Using Internal Reference, LTC1450, T ...
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... Digital Inputs V Digital Input High Voltage IH V Digital Input Low Voltage IL V Logic Threshold Voltage LTH I Digital Input Leakage LEAK C Digital Input Capacitance 4.5V to 5.5V (LTC1450), 2.7V to 5.5V (LTC1450L unless otherwise noted. A MIN MAX CONDITIONS V V – 1.5V REFHI CC For Specified Performance, LTC1450L LTC1450 4. ...
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... LTC1450/LTC1450L ELECTRICAL CHARACTERISTICS V = 4.5V to 5.5V (LTC1450 2.7V to 3.6V (LTC1450L SYMBOL PARAMETER Switching Characteristics (Note (MSB or LSB) Pulse Width Pulse Width Setup CWS Hold CWH t Data Valid to WR Setup DWS t Data Valid to WR Hold DWH t LDAC Pulse Width ...
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... W U TYPICAL PERFORMANCE CHARACTERISTICS LTC1450L Supply Current vs Logic Input Voltage 1600 ALL LOGIC INPUTS 1400 TIED TOGETHER 1200 1000 800 600 400 200 0 0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 LOGIC INPUT VOLTAGE (V) 1450/50L G04 LTC1450 Output Offset Voltage vs Temperature 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 – 55 –35 – 105 ...
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... LTC1450/LTC1450L W U TYPICAL PERFORMANCE CHARACTERISTICS LTC1450 Midscale Transition Data = 2048 to 2047 V OUT 20mV/DIV LDAC 5V 0V 500ns/DIV 1450/50L G13 Output Voltage Full-Scale Settling 5V DATA IN 0V 000 TO FFF OUT 1mV/DIV OUTPUT LOAD 5k//10pF 5 s/DIV 1450/50L G16 6 LTC1450 Large-Scale Settling (Rising) DATA INPUTS RISING EDGE ...
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... Used to asynchronously transfer the contents of the input latches to the DAC latches which updates the output voltage. The rising edge latches the data into the DAC latches. If held low the DAC latches are transparent and data from the input latches will immediately update V CC 5.5V (LTC1450L ensure OUT . OUT 7 ...
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... WR t DWH t DWS DATA VALID DATA VALID REFOUT REFHI REFLO X1/X 2 REFERENCE LTC1450: 2.048V DAC LTC1450L: 1.22V 12-BIT DAC LATCH POWER-ON RESET UPPER 4-BIT LOWER 8-BIT INPUT LATCH INPUT LATCH D11 (MSB) D10 LDAC DAC UPDATE LTC1450/50L • ...
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... AC coupling from the digital inputs when they change state. The area of the glitch is specified in (nV) s). OUTPUT VOLTAGE 0V NEGATIVE DAC CODE OFFSET Figure 1. Effect of Negative Offset LTC1450/LTC1450L – V – (V – V )(code/4095)]/LSB OUT the given input code – LSB)/LSB ...
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... The resistor string pins can be driven when the buffer is in the CC gain of 2 configuration (2.05 for the LTC1450L). The resistance between these two pins is typically 18k (8k min). Voltage Output The output buffer for the LTC1450/LTC1450L can be configured for two different gain settings ...
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... TO 2.048V 4.5V TO 5.5V) 0 DATA (0:11) V REFOUT REFHI CC CSLSB CSMSB LTC1450 LTC1450L WR X1/X2 LDAC CLR GND REFLO LTC1450/LTC1450L RMS OUT 10 4.7 F REFHI V OUTPUT OUT X1/X2 REFLO LTC1450/50L • TA03 D IN LTC1450 • OUT IN 4096 V OUT D IN LTC1450L • 2.05 V OUT IN 4096 LTC1450/50L • TA04 11 ...
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... LTC1450/LTC1450L U TYPICAL APPLICATIONS 5V 0 FROM P DATA (0:11) V DATA BUS CSLSB CSMSB FROM P AND DECODE LOGIC WR LDAC FROM CLR SYSTEM RESET Digitally Programmable Bilateral Current Source/Sink FROM P DATA (0:11 DATA BUS CSLSB CSMSB FROM P AND LTC1450 DECODE LOGIC WR LDAC FROM ...
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... U TYPICAL APPLICATIONS 4-Quadrant Multiplying DAC Application This application shows the LTC1450L configured as a single supply 4-quadrant multiplying DAC. It uses a 5V supply and only one external component resistor tied from REFOUT to ground. (The LTC1450 can be used in a similar fashion.) The multiplying DAC allows the user to ...
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... LTC1450/LTC1450L PACKAGE DESCRIPTION 0.205 – 0.212** (5.20 – 5.38) 0.005 – 0.009 0.022 – 0.037 (0.13 – 0.22) (0.55 – 0.95) * DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ** DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE ...
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... MIN MIN 0.100 0.010 (2.540 0.254) LTC1450/LTC1450L 1.265* (32.131 0.065 (1.651) TYP 0.018 0.003 (0 ...
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... LTC1450/LTC1450L RELATED PARTS PART NUMBER DESCRIPTION LTC1257 Complete Serial I/O V LTC1451/LTC1452/LTC1453 Complete Serial I/O V LTC1446/LTC1446L Dual 12-Bit V OUT LTC1454/LTC1454L Dual 12-Bit V OUT with Added Functionality LTC1458/LTC1458L Quad 12-Bit V OUT Packages LTC7541A Parallel I/O Multiplying 12-Bit DAC LTC7543/LTC8143 Serial Multiplying 12-Bit DACs LTC7545A Parallel Latched Input Multiplying 12-Bit DAC ...