LTC1458 Linear Technology, LTC1458 Datasheet
LTC1458
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LTC1458 Summary of contents
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... It operates from a single 4.5V to 5.5V supply dissipating only 5.5mW (I The LTC1458L has an onboard 1.22V reference and a full- scale output of 2. gain configuration. It operates from a single supply of 2.7V to 5.5V dissipating 2.4mW. Excellent DNL, low supply current and a wide range of ...
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... Maximum Junction Temperature ......................... 125 C Operating Temperature Range LTC1458C/LTC1458LC .......................... LTC1458I/LTC1458LI ...................... – Storage Temperature Range ................ – 150 C Lead Temperature (Soldering, 10 sec)................. 300 C ELECTRICAL CHARACTERISTICS V = 4.5V to 5.5V (LTC1458), 2.7V to 5.5V (LTC1458L), X1/X2 = REFLO = GND, REFHI = REFOUT unless otherwise noted. SYMBOL PARAMETER CONDITIONS DAC Resolution ...
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... ELECTRICAL CHARACTERISTICS V = 4.5V to 5.5V (LTC1458), 2.7V to 5.5V (LTC1458L), X1/X2 = REFLO = GND, REFHI = REFOUT unless otherwise noted. SYMBOL PARAMETER CONDITIONS Reference Input Capacitance Short-Circuit Current REFOUT Shorted to GND Power Supply V Positive Supply Voltage For Specified Performance, LTC1458 CC I Supply Current 4. 2. Amp DC Performance Short-Circuit Current Low ...
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... OUTPUT SINK CURRENT (mA) 1458 G04 4 Note 2: Load parallel with 100pF. Note 3: DAC switched between all 1s and the code corresponding to V for the part. Note 4: Digital inputs LTC1458 Integral Nonlinearity (INL) 2.0 1.6 1.2 0.8 0.4 0 –0.4 –0.8 –1.2 –1.6 –2.0 ...
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... W U TYPICAL PERFORMANCE CHARACTERISTICS LTC1458 Full-Scale Voltage vs Temperature 4.110 4.105 4.100 4.095 4.090 4.085 4.080 – –25 TEMPERATURE ( C) 1458 G06 PIN FUNCTIONS X1/X2 C, X1/X2 D,X1/X2 A, X1/X2 B (Pins 1, 14, 16, 27): The Input Pin that Sets the Gain for DAC C/D/A/B. When grounded the gain will be 2, i.e., output full-scale will be 2 • ...
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... CLK DAC D OUT D X1/ REFHI REFLO 12-BIT 12-BIT DAC B DAC C DAC B REGISTER REGISTER POWER-ON RESET 48-BIT SHIFT REGISTER LTC1458: 2.048V LTC1458L: 1.22V 12-BIT 12-BIT DAC A DAC D DAC A REGISTER REGISTER OUT – X1/ X1/ OUT B 25 CLR 24 ...
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... The INL error at a given input code is 1458 F01 calculated as follows: INL V OUT LTC1458/LTC1458L B11 MSB LSB ...
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... The area of the glitch is specified in (nV)(sec). Reference The LTC1458L has an internal reference of 1.22V with a full scale of 2.5V (gain of 2 configuration). The LTC1458 includes an internal 2.048V reference, making 1LSB equal to 1mV (gain of 2 configuration). When the buffer gain is 2, the external reference must be less than V capable of driving the 15k minimum DAC resistor ladder ...
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... INFORMATION Using Two DACs to Digitally Program the Full Scale and Offset of a Third Figure 2 shows how to use one LTC1458 to make a 12-bit DAC with a digitally programmable full scale and offset. DAC A and DAC B are used to control the offset and full scale of DAC C. DAC A is connected configuration and controls the offset of DAC C by moving REFLO C above ground ...
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... LTC1458/LTC1458L 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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... NOTE 0.093 – 0.104 (2.362 – 2.642) 0 – 8 TYP 0.050 (1.270) TYP 0.014 – 0.019 (0.356 – 0.482) TYP LTC1458/LTC1458L 0.697 – 0.712* (17.70 – 18.08 0.394 – 0.419 (10.007 – 10.643 ...
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... CC Multiplying DAC 2.7V to 5.5V OUT CC DAC, Full Scale: 2.5V 2.7V to 5.5V OUT CC : 4.5V to 5.5V LTC1458: 4.5V TO 5.5V LTC1458L: 2.7V TO 5.5V 0.1 F LTC1458 4.095V LTC1458L 2.5V LTC1458: 2.048V LTC1458L: 1.22V LTC1458 4.095V LTC1458L 2.5V 1458 TA03 COMMENTS 5V to 15V Single Supply, Complete V OUT SO-8 Package LTC1446 4.5V to 5.5V 4.095V ...