LT1792 Linear Technology, LT1792 Datasheet
LT1792
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LT1792 Summary of contents
Page 1
... LT1792 an ideal choice for amplifying low level signals from high impedance capacitive transducers. The LT1792 is unconditionally stable for gains more, even with load capacitances up to 1000pF. Other key features are 600 V V Each individual amplifier is 100% tested for voltage noise, slew rate and gain bandwidth ...
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... 11V 13.0 –10 –10V to 13V 4.5V to 20V 88 S ORDER PART NUMBER TOP VIEW LT1792ACS8 8 NC LT1792CS8 LT1792AIS8 OUT 6 LT1792IS8 V ADJ PACKAGE S8 PART MARKING = 160 C, = 190 C/W 1792A JA 1792 = 0V, unless otherwise noted. (Note 9) CM LT1792C/LT1792I TYP MAX ...
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... TYP MAX MIN TYP MAX 4800 1000 4500 4000 500 3000 13.2 13.0 13.2 12.3 12.0 12.3 3.4 2.3 3.4 5.6 4.0 5.6 4.2 5.20 4.2 5.20 4.2 5.15 4.2 5. 15V 0V LT1792AC LT1792C TYP MAX MIN TYP MAX 0.4 0.8 0.8 2.7 0.6 1.2 1.2 3 180 500 180 500 500 1800 500 1800 13.4 12.9 13.4 –10.8 –10.0 –10.8 104 3600 800 ...
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... The LT1792AC and LT1792AI grade are 100% temperature tested for the specified temperature range. Note 9: The LT1792 is measured in an automated tester in less than one second after application of power. Depending on the package used, power dissipation, heat sinking, and air flow conditions, the fully warmed-up chip temperature can higher than the ambient temperature ...
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... TEMPERATURE ( C) Power Supply Rejection Ratio vs Frequency 120 100 80 +PSRR 60 –PSRR 10k 100k 1M 100 FREQUENCY (Hz) LT1792 Voltage Noise vs Chip Temperature 15V 10k –75 –50 – TEMPERATURE ( C) 1792 G02 Common Mode Limit ...
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... LT1792 W U TYPICAL PERFOR A Gain and Phase Shift vs Frequency 15V 10pF L PHASE 30 20 GAIN 10 0 –10 0 100 FREQUENCY (MHz) 1792 G09 Output Voltage Swing vs Load Current + V – 0.8 125 –1.0 –1.2 –55 C – 1.4 –1 20V S 2 ...
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... Finer adjustments can be made with resistors in series with the potentiometer (Figure 1b). Being a low voltage noise JFET op amp, the LT1792 can replace many bipolar op amps that are used in amplifying low level signals from high impedance transducers. The ...
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... In a low source resistance (<5k) application the op amp voltage noise will dominate the total noise. This means the LT1792 will beat out any JFET op amp, only the lowest noise bipolar op amps have the edge at low source resistances. As the source resistance in- ...
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... R F noninverting mode example, the transducer current is converted to a change in voltage by the transducer capaci- tance; this voltage is then buffered by the LT1792 with a gain R1/R2 path is provided by R either the transducer impedance or an external resistor. Since R is usually several orders of magnitude greater ...
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... 16.3Hz – C OUTPUT 1792 F05 Figure 5 R4C2 = R5C3 > R2/R3) C1 OUTPUT = 0.8mV/pC* = 8.0mV/g** DC OUTPUT 2.7mV OUTPUT NOISE = 6nV 1kHz *PICOCOULOMBS **g = EARTH’S GRAVITATIONAL CONSTANT OUTPUT 1792 TA03 C3 10nF 2 – 6 LT1792 V OUT 3 + 1792 TA06 ...
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... A1 6 LT1792 2 – ASSUME VOLTAGE NOISE OF LT1792 AND 51 SOURCE RESISTOR = 4.3nV GAIN WITH n LT1792s IN PARALLEL = n –15V 3. OUTPUT NOISE = n 200 4.3nV INPUT REFERRED NOISE = 5. NOISE CURRENT AT INPUT INCREASES n TIMES LT1792 OUTPUT C2 0.022 F R2 100k 2 – ...
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... MIN DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. ** 0.018 0.003 INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE (0.457 0.076) N8 1197 COMMENTS Dual Version of LT1792, V Dual Version of LT1793, I Lower I Version of LT1792 Unity-Gain Buffer with Extended Load Capacitance Drive Capability – ...