LT1794CFE Linear Technology, LT1794CFE Datasheet
LT1794CFE
Specifications of LT1794CFE
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LT1794CFE Summary of contents
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... LT1795 line driver applications. The LT1794 is available in the very small, thermally enhanced, 20-lead TSSOP for maximum port density in line driver applications. The 20-lead SW is also available. , LTC and LT are registered trademarks of Linear Technology Corporation. 12V R BIAS 24.9k ...
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... Input Noise Current Density n R Input Resistance RATINGS (Note 1) Specified Temperature Range (Note 3) .. – Junction Temperature .......................................... 150 C Storage Temperature Range ................. – 150 C Lead Temperature (Soldering, 10 sec).................. 300 ORDER PART NUMBER NC 1 LT1794CFE + V 2 LT1794IFE OUT 3 – – – – –IN 8 ...
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ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full specified temperature range, otherwise specifications are 0V, pulse tested 15V SYMBOL PARAMETER C Input Capacitance IN Input Voltage Range (Positive) ...
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LT1794 ELECTRICAL CHARACTERISTICS Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: Applies to short circuits to ground only. A short circuit between the output and either supply may ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Open-Loop Gain and Phase vs Frequency 120 100 PHASE GAIN 0 – 12V S – – 100 ...
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LT1794 W U TYPICAL PERFOR A CE CHARACTERISTICS Differential Harmonic Distortion vs Output Amplitude – 1MHz – 12V –60 I PER AMPLIFIER ...
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TEST CIRCUIT OUT (+) E SPLITTER IN OUT (–) 49.9 MINICIRCUITS ZSC5-2 APPLICATIO S I FOR ATIO The LT1794 is a high speed, 200MHz gain bandwidth product, dual voltage feedback amplifier with high output current drive capability, 500mA ...
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LT1794 U U APPLICATIO S I FOR ATIO SHDN START-UP CIRCUITRY SHDNREF BIAS SHDN SHDNREF 5 I PER AMPLIFIER (mA • I SUPPLY Figure 1. Internal Current ...
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U U APPLICATIO S I FOR ATIO Logic Controlled Operating Current The DSP controller in a typical xDSL application can have I/O pins assigned to provide logic control of the LT1794 line driver operating current. As shown in Figure 4 ...
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LT1794 U U APPLICATIO S I FOR ATIO Power Dissipation and Heat Management xDSL applications require the line driver to dissipate a significant amount of power and heat compared to other components in the system. The large peak to RMS ...
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U U APPLICATIO S I FOR ATIO With no signal being placed on the line and the amplifier biased for 10mA per amplifier supply current, the quies- cent driver power dissipation is 24V • 20mA = 480mW DQ ...
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LT1794 U U APPLICATIO S I FOR ATIO Figure 8 shows four examples of PCB metal being used for heat spreading. These are provided as a reference for what might be expected when using different combinations of metal area on ...
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U U APPLICATIO S I FOR ATIO Similar results can be obtained with the LT1794CSW in the wide SO-20 package. With this package heat is conducted – primarily through the V pins, Pins and 14 to 17; ...
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LT1794 U U APPLICATIO S I FOR ATIO + – LOW FREQUENCIES BIG = 1 ...
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U U APPLICATIO S I FOR ATIO Note that the overall gain is increased simpler method of ...
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LT1794 U U APPLICATIO S I FOR ATIO Using DC blocking capacitors, as shown in Figure 16 couple the signal to the transformer eliminates the possibility for DC current to flow under any conditions. These capacitors should be ...
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PLIFIED SCHE ATIC + V –IN – V (one amplifier shown) Q9 Q10 Q12 Q11 Q13 Q17 C1 Q14 +IN OUT Q15 C2 Q18 Q16 1794 SS LT1794 ...
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LT1794 PACKAGE DESCRIPTIO 6.60 0.10 4.50 0.10 SEE NOTE 4 RECOMMENDED SOLDER PAD LAYOUT 4.30 – 4.50* (.169 – .177) 0.45 – 0.75 0.09 – 0.20 (.018 – .030) (.0036 – .0079) NOTE: 1. CONTROLLING DIMENSION: MILLIMETERS 2. DIMENSIONS ARE ...
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... DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE ** 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. U Dimensions in inches (millimeters) unless otherwise noted ...
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... Operation, 1mV 360kHz, Differential Operation, 5V Supplies C Shutdown/Current Set Function, ADSL CO Driver Low Noise, Low Power Differential Receiver, 4mA/Amplifier 12V Operation, 7mA/Amplifier, ADSL Modem Line Driver 100 LINE 1794 F17 , 1794fs, sn1794 LT/TP 0501 4K • PRINTED IN THE USA LINEAR TECHNOLOGY CORPORATION 2001 ...