LT1256CN Linear Technology Corporation, LT1256CN Datasheet
LT1256CN
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LT1256CN Summary of contents
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... Low Differential Gain and Phase: 0.02%, 0.02 U APPLICATIONS Composite Video Gain Control RGB, YUV Video Gain Control Video Faders, Keyers Gamma Correction Amplifiers Audio Gain Control, Faders Multipliers, Modulators Electronically Tunable Filters , LTC and LT are registered trademarks of Linear Technology Corporation. U TYPICAL APPLICATION Two-Input Video Fader 1 LT1251/LT1256 IN1 + + ...
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... S Package INFORMATION ORDER PART TOP VIEW NUMBER IN2 – – FB2 13 CONTROL LT1251CN LT1251CS C FS – – LT1256CN FS R LT1256CS (Note OUT S PACKAGE 14-LEAD PLASTIC SO = 150 ( 150 C, = 100 2.5V NULL = Open, Pins 5,10 = GND MIN TYP MAX 0 0.1 0.1 5.0 ...
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U W SIG AL A PLIFIER AC CHARACTERISTICS 5V RMS unless otherwise noted. SYMBOL PARAMETER Gain Supply Rejection External Resistor Gain 50% Input 1 SR Slew Rate ...
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... Note 2: Commercial grade parts are designed to operate over the temperature range of – but are neither tested nor guaranteed beyond Industrial grade parts specified and tested over – are available on special request. Consult factory. Note calculated from the ambient temperature T J dissipation P according to the following formulas: D LT1251CN/LT1256CN • LT1251CS/LT1256CS: T ...
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W U TYPICAL PERFORMANCE CHARACTERISTICS LT1251 Gain vs Control Voltage 1.0 0.8 IN2 0 2.5V FS 0.4 IN1 0 0.5 1.0 1.5 2.0 2.5 CONTROL VOLTAGE (V) 1251/56 G01 LT1251/LT1256 Control Path Bandwidth 10 VOLTAGE DRIVE ...
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LT1251/LT1256 W U TYPICAL PERFORMANCE CHARACTERISTICS Bandwidth vs Feedback Resistance 100 PEAKING 0.5dB PEAKING 5.0dB ±15V ± ...
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W U TYPICAL PERFORMANCE CHARACTERISTICS Supply Current vs Full-Scale Voltage INTERNAL RESISTORS – 125 ...
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LT1251/LT1256 W U TYPICAL PERFORMANCE CHARACTERISTICS Slew Rate vs Full-Scale Reference Voltage 350 300 V = 15V S 250 200 150 100 0.5 1.0 1.5 2.0 2.5 FULL-SCALE REFERENCE ...
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PLIFIED SCHE ATIC 250 Q29 D1 D2 Q21 Q22 IN1 I 7 Q25 Q26 D3 D4 Q23 Q24 ...
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LT1251/LT1256 U U APPLICATIONS INFORMATION Supply Voltage The LT1251/LT1256 are high speed amplifiers. To prevent problems, use a ground plane with point-to-point wiring and small bypass capacitors (0. 0 each supply pin. For good settling characteristics, ...
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U U APPLICATIONS INFORMATION 100 0.5 1.0 1.5 CONTROL VOLTAGE (V) Figure 1. Linear Gain Control from 0 to 101 Capacitive Loads Increasing the value of the ...
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LT1251/LT1256 U U APPLICATIONS INFORMATION Signal Path Description Figure 2 is the basic block diagram of the LT1251/LT1256 signal path with external resistors R Both input stages ...
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U U APPLICATIONS INFORMATION In low gain applications, R and R are small compared the feedback resistors and therefore we can simplify the equation to ...
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LT1251/LT1256 APPLICATIONS INFORMATION Control Circuit Description + – CONTROL Figure 3. Control Circuit Block Diagram ...
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U TYPICAL APPLICATIONS 1MHz CARRIER 220k 2.5VDC INPUT AUDIO MODULATION Single Supply Inverting AC Amplifier 1.5k V1 LT1251/LT1256 2 R1 – 20k 20k 10 ...
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LT1251/LT1256 U TYPICAL APPLICATIONS R G 100 – LT1252 Controlled Gain, Voltage-to-Current Converter (Current Source LT1256 ...
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U TYPICAL APPLICATIONS LT1251/LT1256 2k 2 – 600 200 – CONTROL VOLTAGE 1.5k LT1251/LT1256 1.5k 2 – ...
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LT1251/LT1256 U TYPICAL APPLICATIONS 0.001 F 470 – 430 1/2 R3 LT1253 470 150 100pF R9 1.5k LT1256 – – 1k ...
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U TYPICAL APPLICATIONS 1k 1k – LT1252 + 500 Center Frequency vs Control Voltage V 350 V = 2.5V FS 300 250 200 150 100 0.5 1.0 1.5 V (V) State Variable Filter with Adjustable ...
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LT1251/LT1256 W W ACRO ODEL TM For PSpice * * Linear Technology LT1251/LT1256 VIDEO FADER MACROMODEL * Written: 3-11-1994 BY WILLIAM H. GROSS. * Corrected: 7-15-1996 * Connections: as per datasheet pinout *1=first noninverting input *2=first inverting input *3=control voltage ...
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W W ACRO ODEL *full scale amp IBFS 12 0 –300NA RIFS 12 0 100MEG C12 12 0 1PF R12 12 12A 1600 CBWFS 12A 0 10PF EFS 12B 0 12A VOSFS 12B 11 –5MV C11 11 0 1PF RFS ...
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LT1251/LT1256 W W ACRO ODEL PIN # IN NODE # IN FIRST INPUT STAGE V OS1 17M 500nA 1.5pF SECOND INPUT STAGE V OS2 13A C14 ...
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... 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. ...
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... Modulation Gain vs Control Voltage 1.0 V 0.8 V 0.6 0.4 0.2 0 –0 –0.4 1.5k –0.6 –0.8 –1.0 0 0.5 1.0 1.5 CONTROL VOLTAGE, PIN 3 ( OUT 1251/56 TA10b LT/GP 0896 REV A 5K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1994 = ± 2.5V FS 2.0 2.5 1251/56 TA04b ...