LT1675-1 Linear Technology, LT1675-1 Datasheet
LT1675-1
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LT1675-1 Summary of contents
Page 1
... The SPDT switches are designed to be break-before-make to minimize unwanted signals cou- pling to the input. The LT1675 single version with two inputs, a single output and is ideal for a single channel application such as video sync. The key to the LT1675 fast switching speed is Linear Technology’ ...
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... LT1675/LT1675 ABSOLUTE MAXIMUM Supply Voltage ..................................................... 6.3V Inputs, ENABLE and SELECT, Current ................ 20mA Output Short-Circuit Duration (Note 2) ......... Continuous Specified Temperature Range (Note 3) ....... PACKAGE/ORDER INFORMATION TOP VIEW + IN1 GND 2 7 ENABLE IN2 OUT – 5 SELECT V 4 MS8 PACKAGE ...
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... SELECT Pin Current LT1675 SELECT = 0V LT1675-1 SELECT = 0V SELECT Low SELECT (See Truth Table) SELECT High SELECT (See Truth Table 5V LT1675-1 (Pins 1, 3), ENABLE = 0V, unless otherwise specified 2.6V to 6V, Measured at Output 150 1V ...
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... CONDITIONS OUT P-P V =6V OUT P-P Less Than 1dB Peaking Less Than 0.1dB R2 G2 B2, LT1675-1 V IN1 Measured from Time SELECT Pin Crosses Logic Threshold Time for from OUT ENABLE Open V = 300mV , R = 100 ...
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... FREQUENCY (Hz) Power Supply Rejection Ratio vs Frequency 150 +PSRR 30 –PSRR –10 –20 –30 100k 1M 10M 100M FREQUENCY (Hz) LT1675/LT1675-1 Gain vs Frequency 6 100 L 6.4 6.3 6.2 6.1 6.0 5 5.8 5.7 5.6 5.5 1G 10k 100k 1M FREQUENCY (Hz) 1675 G02 Crosstalk Rejection vs Frequency 150 ...
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... Negative DC Gain Error vs Temperature – 150 L 0 – 100 125 –25 0 TEMPERATURE ( C) 1675 G15 LT1675-1 Supply Current vs Supply Voltage 125 C 8 – SUPPLY VOLTAGE ( V) 1675 G24 ...
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... SR = 1100V/ s 1675 G19 Enable and Disable 5V 50mV/DIV ENABLE PIN 9 0V RED OUT 50mV/DIV 0V PIN 15 ENABLE AND DISABLE OF UNCORRELATED SINEWAVE 1675 G21 R L LT1675/LT1675 – 100 125 TEMPERATURE ( C) 1675 G18 1V/DIV 2V/DIV = 150 , 10pF SCOPE PROBE 1675 G20 2V/DIV ...
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... Take this pin to within 300mV of V shut down the part. This pin is also used for router applications. When the part is disabled, the supply current LT1675-1 V (Pin 1): The 1V video input signal to be switched is IN1 applied to this pin are applied to this pin, V clip ...
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... AND 75 LOAD Figure 1. Toggling at 25MHz W U SSOP package, and these advantages lead to the smallest PC board footprint with enhanced performance. The LT1675-1 eliminates two gain set resistors and is available video signal P-P in the tiny MSOP package and the cost-effective SO-8 package. Fast Switching The key to the LT1675 fast switching speed is Linear Technology’ ...
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... LT1675/LT1675 APPLICATIONS INFORMATION Switching Transients This MUX includes fast current steering break-before- make SPDT switches that minimize switching glitches. The switching transients of Figure 3 are input-referred (measured between 75 back termination and the 75 load). The glitch is only 50mV and the duration is just P-P 5ns ...
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... IN PARALLEL 1675 F05 5V CHIP SELECT 0V 75 RED 0V OUTPUT ENABLE RED 1 INPUT = 0V RED 3 INPUT = UNCORRELATED SINEWAVE 75 RED OUT 75 ENABLE 1675 F06 LT1675/LT1675-1 CHIP SELECT = 0V DISABLED 1675 F07 Figure 7. 4-Input Router Response 5V/DIV 1V/DIV 1675 F08 Figure 8. 4-Input Router Toggling 500mV/DIV 500mV/DIV 11 ...
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... LT1675/LT1675-1 U TYPICAL APPLICATIO S RED 97.6 VIDEO IN GREEN 97.6 BLUE 97.6 5V 10k 1.25V 0.714V LT1634 10k This circuit is useful for viewing photographic negatives on video. A single channel can be used for composite or monochrome video. The inverting amplifier stages are only switched in during active video so the blanking, sync ...
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... The output will never exceed peak white, which is 0.714V for this NTSC-related RGB video. The reference white signal is adjustable to lower than peak white to make the effect less intrusive, if desired. LT1675/LT1675 CABLE 113 ...
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... LT1675/LT1675 PLIFIED SCHE ATIC ENABLE LOGIC SELECT GND 14 (LT1675-1, LT1675 One Channel) V RED 1 RED 2 – V OFF + – + RED V – OUT 750 750 + – V 1675 SS ...
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... TYP LT1675/LT1675-1 0.189 – 0.196* (4.801 – 4.978 0.229 – 0.244 0.150 – 0.157** (5.817 – 6.198) (3.810 – 3.988) ...
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... LT1675/LT1675-1 U TYPICAL APPLICATION 5V CLOCK IS CLR ENP ENT SUBCARRIER 4 CLK QA DIVIDED 157.343kHz 5V A 74LS163 LOAD COMPOSITE BLANKING 0.714V B 0 0.714V R 0 0.714V RGB color bar test pattern is easily generated by dividing down a suitable clock. To form a stable pattern, the clock must be synchronous with the horizontal scan rate ...