LT1675 LINER [Linear Technology], LT1675 Datasheet
LT1675
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LT1675 Summary of contents
Page 1
... Technology’s proprietary high speed bipolar process. This MUX can toggle between sources in excess of 100MHz, has a slew rate over 1000V/ s and has a –3dB bandwidth of 250MHz. The speed and ease of use of the LT1675 make it ideal for high performance PCs, workstations and pro- fessional video monitors. The input-referred switching transient is only 50mV virtually undetectable ...
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... V GREEN 1 OUT RED BLUE 1 OUT GREEN GND OUT BLUE – GND – RED SELECT GREEN ENABLE BLUE 2 GN PACKAGE 16-LEAD PLASTIC SSOP NARROW T = 150 C, = 120 C/ W JMAX JA ORDER PART GN PART NUMBER MARKING LT1675CGN 1675 ...
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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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... LT1675 is well behaved, bypass capacitors should be placed as close to the LT1675 as possible. Smallest Package and PC Board Space The LT1675 has the internal gain set for + 2V/V or 6dB, because it is designed to drive a double-terminated cable that has an inherent 6dB loss. There are several advantages to setting the gain internally ...
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... Gain Error (dB) = 6dB + 20log where n is total number of LT1675s. For example, using ten LT1675s (20 Red, 20 Green and 20 Blue) the Gain Error is only – 1.7dB per channel. Figure 6 shows a 4-input RGB router. The response from RED 1 Input to Red Output is shown in Figure 7 for a 25MHz square wave with Chip Select = 0V. In this case the Gain Error is – ...
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... Figure 5. Off Channels Load the Cable Termination with 1575 Each LT1675 # LT1675 #2 CHIP SELECT 74HC04 Figure 6. Two LT1675s Build a 4-Input RGB Router RED 1 INPUT RED R2 1575 OUTPUT 75 n – NUMBER OF LT1675s IN PARALLEL ...
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... 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 12 RGB Video Inverter LT1675 + 332 332 +1 – ...
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... The output of the LT1675 labeled B in the schematic is one half the weight of the A device. To properly match the 75 video cable, the output resistors are selected so the parallel combination of the two is 75 ohms. The output will never exceed peak white, which is 0 ...
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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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... RGB signals by switching in –0.286V sync is required, this voltage can be set to zero and composite blanking can be used to drive the select pin of the LT1675 in order to provide a more precise blanking level. COMMENTS 2-Input and 4-Input, 90dB Channel Separation, Wide Supply Range ...