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Final Electrical Specifications
LT1675 250MHz, RGB Multiplexer with Current Feedback Amplifiers
September 1998
FEATURES
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100MHz Pixel Switching - 3dB Bandwidth: 250MHz Small 16-Pin SSOP Package Channel Switching Time: 2.5ns Expandable to Larger Arrays Drives Cables Directly High Slew Rate: 1100V/s Low Switching Transient: 50mV Shutdown Supply Current: 0mA Output Short-Circuit Protected
current feedback amplifiers. The current feedback amplifiers drive double-terminated 50 or 75 cables and are configured for a fixed gain of 2, eliminating six external gain setting resistors. The SPDT switches are designed to be break-before-make to minimize unwanted signals coupling to the input. The key to the LT1675 fast switching speed is Linear 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 professional video monitors. The input-referred switching transient is only 50mVP-P and lasts just 5ns, making it virtually undetectable. Power supply requirements are 4V to 6V and power dissipation is only 300mW on 5V. The expandable feature uses the disable pin to reduce the power dissipation to near 0mW in the off parts. Unlike competitive solutions that are in bulky high pin count packages, the LT1675 is in a 16-lead narrow body SSOP. This small footprint, the size of an SO-8, results in a very clean high performance solution.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIONS
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RGB Switching Workstation Graphics Pixel Switching Coaxial Cable Drivers High Speed Signal Processing
DESCRIPTION
The LT (R)1675 is a high speed RGB multiplexer designed for pixel switching and fast workstation graphics. Included on chip are three SPDT switches and three
TYPICAL APPLICATION
High Speed RGB MUX
RED 1 75 +2 GREEN 1 75 75 BLUE 1 75 RED 2 75 GREEN 2 75 SELECT RGB1/RGB2 BLUE 2 75 +1 ENABLE
1675 TA01
+1
+1 CABLE
+1
+2
+1
+2
+1
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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
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Select Pin Switches Inputs at 100MHz
V+ 75 CABLE VOUT RED 75
3V SELECT LOGIC PIN 10 0V RED OUT 1V 500mV/DIV 0V RED 1 = 0V, RED 2 = 1V, RL = 100 MEASURED BETWEEN 50 BACK TERMINATION AND 1674 TA02 50 LOAD
1V/DIV
VOUT GREEN 75 75 CABLE VOUT BLUE 75 V-
1
LT1675
ABSOLUTE MAXIMUM RATINGS
(Note 1)
PACKAGE/ORDER INFORMATION
TOP VIEW RED 1 GREEN 1 BLUE 1 GND GND RED 2 GREEN 2 BLUE 2 1 2 3 4 5 6 7 8 16 V + 15 VOUT RED 14 VOUT GREEN 13 VOUT BLUE 12 V - 11 V - 10 SELECT 9 ENABLE
Supply Voltage ..................................................... 6.3V Inputs, ENABLE and SELECT, Current ................ 20mA Output Short-Circuit Duration (Note 2) ......... Continuous Specified Temperature Range (Note 3) ....... 0C to 70C Operating Temperature Range ................ - 40C to 85C Storage Temperature Range ................. - 65C to 150C Junction Temperature (Note 4) ............................ 150C Lead Temperature (Soldering, 10 sec).................. 300C
ORDER PART NUMBER LT1675CGN GN PART MARKING 1675C
GN PACKAGE 16-LEAD PLASTIC SSOP NARROW TJMAX = 150C, JA = 120C/ W
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS
PARAMETER Output Offset Voltage Output Offset Matching Input Current Input Resistance PSRR DC Gain Error 0V to 1V CONDITIONS
0C TA 70C, VS = 5V, RL = , VIN = 0V (Pins 1,2,3,6,7,8), ENABLE = 0V, unless otherwise specified.
MIN
q q q q q q q q q q q q q q q q q q q q q q q q q
TYP 20 5 - 12
MAX 40 20 - 30
UNITS mV mV A k dB
Any Input Selected Between Outputs R1 to R2, G1 to G2, B1 to B2 Any Input Selected VIN = 1V VS =2.6V to 6V, Measured at Output VIN = 1V, RL = VIN = 1V, RL = 150 VIN = 1V, RL = 75 VIN = -1V, RL = VIN = -1V, RL = 150 VIN = -1V, RL = 75 VIN = 2V, RL = VIN = 2V, RL = 150 VIN = 2V, RL = 75 VIN = - 2V, RL = VIN = - 2V, RL = 150 VIN = - 2V, RL = 75
100 38
700 50 3 4 5 3 4 8 6 8 10 6 8 20
DC Gain Error 0V to -1V
Output Voltage
3.1 2.8 2.5 - 3.1 - 2.7 - 2.4 1.1 50 25
3.4 3.0 2.8 - 3.3 - 3.0 - 2.6 1.5 70 33 1 450 90 42 100 600 180 0.8 2.0
Disabled Output Impedance Maximum Output Current Supply Current ENABLE Pin Current SELECT Pin Current SELECT Low SELECT High
ENABLE Open VIN = 1V, VO = 0V ENABLE = 0V ENABLE = 4.7V ENABLE= 0V SELECT = 0V SELECT (See Truth Table) SELECT (See Truth Table)
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% % % % % % V V V V V V k mA mA A A A V V
LT1675
AC CHARACTERISTICS
PARAMETER Slew Rate Full Power Bandwidth (Note 5) Small-Signal -3dB Bandwidth Gain Flatness Gain Matching Channel-to-Channel Select Time Delay Time Switching Time Enable Time Disable Time Input Pin Capacitance SELECT Pin Capacitance ENABLE Pin Capacitance Output Pin Capacitance (Disabled) Small-Signal Rise Time Propagation Delay Overshoot On-Channel to Off-Channel Crosstalk Chip Disable Crosstalk Channel Select Output Transient Differential Gain (Note 6) Differential Phase (Note 6)
0C TA 70C, VS = 5V, RL = 150, VIN = 0V (Pins 1,2,3,6,7,8), ENABLE = 0V, unless otherwise specified.
CONDITIONS VOUT = 5VP-P VOUT =6VP-P Less Than 1dB Peaking Less Than 0.1dB R to G to B R1 to R2, G1 to G2, B1 to B2 R1 = 0V, R2 = 1V Measured from Time SELECT Pin Crosses Logic Threshold Time for VOUT to Go from 0V to 1V MIN TYP 1100 58 250 70 0.10 0.01 5.0 2.5 10 100 2 2.2 2.1 ENABLE Open VIN = 300mVP-P, RL = 100 VIN = 300mVP-P, RL = 100 VIN = 300mVP-P, RL = 100 Measured at 10MHz Measured at 10MHz, ENABLE Open Measured Between Back Termination and Load 4.4 1.85 3 10 60 90 50 0.07 0.05 MAX UNITS V/s MHz MHz MHz dB dB ns ns ns ns pF pF pF pF ns ns % dB dB mVP-P % DEG
The q denotes specifications that apply over the specified temperature range. Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: May require a heat sink. Note 3: The LT1675 is guaranteed to meet specified performance from 0C to 70C and is designed, characterized and expected to meet these extended temperature limits, but are not tested at - 40C and 85C. Guaranteed I grade parts are available; consult factory. Note 4: TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formula: TJ = TA + (PD)(120C/W) Note 5: Full power bandwidth is calculated from the slew rate measurement: FPBW = SR/2VPEAK.
Note 6: Differential Gain and Phase are measured using a Tektronix TSG120 YC/NTSC signal generator and a Tektronix 1780R Video Measurement Set. The resolution of this equipment is 0.1% and 0.1. Nine identical MUXs were cascaded giving an effective resolution of 0.011% and 0.011.
Truth Table
SELECT 1 0 X ENABLE 0 0 1 RED OUT RED 1 RED 2 OFF GREEN OUT GREEN 1 GREEN 2 OFF BLUE OUT BLUE 1 BLUE 2 OFF
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LT1675 TYPICAL PERFORMANCE CHARACTERISTICS
Gain and Phase vs Frequency
5 4 3 2 GAIN (dB) 1 0 -1 -2 -3 -4 CL = 0pF RL = 150 1M 10M 100M FREQUENCY (Hz) GAIN PHASE 0 -20 -40 -60 PHASE (DEG) 6 5 4 3 RL = 150 CL = 10pF CL = 5pF CL = 3pF GAIN (dB)
GAIN (dB)
-5 100k
- 3dB Bandwidth vs Supply Voltage
300 280 260
FREQUENCY (MHz)
RL = 150
CROSSTALK REJECTION (dB)
CROSSTALK REJECTION (dB)
240 220 200 180 160 140 120 100 2 5 4 3 SUPPLY VOLTAGE (V) 6
1675 G04
Crosstalk Rejection vs Frequency (Disabled)
-10 70
POWER SUPPLY REJECTION RATIO (dB)
-20 CROSSTALK REJECTION (dB) -30 -40 -50 -60 -70 -80 -90 -100
RS = 75 RL = 150
40 30 20 10 0 -10 -20 -30 100k 1M -PSRR
OUTPUT VOLTAGE (VP-P)
-110 100k
1M
10M 100M FREQUENCY (Hz)
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UW
1675 G01 1675 G06
Frequency Response with Capacitive Loads
6.5 6.4 6.3 6.2 6.1 6.0 5.9 5.8 5.7 5.6 1M 10M 100M FREQUENCY (Hz) 1G
1675 G02
Gain vs Frequency
RL = 100
-80 -100 -120 -140 -160 -180 -200 1G
2 1 0 -1 -2 -3 -4 100k
CL = 0pF
RG B
5.5 10k
100k
1M 10M FREQUENCY (Hz)
100M
1675 G03
Crosstalk Rejection vs Frequency
-30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 100k 1M 10M 100M FREQUENCY (Hz) 1G
1675 G05
Crosstalk Rejection vs Frequency
20 10 0 -10 -20 -30 -40 -50 -60 -70 -80 100k 1M 10M 100M FREQUENCY (Hz) 1G
1675 G23
RS = 75 RL = 150 R1 DRIVEN R2 SELECTED
RS = 75 RL = 150 G1 DRIVEN R1 SELECTED
Power Supply Rejection Ratio vs Frequency
60 50 +PSRR VS = 5V TA = 25C RL = 150 8 7 6 5 4 3 2
Undistorted Output Swing vs Frequency
VS = 5V RL = 150
1G
10M 100M FREQUENCY (Hz)
1G
1675 G07
1M
10M 100M FREQUENCY (Hz)
1G
1675 G08
LT1675 TYPICAL PERFORMANCE CHARACTERISTICS
Output Impedance vs Frequency
10k DISABLED OUTPUT IMPEDANCE () 1k -40 SUPPLY CURRENT (mA) -30 RL = 150 VO = 2VP-P
DISTORTION (dBc)
100
10 -70 ENABLED 1 100k -80 1M 10M 100M FREQUENCY (Hz) 1G
1675 G09
Input Bias Current vs Input Voltage
15 10
INPUT BIAS CURRENT (A)
OUTPUT SHORT-CIRCUIT CURRENT (mA)
VS = 5V
5 0 -5 -10 -15 -20 -25 -30 -3 -2 -1 0 1 INPUT VOLTAGE (V) 2 3
1675 G12
75 70 65 60 55 50 -50 -25 0 25
GAIN ERROR (%)
125C -55C 25C
DC Gain Error vs Temperature
12 10 GAIN ERROR (%) 8 RL = 75 6 4 2 RL = 150 0 -50 -25 50 25 75 0 TEMPERATURE (C) 100 125 VS = 5V VIN = -1V
OUTPUT VOLTAGE (V)
UW
2nd and 3rd Harmonic Distortion vs Frequency
40 35 30 25
Supply Current vs Supply Voltage
RL =
2ND -50 3RD -60
125C -55C
20 15 10 5 0
25C
1
10 FREQUENCY (MHz)
100
LTXXXX 1675 G10
0
1
2 3 4 SUPPLY VOLTAGE (V)
5
6
1675 G11
Output Short-Circuit Current vs Temperature
90 85 80 SOURCING VIN = 1V VS = 5V 3 4
DC Gain Error vs Temperature
VS = 5V VIN = 1V RL = 75
2
RL = 150
SINKING VIN = -1V
1
50
75
100
125
0 -50 -25
0
25
50
75
100
125
TEMPERATURE (C)
1675 G13
TEMPERATURE (C)
1675 G14
Output Voltage vs Input Voltage
4 3 2 1 0 -1 -2 -3 -4 -2 -1 1 0 INPUT VOLTAGE (V) 2
1675 G16
VS = 5V TA = 25C
RL = RL = 75 RL = 150
1675 G15
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LT1675 TYPICAL PERFORMANCE CHARACTERISTICS
Input Bias Current vs Temperature
-10 OUTPUT OFFSET VOLTAGE (mV) VS = 5V VIN = 0V
INPUT BIAS CURRENT (A)
-11
-12
-13 -50 -25
50 25 75 0 TEMPERATURE (C)
Toggling RED 2 to RED 1
3V SELECT PIN 10 0V RED OUT PIN 15 RED OUT PIN 15 1V/DIV 1V/DIV RED 1 IN
RED 1 = 0V RED 2 = UNCORRELATED SINEWAVE RL = 150, 10pF SCOPE PROBE
Small-Signal Rise Time
VGEN
VOUT
0V RL = 100 MEASURED WITH FET PROBES ENABLE AND DISABLE OF UNCORRELATED SINEWAVE 1675 G22 RL = 150
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UW
Output Offset Voltage vs Temperature
20 VS = 5V 15
10
5
100
125
0 -50 -25
50 25 75 0 TEMPERATURE (C)
100
125
1675 G17
1675 G18
Slew Rate
1V/DIV
2V/DIV
1675 G19
MEASURED AT PIN 15 RL = 150, 10pF SCOPE PROBE SR = 1100V/s
1675 G20
Enable and Disable
50mV/DIV
5V ENABLE PIN 9 0V RED OUT 0V PIN 15
2V/DIV
50mV/DIV
2V/DIV
1675 G21
LT1675
PIN FUNCTIONS
RED 1 (Pin 1): Red 1 Input. The 1V video input signal to be switched is applied to this pin. If 2V are applied to this pin, VOUT RED will clip. The input must be terminated. GREEN 1 (Pin 2): Green 1 Input. The 1V video input signal to be switched is applied to this pin. If 2V are applied to this pin, VOUT GREEN will clip. The input must be terminated. BLUE 1 (Pin 3): Blue 1 Input. The 1V video input signal to be switched is applied to this pin. If 2V are applied to this pin, VOUT BLUE will clip. The input must be terminated. GND (Pins 4, 5): Signal Ground. Connect to ground plane. RED 2 (Pin 6): Red 2 Input. The 1V video input signal to be switched is applied to this pin. If 2V are applied to this pin, VOUT RED will clip. The input must be terminated. GREEN 2 (Pin 7): Green 2 Input. The 1V video input signal to be switched is applied to this pin. If 2V are applied to this pin, VOUT GREEN will clip. The input must be terminated. BLUE 2 (Pin 8): Blue 2 Input. The 1V video input signal to be switched is applied to this pin. If 2V are applied to this pin, VOUT BLUE will clip. The input must be terminated. ENABLE (Pin 9): Chip Enable. Ground this pin for normal operation. Take this pin to within 300mV of V +, or open to shut down the part. This pin is also used for router applications. When the part is disabled, the supply current is 10A. SELECT (Pin 10): Channel Select. Use this pin to select between RGB1 inputs and RGB2 inputs. Use this pin for fast toggling. HIGH Selects RGB1. V - (Pins 11, 12): Negative Power Supply. Connect these pins to - 5V and bypass with good tantalum capacitor (4.7F). The pin may also require a 0.1F or 0.01F depending on layout. VOUT BLUE (Pin 13): Blue Output. It is twice BLUE 1 or BLUE 2 depending on which channel is selected by Pin 10. VOUT BLUE drives 50 or 75 double-terminated cables. Do not add capacitance to this pin. VOUT GREEN (Pin 14): Green Output. It is twice GREEN 1 or GREEN 2 depending on which channel is selected by Pin 10. VOUT GREEN drives 50 or 75 double-terminated cables. Do not add capacitance to this pin. VOUT RED (Pin 15): Red Output. It is twice RED 1 or RED 2 depending on which channel is selected by Pin 10. VOUT RED drives 50 or 75 double-terminated cables. Do not add capacitance to this pin. V + (Pin 16): Positive Power Supply. Connect this pin to 5V and bypass with good tantalum capacitor (4.7F). The pin may also require a 0.1F or 0.01F depending on layout.
APPLICATIONS INFORMATION
Power Supplies The LT1675 will function with supply voltages below 2V (4V total), however, to ensure a full 1VP-P video signal (2VP-P at the output pins), the power supply voltage should be between 4V to 6V. The LT1675 is designed to operate on 5V, and at no time should the supplies exceed 6V. The power supplies should be bypassed with quality tantalum capacitors. It may be necessary to add 0.01F or 0.1F in parallel with the tantalum capacitors if there is excessive ringing on the output waveform. Even though the 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 50 or 75 cable that has an inherent 6dB loss. There are several advantages to setting the gain internally. This topology eliminates six gain set resistors, reduces the pin count of the package and eliminates stray capacitance on the sensitivity feedback node. The LT1675 fits into the small SSOP package, and these advantages lead to the smallest PC board footprint with enhanced performance.
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LT1675
APPLICATIONS INFORMATION
Fast Switching The key to the LT1675 fast switching speed is Linear Technology's proprietary high speed bipolar process. Internal switches can change state in less than 1ns, but the output of the MUX switches in about 2.5ns, as shown in Figure 1. The additional delay is due to the finite bandwidth and the slew rate of the current feedback amplifier that drives the cable. For minimum ringing, it is important to minimize the load capacitance on the output of the part. This is normally not a problem in a controlled impedance environment, but stray PC board capacitance and scope probe capacitance can degrade the pulse fidelity. Figure 2 shows the response of the output to various capacitive loads measured with a 10pF scope probe. Switching Transients This MUX includes fast current steering break-beforemake 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 50mVP-P and the duration is just 5ns. This transient is small and fast enough to not be visible on quality graphics terminals. Additionally, the break-before-make SPDT switch is open before the alternate channel is connected. This means there is no input feedthrough during switching. Figure 4 shows the amount of alternate channel that is coupled at the input.
3V SELECT PIN 10 0V RED OUT PIN 15 500mV/DIV CL = 0pF 1V/DIV CL = 20pF
RED 1 = 1V, RED 2 = 0V MEASURED BETWEEN 75 BACK TERMINATION AND 75 LOAD
1675 F01
Figure 1. Toggling at 25MHz
3V SELECT PIN 10 0V 1V/DIV SELECT PIN 10
RED OUT PIN 15 0V RL = 150, 10pF SCOPE PROBE
50mV/DIV
1675 F03
Figure 3. Input-Referred Switching Transient
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CL = 10pF
2V/DIV
MEASURED AT PIN 15 RL = 150, 10pF SCOPE PROBE
1675 F02
Figure 2. Response to Capacitive Loads
3V 1V/DIV
0V
RED 1 IN 0V PIN 1
20mV/DIV
RS = 75
1675 F04
Figure 4. Switching Transient at RED 1 (Pin 1)
LT1675
APPLICATIONS INFORMATION
Expanding Inputs In video routing applications where the ultimate speed is not mandatory, as it is in pixel switching, it is possible to expand the number of MUX inputs by shorting the LT1675 outputs together and switching with the ENABLE pins. The internal gain set resistors have a nominal value of 750 and cause a 1500 shunt across the 75 cable termination. Figure 5 shows schematically the effect of expanding the number of inputs. The effect of this loading is to cause a gain error that can be calculated by the following formula: 1575 n - 1 75 Gain Error (dB) = 6dB + 20log dB 75 + 1575 75 n -1
n . . .
750 OFF 750
75
750
75 OFF 750 R1 75 CABLE
75 1575 n-1 R2 75
750
ON 750 75
n = NUMBER OF LT1675s IN PARALLEL
1675 F05
Figure 5. Off Channels Load the Cable Termination with 1575 Each
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where n is total number of LT1675s. For example, using ten LTC1675s (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 - 0.23dB. Toggling with Chip Select between IC #1 and IC #2 is shown in Figure 8. In this case RED 1 Input is connected to 0V and RED 3 Input is connected to an uncorrelated sinewave.
R1 AV = 2 75
R2 ENABLE LT1675 #1
R3 AV = +2 75 RED OUT 75 R4 ENABLE LT1675 #2 CHIP SELECT 74HC04
1675 F06
Figure 6. Two LT1675s Build a 4-Input RGB Router
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LT1675
APPLICATIONS INFORMATION
1V RED 1 INPUT 0V 1V RED OUTPUT 0V 500mV/DIV 500mV/DIV
CHIP SELECT = 0V, IC #2 DISABLED
1675 F07
Figure 7. 4-Input Router Response
SI PLIFIED SCHE ATIC
(One Channel)
RED 1 OFF
RED 2
750 750 ENABLE LOGIC SELECT V+
GND
V-
10
-
V+
+
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CHIP 5V SELECT 0V
5V/DIV
RED 0V OUTPUT
1V/DIV
RED 1 INPUT = 0V RED 3 INPUT = UNCORRELATED SINEWAVE
1675 F08
Figure 8. 4-Input Router Toggling
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V+
V-
V-
RED VOUT
1675 SS
LT1675
PACKAGE DESCRIPTION U
Dimensions in inches (millimeters) unless otherwise noted.
GN Package 16-Lead Plastic SSOP (Narrow 0.150)
(LTC DWG # 05-08-1641)
0.189 - 0.196* (4.801 - 4.978) 16 15 14 13 12 11 10 9
0.009 (0.229) REF
0.229 - 0.244 (5.817 - 6.198)
0.150 - 0.157** (3.810 - 3.988)
1 0.015 0.004 x 45 (0.38 0.10) 0.007 - 0.0098 (0.178 - 0.249) 0.016 - 0.050 (0.406 - 1.270) * DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE 0 - 8 TYP 0.053 - 0.068 (1.351 - 1.727)
23
4
56
7
8 0.004 - 0.0098 (0.102 - 0.249)
0.008 - 0.012 (0.203 - 0.305)
0.025 (0.635) BSC
GN16 (SSOP) 0398
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LT1675
TYPICAL APPLICATION
RED 1 75
GREEN 1 75
BLUE 1 75 RED 2 75 GREEN 2 75
BLUE 2 75
RELATED PARTS
PART NUMBER LT1203/LT1205 LT1204 LT1260 DESCRIPTION 150MHz Video MUX 4-Input Video MUX with 75MHz Current Feedback Amp Low Cost Dual and Triple 130MHz Current Feedback Amp with Shutdown COMMENTS 2-Input and 4-Input, 90dB Channel Separation, Wide Supply Range Drives Cables, Adjustable Gain, 90dB Channel Separation Drives Cables, Wide Supply Range, 0A Shutdown Current
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Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX: (408) 434-0507 q www.linear-tech.com
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High Speed RGB MUX
+1
V+ 75 CABLE +2 VOUT RED 75 75 CABLE VOUT GREEN 75
+1
+1
+2
+1
75 CABLE +2 VOUT BLUE 75
+1
V- SELECT RGB1/RGB2
+1
ENABLE
1675 TA01
1675i LT/TP 0998 4K * PRINTED IN USA
(c) LINEAR TECHNOLOGY CORPORATION 1998

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