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参数资料
| 型号： | LT1205CS#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 15/16页 |
| 文件大小： | 0K |
| 描述： | IC VIDEO MULTIPLEXER SPDT 16SOIC |
| 标准包装： | 2,500 |
| 功能： | 视频多路复用器 |
| 电路： | 4 x SPDT |
| 电压电源： | 双电源 |
| 电压 - 电源，单路/双路(±)： | ±5 V ~ 15 V |
| 电流 - 电源： | 20mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
8
LT1203/LT1205
U
S
A
O
PPLICATI
WU
U
I FOR ATIO
CMOS MUX Channel-to-Channel Switching Transient
OUTPUT
1V/DIV
LT1203/05 AI02
RS = 50
NOTE: 50 TIMES LARGER THAN LT1203 TRANSIENT
LT1203/05 AI03
OUTPUT
(PIN 7)
CHANNEL 1 = 0V
CHANNEL 2 = 2MHz SINEWAVE
LOGIC
(PIN 5)
LT1203 Switching Inputs
only 10mVP-P. A photo of the switching transients from a
CMOS MUX shows glitches to be 50 times larger than on
the LT1203. Also shown is the output of the LT1203
switching on and off a 2MHz sinewave cleanly and without
abnormalities.
Pixel Switching
The multiplexers are fabricated on LTC's Complementary
Bipolar Process to attain fast switching speed, high band-
width, and a wide supply voltage range compatible with
traditional video systems. Channel-to-channel switching
time and Enable time are both 25ns, therefore delay is the
same when switching between channels or between ICs.
To demonstrate the switching speed of the LT1203/LT1205
the RGB MUX of Figure 1 is used to switch RGB Worksta-
tion inputs with a 22ns pixel width. Figure 2a is a photo
showing the Workstation output and RGB MUX output.
The slight rise time degradation at the RGB MUX output is
due to the bandwidth of the LT1260 current feedback
amplifier used to drive the 75
cable. In Figure 2b, the
LT1203 switches to an input at zero at the end of the first
pixel and removes the following pixels.
+1
1
2
3
4
5
6
7
8
16
15
14
13
1
2
3
4
8
7
6
5
12
1
16
15
14
13
12
11
10
9
2
3
4
5
6
7
8
LT1260
11
10
9
+1
LT1205
LT1203/05 F01
+1
LT1203
R4
75
J4
GREEN 2
J7
LOGIC
R6
75
C1
0.1
F
C2
0.1
F
C3
4.7
F
C4
4.7
F
J6
BLUE 2
R8*
10k
R13
1.5k
R15
1.5k
R9*
10k
*OPTIONAL
R14
1.5k
R7*
10k
R5
75
J5
BLUE 1
R3
75
J3
GREEN 1
R2
75
J2
RED 2
R1
75
J1
RED 1
–
+
–
+
–
+
R12
1.5k
R10
1.5k
V+
V –
R11
1.5k
R
G
B
+
GND
J8
ENABLE
J9
RED
J10
GREEN
J11
BLUE
R16
75
R17
75
R18
75
Figure 1. RGB MUX
INPUT
1V/DIV
LOGIC
CONTROL
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