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TEA6425 데이터시트(PDF) 3 Page - STMicroelectronics

부품명 TEA6425
상세설명  VIDEO CELLULAR MATRIX
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TEA6425 데이터시트(HTML) 3 Page - STMicroelectronics

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ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VCC
Supply Voltage
12
V
VI
Voltage at Pin i to GND
0, VCC
V
Toper
Operating Ambient Temperature
0, + 70
oC
Tstg
Storage Temperature
-20, + 150
oC
THERMAL DATA
Symbol
Parameter
Value
Unit
Rth (j-a)
Junction-ambient Thermal Resistance
Min.
80
oC/W
ELECTRICAL CHARACTERISTICS (VCC =8V, Tamb =25
oC, VIN = 1V, Gain = 6.5dB, Cload = 20pF,
Rload = 4.7k
Ω ; Gain condition, clamp and 3-state are controlled by I2C bus, unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
SUPPLY
VCC
Supply Voltage
7.2
8
8.8
V
ICC
Supply Current
45
60
mA
RR
Supply Voltage Rejection
f = 1kHz
40
46
dB
VIDEO INPUTS (clamping at bottom sync level)
VIN
Max. Signal Amplitude
Clamp Active
2
VPP
Vclamp
Clamp Level
Clamp Active
1.7
2
2.3
V
VDC
Input DC Level
Clamp Inactive
2.7
3
3.3
V
IIN
Leakage Current
1 input connected to 1 output
2
5
µA
Iclamp
Clamp Current
Vclamp - 200mV
0.9
3
mA
VIDEO OUTPUTS
ROUT
Output Resistance
15
50
ZHI
Output ”off” Impedance
no load
50
k
CHI
COUT in 3-state
no load
3
pF
G1
Voltage Gain
f = 100kHz
0
0.5
1
dB
G2
Voltage Gain
f = 100kHz
6
6.5
7
dB
Vsync
Top Level Sync (Y or CVBS)
G = 6.5dB, Clamp Active
1
1.25
2
V
Vbias
Output Mean Level (chroma)
G = 0.5dB, Clamp Inactive
G = 6.5dB, Clamp Inactive
2
3
2.4
3.4
3
4
V
V
Isolation ”off” State
f = 5MHz
60
dB
Crosstalk Attenuation between Channels
f = 5MHz
50
60
dB
B
Bandwidth
Cload = 20pF, G = 6.5dB
at
± 0.5dB
at
± 1dB
at - 3dB
5
10
21
MHz
This device is controlled via the I
2C bus. 4 ad-
dresses can be selected by a 4-level detector on
Pin 7, thus enabling parallel connection of 4 de-
vices.
Via the I
2C bus :
- The input signals can be clamped at their nega-
tive peak (top sync).
- The gain factor of the outputs can be selected
between 0.5 and 6.5dB.
- Each of the 6 inputs can be connected to the 8
outputs.
- Each output can individually be set in a high
impedance state.
Two internal SVHS mixers will add the selected Y
and C inputs. Two dedicated outputs will have the
option to select this added signal also.
FUNCTIONAL DESCRIPTION
TEA6425
3/9


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