參數(shù)資料
型號(hào): TDA4950
廠商: 意法半導(dǎo)體
英文描述: TV East/West Correction Circuit(TV東/西糾正電路)
中文描述: 電視東/西校正電路(電視東/西糾正電路)
文件頁(yè)數(shù): 2/5頁(yè)
文件大?。?/td> 101K
代理商: TDA4950
4
5
6
7
8
Q15
Q16
Q14
Q18
Q17
R2
R4
D1
Q13
R5
OUTPUT
Q12
R6
R7
Q21
Q19
Q20
R8
R3
OP2
COMPARATOR AND OUTPUT STAGE
Q4
Q13
Q2
Q1
CURRENT LIMITER
R5
Q5
OP1
Q6
Q7
Q8
Q9
Q10
Q11
R9
R10
R11
R12
R13
2
1
OP3
D2
D3
Z1
Q22
3
FULL-WAVE RECTIFIER
PARABOLA NETWORK
CURRENT REFERENCE
GND
+V
S
I
IN
V
S
- 6 V
BE
V
S
- 3 V
BE
I
REF
V
REF
TDA4950
4
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol
V
S
I
S
P
tot
T
stg
, T
j
Parameter
Value
35
500
800
– 25, +150
Unit
V
mA
mW
°
C
Supply Voltage
Supply Current
Power Dissipation at T
amb
= 70
°
C
Storage and Junction Temperature
4
THERMAL DATA
Symbol
R
th (j-a)
R
th (j-c)
Parameter
Value
100
70
Unit
°
C/W
°
C/W
Thermal Resistance Junction-ambient
Thermal Resistance Junction-pin (4)
Max.
Max.
4
ELECTRICAL CHARACTERISTICS
(T
amb
= 25
o
C, V
S
= 26 V, V
fr
= 0, S1 and S2 in "a" position,
refer to test circuit unless otherwise specified)
Symbol
V
S
I
S
V
ref
– I
ref
V
7(A)
V
7(B)
Parameter
Test Conditions
Min.
17
Typ.
24
4.5
8.0
0.73
16.0
15
Max.
30
7
8.8
Unit
V
mA
V
mA
V
V
Supply Voltage
Supply Current
Internal Reference Voltage
Internal Reference Current
Pin 7 Output Voltage
Pin 7 Output Voltage
7.6
V
ref
/R3
I
fr
= 0
μ
A, see Figure 2
I
fr
= 30
μ
A, see Figure 2
15.3
16.7
4
TDA4950
2/5
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