參數(shù)資料
型號： TDA8505
廠商： NXP SEMICONDUCTORS
元件分類： 顏色信號轉(zhuǎn)換
英文描述： SECAM encoder
中文描述： COLOR SIGNAL ENCODER, PDIP32
封裝： PLASTIC, SOT-232-1, SDIP-32
文件頁數(shù)： 14/32頁
文件大?。?/td> 466K
代理商： TDA8505
July 1994
14
Philips Semiconductors
Preliminary specification
SECAM encoder
TDA8505
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134); all voltages referenced to V
SSA
pin 10.
THERMAL CHARACTERISTICS
DC CHARACTERISTICS
V
CC
and V
DD
= 5 V; T
amb
= 25
°
C; all voltages referenced to pins 10 and 30; unless otherwise specified.
AC CHARACTERISTICS
V
CC
and V
DD
= 5 V; T
amb
= 25
°
C; composite sync signal connected to pin 29; unless otherwise specified.
SYMBOL
PARAMETER
MIN.
MAX.
UNIT
V
DDA
V
DDD
V
ext
T
stg
T
amb
analog supply voltage for encoder part
digital supply voltage
external supply voltage for sandcastle generation
storage temperature
operating ambient temperature
0
0
0
65
25
5.5
5.5
13.2
+150
+70
V
V
V
°
C
°
C
SYMBOL
PARAMETER
VALUE
UNIT
R
th j-a
thermal resistance from junction to ambient in free air
60
K/W
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
V
DDA
V
DDD
I
DDA
I
DDD
V
ext
P
tot
V
ref
analog supply voltage for encoder part (pin 8)
digital supply voltage (pin 32)
analog supply current
digital supply current
external supply voltage for sandcastle generation
total power dissipation
reference voltage output (pin 17)
4.5
4.5
0
2.425
5.0
5.0
39
4
8 to 12
215
2.5
5.5
5.5
13.2
2.575
V
V
mA
mA
V
mW
V
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Encoder circuit: input stage (pins 1, 3, 5, 7, 9 and 11; black level = clamping level
V
n(max)
V
n(min)
I
bias(max)
V
I
voltage from black level positive
voltage from black level negative
maximum input bias current
input voltage clamped
1.2
0.9
V
17
1
V
V
μ
A
V
only pins 1, 3 and 5
V
I
= V
17
input capacitor
connected to ground
I
I
= 1 mA
I
O
= 1 mA
Z
I
input clamping impedance
80
80
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