參數(shù)資料
型號(hào)： TDA8709AT
廠商： NXP SEMICONDUCTORS
元件分類(lèi)： 消費(fèi)家電
英文描述： Video analog input interface
中文描述： SPECIALTY CONSUMER CIRCUIT, PDSO28
封裝： PLASTIC, SO-28
文件頁(yè)數(shù)： 5/28頁(yè)
文件大小： 170K
代理商： TDA8709AT
June 1994
5
Philips Semiconductors
Product specification
Video analog input interface
TDA8709A
FUNCTIONAL DESCRIPTION
TDA8709A is an 8-bit ADC with internal clamping and a
preamplifier with adjustable gain.
The clamping value is switched via pin 27 between
digital 16 (for R, G, B signals) and digital 128 (for
chrominance or colour difference signals). While clamping
pulse at pin 27 is logic 1, the device will adjust the
clamping level to the chosen value. The output format can
be selected between binary and two's complement at
pin 28.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
MIN.
MAX.
UNIT
V
CCA
V
CCD
V
CCO
V
CC
analog supply voltage
digital supply voltage
TTL output supply voltage
supply voltage difference between V
CCA
and V
CCD
supply voltage difference between V
CCO
and V
CCD
supply voltage difference between V
CCA
and V
CCO
input voltage
output current
storage temperature
operating ambient temperature
junction temperature
0.3
0.3
0.3
0.5
0.5
1.0
0.3
55
0
0
+7.0
+7.0
+7.0
+0.5
+0.5
+1.0
+7.0
+10
+150
+70
+125
V
V
V
V
V
V
V
mA
°
C
°
C
°
C
V
I
I
O
T
stg
T
amb
T
j
SYMBOL
PARAMETER
VALUE
UNIT
R
th j-a
thermal resistance from junction to ambient in free air
SOT117-1
SOT136-1
55
70
K/W
K/W
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