參數(shù)資料
型號(hào)： SAA4978
廠商： NXP Semiconductors N.V.
英文描述： Picture Improved Combined Network PICNIC
中文描述： 圖片改進(jìn)聯(lián)合網(wǎng)絡(luò)野餐
文件頁(yè)數(shù)： 37/56頁(yè)
文件大?。?/td> 296K
代理商： SAA4978
1999 May 03
37
Philips Semiconductors
Product specification
Picture Improved Combined Network
(PICNIC)
SAA4978H
11 CHARACTERISTICS
V
DDD
= V
DDA
= 3.3 V; AGC at 0 dB; T
amb
= 25
°
C; nominal parameter settings: 2f
H
/100 Hz mode; features transparent;
equalized frequency response test signal: EBU colour bar 100/0/75/0 “CCIR471-1” unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supplies
V
DDD
V
DDA
V
DD(I/O)
digital supply voltage
analog supply voltage
microcontroller I/O supply
voltage
digital supply voltage for
outputs
3.0
3.15
3.0
3.3
3.3
3.6
3.45
5.5
V
V
V
V
DDO
3.0
3.3
3.6
V
Dissipation
P
tot
total power dissipation
1.6
W
YUV input processing (including AGC)
Y
AGC
Y AGC setting to obtain
full ADC range
U AGC setting to obtain
full ADC range
V AGC setting to obtain
full ADC range
overall input to output gain
error between Y, U and V
gain error between
U and V inputs
V
i(Y)(b-w)
= 1.0 V (p-p);
note 1
V
i(U)
= 1.33 V (p-p); note 1 120
117
132
148
U
AGC
136
151
V
AGC
V
i(V)
= 1.05 V (p-p); note 1
117
132
148
E
G(YUV)all
f = 0 to 2.5 MHz (analog
filters off)
f = 0 to 2.5 MHz (analog
filters off) from input to
digital domain
f = 0 to 2.5 MHz (analog
filters off) from input to
output
f = 0 to 1.25 MHz (analog
filters on) from input to
digital domain
f = 0 to 2.5 MHz (analog
filters on) from input to
output
5.6
+5.6
%
E
G(UV)i
1
3.2
%
E
G(UV)all
overall gain error between
U and V
1.2
4.0
%
E
G(f)(UV)i
filtered gain error
between U and V input
2
6.4
%
E
G(f)(UV)all
overall filtered gain error
between U and V
2.5
8
%
C
i
I
LI
input capacitance
input leakage current
7
15
100
pF
nA
clamp not active;
0 < V
i
< V
DDA
+ 0.3
G
AGC(min-max)
difference in gain
between AGC minimum
and maximum
G
AGC(acc)
AGC gain accuracy digital
G
step(AGC)
step resolution gain of
AGC
9
9.5
10
dB
9
0.4
bits
%
maximum gain variation
per step
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