參數(shù)資料
型號(hào): SAA7712
廠商: NXP Semiconductors N.V.
英文描述: Sound effects DSP
中文描述: DSP的音效
文件頁(yè)數(shù): 33/44頁(yè)
文件大小: 178K
代理商: SAA7712
1999 Aug 05
33
Philips Semiconductors
Preliminary specification
Sound effects DSP
SAA7712H
14 OSCILLATOR CHARACTERISTICS
Note
1.
C
p
is the parasitic parallel capacitance of the crystal.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
f
xtal
f
xtal(adj)
crystal frequency
crystal frequency variation with
adjustment
crystal frequency variation with
temperature
spurious frequency attenuation
voltage across the crystal
(absolute peak value)
transconductance at start-up
transconductance when operating
capacitive load of clock output
number of cycles during start-up
10.000
30
19.456
+30
MHz
ppm
T
amb
= 25
°
C
f
xtal(T)
30
+30
ppm
α
f
V
xtal(M)
20
1.6
2.6
3.6
dB
V
g
m(start)
g
m(oper)
C
L
N
cy(start)
10.5
3.6
19
15
1000
32
38
mS
mS
pF
cycles
depends on quality of the
external crystal
at start-up
at oscillation
in slave mode
at oscillation
in slave mode
C
p
= 5 pF
(1)
; C1 = 10 pF;
C2 = 10 pF; see Fig.9
at start-up;
f
xtal
= 18.432 MHz;
V
DD_OSC
= 3.3 V
I
xtal
supply current
3
7
0.6
0.65
0.4
3.3
20
15
2
0.9
0.5
3.6
100
mA
mA
mA
mW
V
P
xtal
V
i(clk)
R
xtal
drive level
external clock input voltage
allowed loss resistance of the
crystal
output resistance
R
o
750
1300
2800
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