參數(shù)資料
型號(hào)： SAA7377
廠商： NXP Semiconductors N.V.
英文描述： Digital servo processor and Compact Disc decoder CD7
中文描述： 數(shù)字伺服處理器和CD7抗原光盤(pán)解碼器
文件頁(yè)數(shù)： 45/56頁(yè)
文件大?。?/td> 311K
代理商： SAA7377
1998 Jul 06
45
Philips Semiconductors
Product specifications
Digital servo processor and Compact Disc
decoder (CD7)
SAA7377
Notes
1.
2.
Highest clock frequency at which data slicer produces 1010 output in analog self-test mode.
V
RL
= 0 V, f
sys
= 4.2336 MHz. The maximum input current depends on the value of the external resistor connected
to I
refT
:
a) For D1 to D4: I
max
= 2.4/R
IrefT
2.4/220 k
= 10.9
μ
A
b) For R1 and R2: I
max
= 1.2/R
IrefT
1.2/20 k
= 5.45
μ
A
Internal reference source with 32 different output voltages. Selection is achieved during a calibration period or via
the serial interface. The values given are for an unloaded V
RH
.
V
RH
= 2.5 V and V
RL
= 0 V, measuring bandwidth: 200 Hz to 20 kHz, f
i(ADC)
= 1 kHz.
f
ripple
= 1 kHz, V
ripple
= 0.5 V (p-p).
Gain of the ADC is defined as G
ADC
= f
sys
/I
max
(counts/
μ
A); thus digital output = I
i
×
G
ADC
where;
a) Digital output = the number of pulses at the digital output in counts/s and I
i
= the DC input current in
μ
A.
b) The maximum input current depends on the system frequency (f
sys
= 4.2336 MHz) and on V
RH
V
RL
.
c) The gain tolerance is the deviation from the calculated gain regarding note 2.
It is recommended that the series resistance of the crystal or ceramic resonator is
≤
60
.
3.
4.
5.
6.
7.
Digital input/output
I
NPUT
/
OUTPUT
: SDA [CMOS
INPUT
/
OPEN
-
DRAIN
I
2
C-
BUS OUTPUT
(
WITH PROTECTION DIODE TO
V
DDD
)]
V
IL
LOW level input voltage
V
IH
HIGH level input voltage
I
ZO
3-state leakage current
V
i
= 0
V
DDD
C
in
input capacitance
V
OL
LOW level output voltage
I
OL
= 2 mA
I
OL
LOW level output current
C
L
load capacitance
t
f
output fall time
C
L
= 20 pF;
(V
DDD
0.8)
0.8
0.3
0.7V
DDD
10
0
0.3V
DDD
V
DDD
+ 0.3
+10
10
0.4
4
50
15
V
V
μ
A
pF
V
mA
pF
ns
Crystal oscillator
I
NPUT
: CRIN (
EXTERNAL CLOCK
)
V
IL
V
IH
I
LI
C
in
O
UTPUT
: CROUT; see Figs 3 and 4
LOW level input voltage
HIGH level input voltage
input leakage current
input capacitance
0.3
0.7V
DD
10
0.3V
DD
V
DD
+ 0.3
+10
10
V
V
μ
A
pF
f
xtal
g
m
crystal frequency
mutual conductance at
100 kHz
small signal voltage gain
feedback capacitance
output capacitance
note 7
8
8.4672
10
35
MHz
mA/V
G
v
C
fb
C
out
G
v
= g
m
×
R
O
18
5
10
V/V
pF
pF
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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