參數(shù)資料
型號： QS7779
文件頁數(shù)： 4/7頁
文件大小： 574K
代理商： QS7779
Ref: QS7779R12.DOC
Rev: 1.02
QS7779 Data Sheet -- Preliminary
QSound Labs, Inc.
Date: 03/02/01
Page 4 of 7
QS7779CM/QS7779PM
QSurround Matrix Surround Decoder/Virtualizer
Device Specifications - Preliminary Information
Electrical Specification:
Absolute Maximum Ratings
Parameter
Symbol
V
ANA
V
DIG
V
IANA
V
IDIG
P
D
Tstg
T
SLD
t
SLD
Rating
Unit
V
V
V
V
mW
°
C
°
C
Sec
Supply voltage range (analog)
Supply voltage range (digital)
Input voltage range (analog)
Input voltage range (digital)
Power dissipation
Storage temperature range
Soldering temperature
Soldering time
-0.3 to 15, and V
ANA
>V
DIG
-0.3
-0.3 to 7
-0.3 to V
ANA
+0.3
-0.3 to V
DIG
+0.3
-40 to 125
255
10
Recommended Operating Condition
Parameter
Operating voltage (analog)
Operating voltage (digital)
Operating temperature range
Symbol
V
ANA
V
DIG
T
OPR
Limits
Unit
V
V
°
C
5 to 13 and V
ANA
≥
V
DIG
4.5 to 5.5
0 to 70
Electrical Characteristics
Parameter
Input voltage
Internal Gain
Internal Gain bypass
Analog input impedance
Reference voltage out
HIGH level input voltage
LOW level input voltage
HIGH level input current
LOW level input current
SCL width HIGH
SCL width LOW
Set-up time, SDA to SCL
Hold time, SCL to SDA
Set-up time, SCL to STRB
STRB width HIGH
Hold time, SDA to SCL
Set-up time, SCL to SDA
Hold time, SCL to SDA
Set-up time, SDA to SCL
SCL width HIGH
SCL width LOW
SCL rise time
SCL fall time
Operating current (analog)
Operating current (digital)
Standby current (analog)
Standby current (digital)
Signal to Noise Ratio
Frequency Response
Total Harmonic Distortion
(V
ANA
=9V,V
DIG
=5V TA=25
°
C unless otherwise noted)
Limits/min
Limits/typ
Symbol
V
IN
A
V
A
B
Z
AIN
V
REFOUT
V
IH
V
IL
I
IH
I
IL
t
1
t
2
t
3
t
4
t
5
t
6
t
HD;STA
t
SU;STA
t
HD;DAT
t
SU;DAT
t
HIGH
t
LOW
t
R
t
F
I
ANA
I
DIG
I
ANASAVE
I
DIGSAVE
S/N
f
THD
Condition
Limits/max
1.2
Unit
V
RMS
dB
dB
k
V
V
V
μ
A
μ
A
μ
S
μ
S
nS
μ
S
n
S
μ
S
μ
S
μ
S
μ
S
nS
μ
S
μ
S
nS
nS
mA
mA
mA
mA
dB
Hz
%
V
ANA
= 12VDC;f = 1kHz;no clipping
V
ANA
= 12VDC;f = 1kHz;spread = max
V
ANA
= 12VDC;f = 1kHz;Bypass
L
IN
IN
+8.6
-0.1
20
V
ANA
/2
2.4
0.5
V
IN
= V
ANA
V
IN
=GND
4.0
4.7
250
5.0
250
5.0
4.0
4.0
5.0
250
4.0
4.7
1000
300
10
0.3
0.1
0.035
V
ANA
= 12VDC;f = 1kHz;unweighted
V
ANA
= 12VDC;f = 1kHz;Bypass
V
ANA
= 12VDC;f = 1kHz;V
IN
= 1 V
RMS
96
20
20k
0.025
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