參數(shù)資料
型號： TDA7335
廠商： 意法半導(dǎo)體
元件分類： 音頻放大器
英文描述： STEREO PREAMP AMS DOLBY B* NOISE REDUCTION PROCESSOR
中文描述： 立體聲前置放大器醫(yī)療輔助隊杜比B *降噪處理器
文件頁數(shù)： 6/20頁
文件大?。?/td> 427K
代理商： TDA7335
ELECTRICAL CHARACTERISTICS
(V
S
= 8.5V; f = 1KHz; R
g
= 600
; T
amb
= 25
°
C; R
11
= 43k
;
all level referenced
to -6dBm/400Hz, at D
out
with NR SW OFF; unless otherwise specified
see application circuit of Fig. 1) NAB METAL position.
SUPPLY
Symbol
V
S
I
S
V
ref
V
DC
SVR
Parameter
Test Condition
Min.
8
11
4
1.15
80
85
0
2.0
Typ.
8.5
18
4.3
1.25
90
95
Max.
10.5
26
4.6
1.35
Unit
V
mA
V
V
dB
dB
V
V
μ
A
dB
Supply Voltage
Supply Current
Reference Voltage (pin 17)
DC Voltage pin 14 (R11 = 43K)
Ripple Rejection
(Input referred)
Mute Threshold Pin11
V
ripple
= 0.3Vrms
f
ripple
= 1KHz
ON
OFF
Dolby OFF
DolbyON
MUTE
th
0.8
V
S
20
I
MUTE
MUTE
A
PREAMPLIFIER
Mute Current
Mute Attenuation
10
65
55
Symbol
R
I
I
I
G
V
G
V
R
M
R
M
R
N
e
N
Parameter
Test Condition
(pin 2, 3, 28, 29)
Min.
30
Typ.
50
Max.
70
10
38.5
1
7.25
2
300
Unit
K
μ
A
dB
dB
K
dB
μ
V
μ
V
μ
V
K
V
V
V
V
Input Resistance
Input Bias Current
Closed Loop Gain
Closed Loop Gain Match
Resistance Metal Position
Metal Resistance Matching
Resistance Normal Position
Total Input Noise
pin 4, 5 and 26, 27 shorted
32.5
-1
4.35
-2
50
35.5
5.8
0
160
0.45
0.8
0.5
1.2
Unw.B=20Hz to20KHz;R
g
=0
R
g
=600
A weighted; R
g
=600
R
O
F/R
l
F/R
h
EQ
l
EQ
h
Output Impedance (pin 6, 25)
Reverse Low Level (pin 15)
Forward HighLevel (pin15)
Normal LowLevel (pin 30)
MetalHigh Level (pin30)
0.9
0
2
0
3.5
1.7
0.8
V
S
1.5
V
S
IN
2
= ON; IN
1
= OFF
IN
2
= OFF; IN
1
= ON
AUDIO MUSIC SENSOR
Symbol
IAMS
OUT
VAMS
OUT
R
P
21
AMS
swl
AMS
swh
V
TH1
VTH
2
AMS
th
IAMS
sw
DOLBY SECTION
Parameter
Test Condition
Min.
Typ.
Max.
5
800
1.4
0.8
V
S
1.7
4.6
1.4
15
Unit
mA
mV
K
V
V
V
V
V
μ
A
AMS Output Current
AMS Output Low Level
Input Impedance
AMS OFF Low Level
AMS ON High Level
Interprogram Threshold Voltage
Interspace Threshold Voltage
AMS Threshold Level
AMS Switch pin Current
IAM
OUT
= 2mA
200
1.1
0.8
0
2
1.2
4
0.6
5
(pin9)
(pin 10)
see note (3)
1.45
4.3
1
10
Symbol
G
V
G
V
RD
I
Parameter
Test Condition
f = 1KHz;
DOLBY
OFF
OFF
Min.
-1
-0.5
46
Typ.
0
Max.
1
0.5
Unit
dB
dB
K
Voltage Gain
Gain Matching
Dolby Input Res.
(pin 7, 24)
63
TDA7335
6/20
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