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TDA7335 数据表(PDF) 6 Page - STMicroelectronics

部件名 TDA7335
功能描述  STEREO PREAMP AMS DOLBY B* NOISE REDUCTION PROCESSOR
PDF  20 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7335 数据表(HTML) 6 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS (VS = 8.5V; f= 1KHz;Rg =600
Ω;Tamb =25°C; R11 =43kΩ;
all level referenced
to -6dBm/400Hz, at Dout with NR SW OFF; unless otherwise specified
see application circuit of Fig. 1) NAB METAL position.
SUPPLY
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VS
Supply Voltage
8
8.5
10.5
V
IS
Supply Current
11
18
26
mA
Vref
Reference Voltage (pin 17)
4
4.3
4.6
V
VDC
DC Voltage pin 14 (R11 = 43K)
1.15
1.25
1.35
V
SVR
Ripple Rejection
(Input referred)
Vripple = 0.3Vrms
Dolby OFF
fripple = 1KHz
Dolby ON
80
85
90
95
dB
dB
MUTEth
Mute Threshold Pin11
ON
OFF
0
2.0
0.8
VS
V
V
IMUTE
Mute Current
10
20
µA
MUTEA
Mute Attenuation
55
65
dB
PREAMPLIFIER
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
RI
Input Resistance
(pin 2, 3, 28, 29)
30
50
70
K
Ω
II
Input Bias Current
10
µA
GV
Closed Loop Gain
pin 4, 5 and 26, 27 shorted
32.5
35.5
38.5
dB
∆GV
Closed Loop Gain Match
-1
1
dB
RM
Resistance Metal Position
4.35
5.8
7.25
K
Ω
∆RM
Metal Resistance Matching
-2
0
2
dB
RN
Resistance Normal Position
50
160
300
Ω
eN
Total Input Noise
Unw. B = 20Hz to20KHz; Rg =0
Ω
Rg =600
Ω
A weighted; Rg =600
Ω
0.45
0.8
0.5
µV
µV
µV
RO
Output Impedance (pin 6, 25)
0.9
1.2
1.7
K
Ω
F/Rl
Reverse Low Level (pin 15)
IN2 = ON; IN1 = OFF
0
0.8
V
F/Rh
Forward High Level (pin 15)
IN2 = OFF; IN1 =ON
2
VS
V
EQl
Normal Low Level (pin 30)
0
1.5
V
EQh
Metal High Level (pin 30)
3.5
VS
V
AUDIO MUSIC SENSOR
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
IAMSOUT
AMS Output Current
5
mA
VAMSOUT
AMS Output Low Level
IAMOUT = 2mA
200
800
mV
RP21
Input Impedance
0.8
1.1
1.4
K
Ω
AMSswl
AMS OFF Low Level
0
0.8
V
AMSswh
AMS ON High Level
2
VS
V
VTH1
Interprogram Threshold Voltage
(pin 9)
1.2
1.45
1.7
V
VTH2
Interspace Threshold Voltage
(pin 10)
4
4.3
4.6
V
AMSth
AMS Threshold Level
see note (3)
0.6
1
1.4
V
IAMSsw
AMS Switch pin Current
5
10
15
µA
DOLBY SECTION
Symbol
Parameter
Test Condition
DOLBY
Min.
Typ.
Max.
Unit
GV
Voltage Gain
f = 1KHz;
OFF
-1
0
1
dB
∆GV
Gain Matching
OFF
-0.5
0.5
dB
RDI
Dolby Input Res.
(pin 7, 24)
46
63
K
Ω
TDA7335
6/20



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