TDA7335 Datasheet, PDF (6/20 Pages) STMicroelectronics – STEREO PREAMP AMS DOLBY B* NOISE REDUCTION PROCESSOR

TDA7335
ELECTRICAL CHARACTERISTICS (VS = 8.5V; f = 1KHz; R_g = 600Ω; T_amb = 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
VS
IS
Vref
VDC
SVR
MUTEth
Parameter
Supply Voltage
Supply Current
Reference Voltage (pin 17)
DC Voltage pin 14 (R11 = 43K)
Ripple Rejection
(Input referred)
Mute Threshold Pin11
IMUTE
Mute Current
MUTEA Mute Attenuation
PREAMPLIFIER
Test Condition
V_ripple = 0.3Vrms
f_ripple = 1KHz
ON
OFF
Dolby OFF
Dolby ON
Min.
8
11
4
1.15
80
85
0
2.0
55
Typ. Max. Unit
8.5 10.5
V
18
26
mA
4.3
4.6
V
1.25 1.35
V
90
dB
95
dB
0.8
V
VS
V
10
20
µA
65
dB
Symbol
RI
II
GV
∆GV
RM
∆RM
RN
eN
Parameter
Input Resistance
Input Bias Current
Closed Loop Gain
Closed Loop Gain Match
Resistance Metal Position
Metal Resistance Matching
Resistance Normal Position
Total Input Noise
RO
Output Impedance (pin 6, 25)
F/Rl
Reverse Low Level (pin 15)
F/Rh
Forward High Level (pin 15)
EQl
Normal Low Level (pin 30)
EQh
Metal High Level (pin 30)
AUDIO MUSIC SENSOR
Test Condition
(pin 2, 3, 28, 29)
pin 4, 5 and 26, 27 shorted
Unw. B = 20Hz to20KHz; Rg = 0Ω
Rg = 600Ω
A weighted; Rg =600Ω
IN2 = ON; IN1 = OFF
IN2 = OFF; IN1 = ON
Min. Typ. Max. Unit
30
50
70
KΩ
10
µA
32.5 35.5 38.5 dB
-1
1
dB
4.35 5.8 7.25 KΩ
-2
0
2
dB
50
160 300
Ω
0.45
µV
0.8
µV
0.5
µV
0.9
1.2
1.7
KΩ
0
0.8
V
2
VS
V
0
1.5
V
3.5
VS
V
Symbol
Parameter
IAMSOUT AMS Output Current
VAMSOUT AMS Output Low Level
R_P21
AMSswl
Input Impedance
AMS OFF Low Level
AMSswh AMS ON High Level
VTH1
Interprogram Threshold Voltage
VTH2
Interspace Threshold Voltage
AMSth AMS Threshold Level
IAMSsw AMS Switch pin Current
DOLBY SECTION
Test Condition
IAMOUT = 2mA
(pin 9)
(pin 10)
see note (3)
Min. Typ. Max. Unit
5
mA
200 800 mV
0.8
1.1
1.4
KΩ
0
0.8
V
2
V_S
V
1.2 1.45 1.7
V
4
4.3
4.6
V
0.6
1
1.4
V
5
10
15
µA
Symbol
GV
∆GV
RDI
Parameter
Voltage Gain
Gain Matching
Dolby Input Res.
Test Condition
f = 1KHz;
(pin 7, 24)
DOLBY Min. Typ. Max. Unit
OFF -1
0
1
dB
OFF -0.5
0.5 dB
46
63
KΩ
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