Datasheet

3/14
TDA7309
Table 5. Electrical Characteristcs (Refer to the test circuit, T
amb
= 25°C, V
S
= 9V, R
L
= 10KΩ, R
G
= 50Ω,
all controls flat (G = 0), f = 1KHz unless otherwise specified.)
(*) Hedevice work until 5V but no guarantee about SVR
Symbol Parameter Test Condition Min. Typ. Max. Unit
SUPPLY
V
S
Supply Voltage 5 (*) 9 10 V
I
S
Supply Current 7 10 mA
SVR Ripple Rejection 60 85 dB
INPUT SELECTORS
R
I
Input Resistance 35 50 65 KΩ
S
in
Input Separation 80 90 dB
VOLUME CONTROL
C
RANGE
Control Range 92 dB
A
VMAX
Max. Attenuation 87 92 95 dB
A
STEP
Step resolution 0.5 1 1.5 dB
E
A
Attenuation Set Error A
V
= 0 to -24dB -1.2 1.2 dB
A
V
= -24 to -56dB -3 2 dB
E
T
Tracking Error 2dB
V
DC
DC Steps adjacent attenuation steps 0 3 mV
from 0dB to A
V max
0.5 5 mV
A
mute
Output Mute Attenuation 80 100 dB
SOFT MUTE
T
d
Delay Time C
smute
= 22nF; 0 to –20dB
Fast Mode 1 ms
Slow Mode 20 ms
AUDIO OUTPUTS
V
CLIP
Clipping Level d = 0.3% 2 2.6 Vrms
R
L
Output Load Resistance 2 KΩ
R
out
Output Impedance 100 200 300 Ω
V
DC
DC Voltage Level 3.8 V
GENERAL
e
NO
Output Noise BW = 20-20KHz, flat; output
muted
2.5 µV
all gains = 0dB 5 15 µV
A curve all gains = 0dB 3 µV
E t To t al Tra ck i n g E r r o r A
V
= 0 to –24dB
A
V
= -24 to –56dB
0
0
1
2
dB
dB
S/N Signal to Noise Ratio all gains = 0dB; V
O
= 1Vrms 95 106 dB
d Distortion 0.01 0.1 %
S
C
Channel Separation 80 100 dB
BUS INPUTS
V
IL
Input Low Voltage 1V
V
IH
Input High Voltage 3 V
I
IN
Input Current V
in
= 0.4V -5 +5 µA
V
O
Output Voltage SDA Acknowledge I
O
= 1.6mA 0.4 0.8 V