TDA7297D STMicroelectronics, TDA7297D Datasheet - Page 3

• Manufacturer Part Number: TDA7297D
• Description: IC AMP AUDIO 10W STER POWERSO20
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TDA7297D

• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 10W x 2 @ 8 Ohm
• Voltage - Supply: 6.5 V ~ 18 V
• Features: Mute, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Surface Mount
• Package / Case: PowerSO-20 Exposed Bottom Pad
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 2-Channel Stereo
• Output Power (typ): 10x2@8OhmW
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.1@8Ohm@1W%
• Single Supply Voltage (typ): 9/12/15V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Power Dissipation: 33W
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 56dB
• Single Supply Voltage (min): 6.5V
• Single Supply Voltage (max): 18V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 20
• Package Type: Power SO20
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-3968-5

Table 4. Electrical Characteristcs (V
specified)
3
STAND-BY AND MUTE FUNCTIONS
3.1 Microprocessor Application
In order to avoid annoying "Pop-Noise" during Turn-On/Off transients, it is necessary to guarantee the right St-
by and mute signals sequence.It is quite simple to obtain this function using a microprocessor (Fig. 4 and 5).
At first St-by signal (from P) goes high and the voltage across the St-by terminal (Pin 9) starts to increase ex-
ponentially. The external RC network is intended to turn-on slowly the biasing circuits of the amplifier, this to
avoid "POP" and "CLICK" on the outputs.
When this voltage reaches the St-by threshold level, the amplifier is switched-on and the external capacitors in
series to the input terminals (C1, C3) start to charge.
It's necessary to mantain the mute signal low until the capacitors are fully charged, this to avoid that the device
goes in play mode causing a loud "Pop Noise" on the speakers.
A delay of 100-200ms between St-by and mute signals is suitable for a proper operation.
Symbol
VT
VT
A
I
THD
SVR
ST-BY
V
V
MUTE
CT
P
G
T
e
MUTE
ST-BY
R
I
G
CC
OS
q
w
N
APPLICATIVE SUGGESTIONS
O
V
i
V
Supply Range
Total Quiescent Current
Output Offset Voltage
Output Power
Total Harmonic Distortion
Supply Voltage Rejection
Crosstalk
Mute Attenuation
Thermal Threshold
Closed Loop Voltage Gain
Voltage Gain Matching
Input Resistance
Mute Threshold
St-by Threshold
St-by Current
Total Output Noise Voltage
Parameter
CC
R
THD 10%
P
P
f = 100Hz to 15KHz
f = 100Hz, VR =0.5V
Vo = -30dB
A Curve
f = 20Hz to 20KHz
= 13V, R
O
O
L
=
= 1W
= 0.1W to 5W
Test Condition
L
= 8 , f = 1KHz, T
amb
Min.
6.5
8.3
2.3
0.8
40
46
60
31
25
= 25°C unless otherwise
Typ.
150
150
220
0.1
2.9
1.3
50
10
56
60
80
32
30
Max.
120
100
500
0.3
0.5
4.1
1.8
18
65
33
TDA7297D
1
Unit
mA
mV
K
dB
dB
dB
°C
dB
dB
W
%
%
V
V
V
A
V
V
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