TS4974_07 STMICROELECTRONICS [STMicroelectronics], TS4974_07 Datasheet - Page 14

• Manufacturer Part Number: TS4974_07
• Description: 1W differential audio power amplifier with up/down digital volume control pins
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Electrical characteristics
14/25
Figure 32. Standby voltage vs. supply current Figure 33. Frequency response
Figure 34. Frequency response
Figure 36. Power dissipation vs. output power Figure 37. Power dissipation vs. output power
14
13
12
11
10
-1
-2
-3
-4
9
8
7
6
5
4
3
2
1
0
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.3
0.2
0.1
0.0
20
0.0
0.0
No load
Tamb = 25
Vcc = 3.3V
F = 1kHz
THD+N < 1%
Cin=330nF
Cin=4.7
Cin=4.7
Cin=330nF
Cin=330nF
Cin=4.7
100
0.5
0.1
μ
μ
°
μ
F
F
C
F
Frequency (Hz)
Output Power (W)
G=+12dB
1.0
RL=32
Vstby (V)
0.2
Vcc=2.6V
1000
Ω
G=+6dB
1.5
RL=16
Vcc = 5V, 3.3V, 2.6V
ZL = 16
Tamb = 25
0.3
Ω
G=0dB
Ω
2.0
RL=8
Vcc=5V
Vcc=3.3V
+ 500pF
°
C
10000
Ω
0.4
2.5
20k
Figure 35. Power dissipation vs. output power
14
13
12
11
10
-1
-2
-3
-4
9
8
7
6
5
4
3
2
1
0
0.20
0.18
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0.00
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
20
0.0
0.00
Vcc = 5V
F = 1kHz
THD+N < 1%
Vcc = 2.6V
F = 1kHz
THD+N < 1%
Cin=4.7
Cin=330nF
Cin=4.7
Cin=330nF
Cin=4.7
Cin=330nF
100
0.2
0.05
μ
μ
μ
F
F
F
Frequency (Hz)
RL=32
Output Power (W)
0.4
G=+12dB
0.10
Output Power (W)
RL=32
Ω
1000
0.6
Ω
0.15
RL=16
G=+6dB
Vcc = 5V, 3.3V, 2.6V
ZL = 8
Tamb = 25
RL=16
Ω
RL=8
0.8
G=0dB
0.20
Ω
RL=8
Ω
+ 500pF
Ω
°
C
Ω
10000
1.0
TS4974
0.25
20k