TS4990IST STMicroelectronics, TS4990IST Datasheet - Page 17

• Manufacturer Part Number: TS4990IST
• Description: IC AMP AUDIO PWR 1.2W MONO 8MSOP
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TS4990IST

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 1.2W x 1 @ 8 Ohm
• Voltage - Supply: 2.2 V ~ 5.5 V
• Features: Depop, Differential Inputs, Standby, Thermal Protection
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• For Use With: 497-6383 - BOARD DEMO FOR TS4990
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-4451-2

TS4990
Figure 56. Signal to noise ratio vs. power
Figure 58. Signal to noise ratio vs. power
110
105
100
100
95
90
85
80
95
90
85
80
75
70
Av = 2
Cb = 1 μ F
THD+N < 0.7%
Tamb = 25 ° C
Av = 10
Cb = 1 μ F
THD+N < 0.7%
Tamb = 25 ° C
2.5
2.5
supply with a weighted filter
supply with a weighted filter
RL=16 Ω
RL=16 Ω
3.0
3.0
Power Supply Voltage (V)
Power Supply Voltage (V)
RL=4 Ω
RL=4 Ω
3.5
3.5
4.0
4.0
RL=8 Ω
RL=8 Ω
4.5
4.5
5.0
5.0
Figure 57. Output noise voltage
Figure 59. Output noise voltage device in
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
45
40
35
30
25
20
15
10
2
2
Vcc=2.2V to 5.5V
Cb=1 μ F
RL=8 Ω
Tamb=25 ° C
Vcc=2.2V to 5.5V
Cb=1 μ F
RL=8 Ω
Tamb=25 ° C
Unweighted Filter
device ON
Standby
4
4
Unweighted Filter
Closed Loop Gain
Closed Loop Gain
Electrical characteristics
6
6
A Weighted Filter
A Weighted Filter
8
8
10
10
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