TS4998IQT STMicroelectronics, TS4998IQT Datasheet - Page 18

• Manufacturer Part Number: TS4998IQT
• Description: IC AMP AUDIO PWR 1W STER 16QFN
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TS4998IQT

• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 1W x 2 @ 8 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: Depop, Differential Inputs, Standby, Thermal Protection
• Mounting Type: Surface Mount
• Package / Case: 16-QFN
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 2-Channel Stereo
• Output Power (typ): 1x2@8OhmW
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.5@8Ohm@700mW%
• Single Supply Voltage (typ): 3/5V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Unity Gain Bandwidth Product (typ): 1.5MHz
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 80dB
• Single Supply Voltage (min): 2.7V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 16
• Package Type: QFN EP
• For Use With: 497-8259 - BOARD EVAL BASED ON TS4998
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6842-2

Electrical characteristics
18/33
Figure 56. Frequency response
Figure 58. Output power vs. power supply
Figure 60. Power dissipation vs. output power Figure 61. Power dissipation vs. output power
1800
1600
1400
1200
1000
14
13
12
11
10
800
600
400
200
1500
1400
1300
1200
1100
1000
9
8
7
6
5
4
3
2
1
0
900
800
700
600
500
400
300
200
100
0
20
2.5
0
0
F = 1kHz
Cb = 1
BW < 125 kHz
Tamb = 25
200
voltage
Cin=4.7
μ
3.0
Cin=680nF, Rin=12k
Cin=4.7
Cin=330nF, Rin=24k
F
100
°
C
400
μ
μ
F, Rin=12k
F, Rin=24k
3.5
Output Power (mW)
Frequency (Hz)
600
RL=16
RL=4
Vcc (V)
800
4.0
Ω
Ω
Ω
Ω
Ω
1000
Ω
RL=8
1000 1200 1400 1600
Ω
4.5
Vcc = 2.7V
Po = 200mW
ZL = 8
Tamb = 25
Vcc = 5V
F = 1kHz
THD+N < 1%
RL=8
RL=4
RL=16
Ω
5.0
+ 500pF
10000
Ω
Ω
RL=32
°
C
Ω
Ω
20k
5.5
Figure 57. Output power vs. load resistance
Figure 59. Output power vs. power supply
2200
2000
1800
1600
1400
1200
1000
1800
1600
1400
1200
1000
800
600
400
200
800
600
400
200
600
550
500
450
400
350
300
250
200
150
100
50
0
0
2.5
0
4
0
Vcc=2.7V
F = 1kHz
Cb = 1
BW < 125 kHz
Tamb = 25
100
voltage
Vcc=5.5V
8
μ
3.0
F
Vcc=5V
°
C
200
12
Vcc=4.5V
3.5
Output Power (mW)
Load Resistance (
300
Vcc=4V
RL=16
16
Vcc (V)
RL=4
4.0
400
Ω
Vcc=3.3V
Ω
20
RL=8
4.5
Ω
500
)
RL=8
Ω
Vcc=3V
24
Vcc = 3.3V
F = 1kHz
THD+N < 1%
RL=4
THD+N = 1%
F = 1kHz
Cb = 1
BW < 125kHz
Tamb = 25
RL=16
Ω
600
5.0
Ω
RL=32
28
TS4998
μ
Ω
F
700
Ω
°
C
5.5
32