TS487IQT STMicroelectronics, TS487IQT Datasheet - Page 22

• Manufacturer Part Number: TS487IQT
• Description: IC AMP AUDIO PWR .108W STER 8DFN
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TS487IQT

• Output Type: Headphones, 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 108mW x 2 @ 16 Ohm
• Voltage - Supply: 2 V ~ 5.5 V
• Features: Depop, Short-Circuit Protection, Standby
• Mounting Type: Surface Mount
• Package / Case: 8-DFN
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 2-Channel Stereo
• Output Power (typ): 0.108x2@16OhmW
• Audio Amplifier Function: Headphone
• Input Offset Voltage: 1(Typ)@5VmV
• Input Bias Current: 200nA
• Total Harmonic Distortion: 0.3@16Ohm@90mW%
• Single Supply Voltage (typ): 3/5V
• Dual Supply Voltage (typ): Not RequiredV
• Supply Current (max): 2.5@5VmA
• Power Supply Requirement: Single
• Power Dissipation: 1.79W
• Unity Gain Bandwidth Product (typ): 1.1MHz
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 58dB
• Single Supply Voltage (min): 2V
• 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: 8
• Package Type: DFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TS486-TS487
Fig. 75: PSRR vs Power Supply Voltage
Fig. 77: PSRR vs Input Capacitor
Fig. 79: PSRR vs Output Capacitor
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-10
-20
-30
-40
-50
-60
-70
-10
-20
-30
-40
-50
-60
-70
-10
-20
-30
-40
-50
-60
-70
0
0
0
Vcc = 5V, 3.3V & 2.5V
100
100
100
Cout = 470 F
Cin = 1 F, 220nF
Cout = 100 F
Cin = 100nF
Vripple = 200mVpp
Av = -2
Input = grounded
Cb = 1 F
RL >= 16
Tamb = 25 C
1000
1000
1000
Frequency (Hz)
Frequency (Hz)
Frequency (Hz)
Vripple = 200mVpp
Av = -2, Vcc = 5V
Input = grounded
Cb = 1 F, Rin = 20k
RL >= 16
Tamb = 25 C
Vripple = 200mVpp
Av = -2, Vcc = 5V
Input = grounded
Cb = 1 F, RL = 32
RL >= 16
Tamb = 25 C
Vcc = 2V
10000
10000
10000
100000
100000
100000
Fig. 76: PSRR vs Bypass Capacitor
Fig. 78: PSRR vs Output Capacitor
Fig. 80: THD + N vs Output Power
-10
-20
-30
-40
-50
-60
-70
-10
-20
-30
-40
-50
-60
-70
0.01
0
0
0.1
10
1
1
Cb = 4.7 F
100
100
RL = 16
F = 20Hz
Av = -4
Cb = 1 F
BW < 22kHz
Tamb = 25 C
Cout = 470 F
Cout = 220 F
Vripple = 200mVpp
Av = -2
Input = grounded
Vcc = 5V
RL >= 16
Tamb = 25 C
Vcc=2.5V
Vcc=2V
1000
1000
Frequency (Hz)
Frequency (Hz)
Output Power (mW)
Cb = 2.2 F
Cb = 1 F
Vcc=3.3V
10
Vripple = 200mVpp
Av = -2, Vcc = 5V
Input = grounded
Cb = 1 F, RL = 16
RL >= 16
Tamb = 25 C
10000
10000
Vcc=5V
100
100000
100000