TS421IST STMicroelectronics, TS421IST Datasheet - Page 17

• Manufacturer Part Number: TS421IST
• Description: IC AMP AUDIO PWR .367W AB 8MSOP
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TS421IST

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 367mW x 1 @ 16 Ohm
• Voltage - Supply: 2 V ~ 5.5 V
• Features: Differential Inputs, Short-Circuit Protection, Standby
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-4449-2

Fig. 47: Signal to Noise Ratio vs Power Supply
Voltage with Unweighted Filter (20Hz to 20kHz)
Fig. 49: Noise Floor
Fig. 51: PSRR vs Input Capacitor
-10
-20
-30
-40
-50
-60
-70
100
30
20
10
0
95
90
85
80
75
70
0
20
2.0
Av = 2
Cb = 1 F
THD+N < 0.5%
Tamb = 25 C
100
Cin = 1 F, 220nF
2.5
Cin = 100nF
100
Standby=ON
Power Supply Voltage (V)
Standby=OFF
3.0
1000
Frequency (Hz)
Frequency (Hz)
RL=16
RL=32
3.5
1000
Vripple = 200mVpp
Av = 2, Vcc = 5V
Input = grounded
Cb = 1 F, Rin = 20k
RL >= 16
Tamb = 25 C
10000
RL=8
4.0
RL>=16
Vcc=5V
Av=2
Cb = 1 F
Input Grounded
Bw < 125kHz
Tamb=25 C
4.5
10000
100000
20k
5.0
Fig. 48: Signal to Noise Ratio vs Power Supply
Voltage with Weighted Filter Type A
Fig. 50: Noise Floor
Fig. 52: PSRR vs Power Supply Voltage
-10
-20
-30
-40
-50
-60
-70
-80
105
100
30
20
10
0
95
90
85
80
0
20
2.0
Vripple = 100mVrms
Rfeed = 20k
Input = floating
Cb = 1 F
RL >= 16
Tamb = 25 C
Av = 2
Cb = 1 F
THD+N < 0.5%
Tamb = 25 C
100
Vcc = 5V, 3.3V & 2.5V
2.5
100
Standby=ON
Power Supply Voltage (V)
Standby=OFF
3.0
1000
Frequency (Hz)
Frequency (Hz)
RL=16
RL=32
3.5
1000
Vcc = 2V
10000
4.0
RL=8
TS419-TS421
RL>=16
Vcc=2V
Av=2
Cb = 1 F
Input Grounded
Bw < 125kHz
Tamb=25 C
4.5
10000
100000
20k
5.0
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