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PDF TS482 Data sheet ( Hoja de datos )
| Número de pieza | TS482 | |
| Descripción | 100mW STEREO HEADPHONE AMPLIFIER | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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TS482
100mW STEREO HEADPHONE AMPLIFIER
s Operating from Vcc=2V to 5.5V
s 100mW into 16Ω at 5V
s 38mW into 16Ω at 3.3V
s 11.5mW into 16Ω at 2V
s Switch ON/OFF click reduction circuitry
s High Power Supply Rejection Ratio: 85dB at
5V
s High Signal-to-Noise ratio: 110dB(A) at 5V
s High Crosstalk immunity: 100dB (F=1kHz)
s Rail to Rail input and output
s Unity-Gain Stable
s Available in SO8, MiniSO8 & DFN8
DESCRIPTION
The TS482 is a dual audio power amplifier able to
drive a 16 or 32Ω stereo headset down to low volt-
ages.
PIN CONNECTIONS (top view)
TS482ID, TS482IDT - SO8
OUT (1)
VIN- (1)
VIN+ (1)
GND
1
2
3
4
8 VCC
7 OUT (2)
6 VIN- (2)
5 VIN+ (2)
TS482IST - MiniSO8
OUT (1)
VIN- (1)
VIN+ (1)
GND
1
2
3
4
8 VCC
7 OUT (2)
6 VIN- (2)
5 VIN+ (2)
It’s delivering up to 100mW per channel (into 16Ω
loads) of continuous average power with 0.1%
THD+N from a 5V power supply.
The unity gain stable TS482 can be configured by
external gain-setting resistors.
TS482IQT - DFN8
OUT (1) 1
VIN - (1) 2
VIN + (1) 3
GND 4
8 Vcc
7 OUT (2)
6 VIN - (2)
5 VIN + (2)
APPLICATIONS
s Stereo Headphone Amplifier
s Optical Storage
s Computer Motherboard
s PDA, organizers & Notebook computers
s High end TV, Set Top Box, DVD Players
s Sound Cards
ORDER CODE
Part Number
Temperature
Range
Package
DSQ
TS482ID/DT
TS482IST
TS482IQT
-40, +85°C
•
•
•
Marking
482I
MiniSO & DFN only available in Tape & Reel with T suffix,
SO is available in Tube (D) and in Tape & Reel (DT))
June 2003
TYPICAL APPLICATION SCHEMATIC
Rfeed1
1µF Vcc 3.9k
+ RpolVcc
Right In Cin1
Cs
3.9k
+
100k
8
2-
1
2.2µF
Rin1
3
Cb
+
2.2µF Rin21µF
5
6
+
TS482
+7
-
+
Left In Cin2 3.9k
4
100k
Rpol
3.9k
220µF RL=32Ohms
+
Cout1
Cout2 RL=32Ohms
+
220µF
Rfeed2
1/24
1 page  
TS482
ELECTRICAL CHARACTERISTICS
VCC = +2.5V, GND = 0V, Tamb = 25°C (unless otherwise specified) 2)
Symbol
Parameter
Min.
ICC
Supply Current
No input signal, no load
VIO Input Offset Voltage (VICM = VCC/2)
IIB Input Bias Current (VICM = VCC/2)
Output Power
THD+N = 0.1% Max, F = 1kHz, RL = 32Ω
PO THD+N = 1% Max, F = 1kHz, RL = 32Ω
THD+N = 0.1% Max, F = 1kHz, RL = 16Ω
THD+N = 1% Max, F = 1kHz, RL = 16Ω
THD + N
Total Harmonic Distortion + Noise (Av=-1) 1)
RL = 32Ω, Pout = 10mW, 20Hz ≤ F ≤ 20kHz
RL = 16Ω, Pout = 16mW, 20Hz ≤ F ≤ 20kHz
PSRR
Power Supply Rejection Ratio (Av=1), inputs floating
F = 100Hz, Vripple = 100mVpp
IO
Max Output Current
THD +N < 1%, RL = 16Ω connected between out and VCC/2
Output Swing
VOL : RL = 32Ω
VO VOH : RL = 32Ω
VOL : RL = 16Ω
VOH : RL = 16Ω
SNR
Signal-to-Noise Ratio (Filter Type A, Av=-1)
(RL = 32Ω, THD +N < 0.2%, 20Hz ≤ F ≤ 20kHz)
Crosstalk
Channel Separation, RL = 32Ω
F = 1kHz
F = 20Hz to 20kHz
Channel Separation, RL = 16Ω
F = 1kHz
F = 20Hz to 20kHz
CI Input Capacitance
GBP Gain Bandwidth Product (RL = 32Ω)
SR Slew Rate, Unity Gain Inverting (RL = 16Ω)
1. Fig. 68 to 79 show dispersion of these parameters.
12.5
17.5
45
2.14
1.97
89
1.2
0.45
2. All electrical values are guaranted with correlation measurements at 2V and 5V
Typ. Max.
5.1 7.2
15
200 500
13.5
14.5
20.5
22
0.03
0.03
75
56
0.25 0.325
2.25
0.35 0.45
2.15
102
100
80
100
80
1
2
0.7
Unit
mA
mV
nA
mW
%
dB
mA
V
dB
dB
pF
MHz
V/µs
5/24
5 Page 
Fig. 19 : Phase Margin vs Power Supply
Voltage
70
60
50
40 CL=0pF CL=300pF
CL=500pF
30
20
10 RL=5kΩ
Tamb=25°C
0
2.0 2.5
3.0 3.5 4.0
Power Supply Voltage (V)
4.5
5.0
Fig. 21 : Output Power vs Power Supply
Voltage
250
225
Av = -1
RL = 8Ω
200 F = 1kHz
175
BW < 125kHz
Tamb = 25°C
150
THD+N=1%
THD+N=10%
125
100
75
50 THD+N=0.1%
25
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0
Vcc (V)
5.5
Fig. 23 :Output Power vs Power Supply
Voltage
Av = -1
100 RL = 32Ω
F = 1kHz
BW < 125kHz
Tamb = 25°C
75
THD+N=1%
THD+N=10%
50
25 THD+N=0.1%
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Vcc (V)
TS482
Fig. 20 : Gain Margin vs Power Supply Voltage
20
CL=0pF
CL=100pF
CL=200pF
10
CL=500pF
RL=5kΩ
Tamb=25°C
0
2.0 2.5
3.0 3.5 4.0 4.5
Power Supply Voltage (V)
5.0
Fig. 22 : Output Power vs Power Supply
Voltage
200
Av = -1
175 RL = 16Ω
F = 1kHz
150 BW < 125kHz
Tamb = 25°C
125
100
THD+N=1%
THD+N=10%
75
50
THD+N=0.1%
25
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Vcc (V)
Fig. 24 : Output Power vs Load Resistance
200
180
160
140
120
100
80
60
40
20
0
8
THD+N=1%
Av = -1
Vcc = 5V
F = 1kHz
BW < 125kHz
Tamb = 25°C
THD+N=10%
THD+N=0.1%
16 24 32 40 48 56 64
Load Resistance ( )
11/24
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet TS482.PDF ] | |
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