TS482 HEADPHONE AMPLIFIER Datasheet

TS482 Datasheet, PDF, Equivalent


Part Number

TS482

Description

100mW STEREO HEADPHONE AMPLIFIER

Manufacture

STMicroelectronics

Total Page 26 Pages
Datasheet
Download TS482 Datasheet


TS482
TS482
100mW Stereo Headphone Amplifier
Operating from Vcc=2V to 5.5V
100mW into 16at 5V
38mW into 16at 3.3V
11.5mW into 16at 2V
Switch ON/OFF click reduction circuitry
High power supply rejection ratio: 85dB at 5V
High signal-to-noise ratio: 110dB(A) at 5V
High crosstalk immunity: 100dB (F=1kHz)
Rail-to-rail input and output
Unity-gain stable
Available in SO-8, MiniSO-8 & DFN8
Description
The TS482 is a dual audio power amplifier able to
drive a 16 or 32stereo headset down to low
voltages.
It is delivering up to 100mW per channel (into 16
loads) of continuous average power with 0.1%
THD+N from a 5V power supply.
TS482ID, TS482IDT - SO-8
OUT (1)
VIN- (1)
VIN+ (1)
GND
1
2
3
4
8 VCC
7 OUT (2)
6 VIN- (2)
5 VIN+ (2)
TS482IST - MiniSO-8
OUT (1)
VIN- (1)
VIN+ (1)
GND
1
2
3
4
8 VCC
7 OUT (2)
6 VIN- (2)
5 VIN+ (2)
TS482IQT - DFN8
OUT (1) 1
VIN - (1) 2
VIN + (1) 3
GND 4
8 Vcc
7 OUT (2)
6 VIN - (2)
5 VIN + (2)
Typical application schematic
The unity gain stable TS482 can be configured by
external gain-setting resistors.
Applications
Stereo headphone amplifier
Optical storage
Computer motherboard
PDA, organizers & notebook computers
High-end TV, set-top box, DVD players
Sound cards
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
Order Codes
Part Number
Temperature Range
Package
Packing
Marking
TS482ID/IDT
TS482IST
TS482IQT
-40, +85°C
SO-8
miniSO-8
DFN8
Tube or Tape & Reel
Tape & Reel
482I
November 2005
Rev 2
1/26
www.st.com
26

TS482
Absolute Maximum Ratings
1 Absolute Maximum Ratings
TS482
2/26
Table 1. Key parameters and their absolute maximum ratings
Symbol
Parameter
Value
Unit
VCC
Vi
Toper
Tstg
Tj
Rthja
Pd
ESD
ESD
Latch-up
Supply voltage (1)
Input Voltage
Operating Free Air Temperature Range
Storage Temperature
Maximum Junction Temperature
Thermal Resistance Junction to Ambient
SO8
MiniSO8
DFN8
Power Dissipation (2)
SO-8
MiniSO-8
DFN8
Human Body Model (pin to pin)
Machine Model - 220pF - 240pF (pin to pin)
Latch-up Immunity (all pins)
Lead Temperature (soldering, 10sec)
Lead Temperature (soldering, 10sec) for lead-free
Output Short-Circuit Duration
6
-0.3 to VCC +0.3
-40 to + 85
-65 to +150
150
V
V
°C
°C
°C
175 °C/W
215
70
0.71
0.58
1.79
2
200
200
250
260
see note (3)
W
kV
V
mA
°C
°C
1. All voltages values are measured with respect to the ground pin.
2. Pd has been calculated with Tamb = 25°C, Tjunction = 150°C.
3. Attention must be paid to continuous power dissipation. Exposure of the IC to a short circuit on one or two
amplifiers simultaneously can cause excessive heating and the destruction of the device.
Table 2. Operating conditions
Symbol
Parameter
VCC
RL
CL
Vicm
Supply Voltage
Load Resistor
Load Capacitor
RL = 16 to 100
RL > 100
Common Mode Input Voltage Range
Rthja
Thermal Resistance Junction to Ambient
SO-8
MiniSO-8
DFN8(1)
1. When mounted on a 4-layer PCB.
Value
2 to 5.5
>= 16
400
100
GND to VCC
150
190
41
Unit
V
pF
V
°C/W


Features TS482 100mW Stereo Headphone Amplifier ■ Operating from Vcc=2V to 5.5V ■ 1 00mW into 16Ω at 5V ■ 38mW into 16 at 3.3V ■ 11.5mW into 16Ω at 2V ■ Switch ON/OFF click reduction circu itry ■ High power supply rejection ra tio: 85dB at 5V ■ High signal-to-nois e ratio: 110dB(A) at 5V ■ High crosst alk immunity: 100dB (F=1kHz) ■ Rail-t o-rail input and output ■ Unity-gain stable ■ Available in SO-8, MiniSO-8 & DFN8 Description The TS482 is a dual audio power amplifier able to drive a 1 6 or 32Ω stereo headset down to low v oltages. It is delivering up to 100mW p er channel (into 16Ω loads) of contin uous average power with 0.1% THD+N from a 5V power supply. TS482ID, TS482IDT - SO-8 OUT (1) VIN- (1) VIN+ (1) GND 1 2 3 4 8 VCC 7 OUT (2) 6 VIN- (2) 5 V IN+ (2) TS482IST - MiniSO-8 OUT (1) V IN- (1) VIN+ (1) GND 1 2 3 4 8 VCC 7 OUT (2) 6 VIN- (2) 5 VIN+ (2) TS482IQT - DFN8 OUT (1) 1 VIN - (1) 2 VIN + (1 ) 3 GND 4 8 Vcc 7 OUT (2) 6 VIN - (2) 5 VIN + (2) Typical app.
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