IC AMP AUDIO PWR .107W AB 8MSOP

TS482IST

Manufacturer Part NumberTS482IST
DescriptionIC AMP AUDIO PWR .107W AB 8MSOP
ManufacturerSTMicroelectronics
TypeClass AB
TS482IST datasheet
 


Specifications of TS482IST

Output TypeHeadphones, 2-Channel (Stereo)Max Output Power X Channels @ Load107mW x 2 @ 16 Ohm
Voltage - Supply2 V ~ 5.5 VFeaturesDepop
Mounting TypeSurface MountPackage / Case8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther names497-8110-2
TS482IST
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Operating from Vcc=2V to 5.5V
100mW into 16 at 5V
38mW into 16 at 3.3V
11.5mW into 16 at 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 32
stereo 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.
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
Order Codes
Part Number
Temperature Range
TS482ID/IDT
TS482IST
TS482IQT
November 2005
100mW Stereo Headphone Amplifier
Right In
Right In
Left In
Left In
Package
SO-8
-40, +85°C
miniSO-8
DFN8
TS482
TS482ID, TS482IDT - SO-8
1
8
V
O
UT (1)
CC
2
7
O
V
UT (2)
IN- (1)
3
6
V
V
IN- (2)
IN+ (1)
4
5
G
V
ND
IN+ (2)
TS482IST - MiniSO-8
1
8
V
O
CC
UT (1)
2
7
O
V
UT (2)
IN- (1)
3
6
V
V
IN- (2)
IN+ (1)
5
4
G
V
ND
IN+ (2)
TS482IQT - DFN8
1
1
8
8
OUT
OUT
Vcc
Vcc
(1)
(1)
2
2
7
7
V
V
OUT
OUT
IN - (1)
IN - (1)
(2)
(2)
3
3
V
V
6
6
V
V
IN + (1)
IN + (1)
IN - (2)
IN - (2)
4
4
GND
GND
5
5
V
V
IN + (2)
IN + (2)
Typical application schematic
Rfeed1
Rfeed1
1µF
1µF
Vcc
Vcc
3.9k
3.9k
Rpol
Rpol
+
+
Vcc
Vcc
Cs
Cs
100k
100k
Cin1
Cin1
8
8
3.9k
3.9k
220µF
220µF
2
2
RL=32Ohms
RL=32Ohms
+
+
-
-
1
1
+
+
+
+
Rin1
Rin1
3
3
+
+
2.2µF
2.2µF
Cb
Cb
Cout1
Cout1
TS482
TS482
+
+
Cout2
Cout2
5
5
RL=32Ohms
RL=32Ohms
2.2µF
2.2µF
+
+
+
+
7
7
1µF
1µF
+
+
Rin2
Rin2
6
6
-
-
+
+
220µF
220µF
3.9k
3.9k
4
4
Cin2
Cin2
100k
100k
Rpol
Rpol
3.9k
3.9k
Rfeed2
Rfeed2
Packing
Marking
Tube or Tape & Reel
482I
Tape & Reel
Rev 2
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www.st.com
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TS482IST Summary of contents

  • Page 1

    ... Part Number Temperature Range TS482ID/IDT TS482IST TS482IQT November 2005 100mW Stereo Headphone Amplifier Right In Right In Left In Left In Package SO-8 -40, +85°C miniSO-8 DFN8 TS482 TS482ID, TS482IDT - SO ( (2) IN- ( IN- (2) IN+ ( IN+ (2) TS482IST - MiniSO ( (2) IN- ( IN- (2) IN+ ( IN+ (2) TS482IQT - DFN8 OUT OUT Vcc Vcc (1) ( ...

  • Page 2

    Absolute Maximum Ratings 1 Absolute Maximum Ratings Table 1. Key parameters and their absolute maximum ratings Symbol V Supply voltage CC V Input Voltage i T Operating Free Air Temperature Range oper T Storage Temperature stg T Maximum Junction Temperature ...

  • Page 3

    TS482 2 Electrical Characteristics Table 3. Electrical characteristics when V otherwise specified) Symbol Supply Current input signal, no load V Input Offset Voltage ( Input Bias Current (V IB Output Power THD+N = 0.1% Max, ...

  • Page 4

    Electrical Characteristics Table 4. Electrical characteristics when V otherwise specified) Symbol Supply Current input signal, no load V Input Offset Voltage ( Input Bias Current (V IB Output Power THD+N = 0.1% Max ...

  • Page 5

    Electrical Characteristics Table 5. Electrical characteristics when V otherwise specified) Symbol Supply Current input signal, no load V Input Offset Voltage ( Input Bias Current (V IB Output Power THD+N = 0.1% Max ...

  • Page 6

    Electrical Characteristics Table 6. Electrical characteristics when V otherwise specified) Symbol Parameter Supply Current input signal, no load V Input Offset Voltage ( Input Bias Current (V IB Output Power THD+N = 0.1% Max, F ...

  • Page 7

    Electrical Characteristics Table 7. Components description Components Inverting input resistor which sets the closed loop gain in conjunction with Rfeed. This Rin resistor also forms a high pass filter with Cin ( Rin ...

  • Page 8

    Electrical Characteristics Table 8. Index of graphics Open loop gain and phase vs. frequency response Phase and Gain Margin vs. Power Supply Voltage Output power vs. power supply voltage Output power vs. load resistance Power dissipation vs. output power Power ...

  • Page 9

    Electrical Characteristics Figure 1. Open loop gain and phase vs. frequency response 80 Gain 60 40 Phase 20 0 -20 -40 0 100 Frequency (kHz) Figure 3. Open loop gain and phase vs. frequency response 80 Gain 60 ...

  • Page 10

    Electrical Characteristics Figure 7. Open loop gain and phase vs. frequency response 80 Gain Phase 0 -20 -40 0 100 Frequency (kHz) Figure 9. Open loop gain and phase vs. frequency response 80 Gain 60 ...

  • Page 11

    Electrical Characteristics Figure 13. Phase margin vs. power supply voltage Figure 14. Gain margin vs. power supply voltage CL 500pF 20 10 RL=16 Tamb= 2.0 2.5 3.0 3.5 Power Supply Voltage (V) Figure ...

  • Page 12

    Electrical Characteristics Figure 19. Phase margin vs. power supply voltage Figure 20. Gain margin vs. power supply voltage CL=0pF CL=300pF RL=5k Tamb= 2.0 2.5 3.0 3.5 Power Supply Voltage (V) Figure ...

  • Page 13

    Electrical Characteristics Figure 25. Output power vs. load resistance 70 THD+N= THD+N=0. Load Resistance (ohm) Figure 27. Output power vs. load resistance 25 20 THD+N= THD+N=0.1% ...

  • Page 14

    Electrical Characteristics Figure 31. Power dissipation vs. output power Figure 32. Power derating vs. ambient 25 Vcc=2V F=1kHz THD+N< RL= Output Power (mW) Figure 33. Current consumption vs. power supply ...

  • Page 15

    Electrical Characteristics Figure 37. THD + N vs. output power 20Hz < 125kHz Tamb = 25 C Vcc=2V 0.1 Vcc=2.6V 0.01 Vcc=3.3V 1E Output Power (mW) Figure ...

  • Page 16

    Electrical Characteristics Figure 43. THD + N vs. output power 600 F = 1kHz Vcc= < 125kHz Vcc=2.6V Tamb = 25 C Vcc=3.3V 0.1 Vcc=5V 0.01 1E-3 0.01 0.1 Output Voltage (Vrms) ...

  • Page 17

    Electrical Characteristics Figure 49. THD + N vs. output power Vcc= 20kHz Vcc=2.6V BW < 125kHz 1 Tamb = 25 C Vcc=3.3V Vcc=5V 0.1 0.01 0.01 0.1 Output Voltage (Vrms) Figure ...

  • Page 18

    Electrical Characteristics Figure 55. Signal to noise ratio vs. power supply with unweighted filter (20Hz to 20kHz) 110 108 THD+N < 0.2% Tamb = 25 C 106 104 102 RL=32 100 RL= ...

  • Page 19

    Electrical Characteristics Figure 61. Crosstalk vs. frequency 100 100 1000 Frequency (Hz) Figure 63. Crosstalk vs. frequency 100 80 ChB to ChA & ChA to Chb 100 1000 Frequency (Hz) Figure ...

  • Page 20

    Electrical Characteristics Figure 67. Lower cut off frequency vs. input capacitor 1000 Rin=3.9k Rin=10k 100 10 1 0.2 0.4 0.6 0.8 1.0 1.2 Input Capacitor Cin ( F) Figure 69. Best case distribution of THD + ...

  • Page 21

    Electrical Characteristics Figure 73. Worst case distribution of THD + 0.012 0.018 0.024 0.030 THD+N (%) Figure 75. Best case distribution of THD + ...

  • Page 22

    Electrical Characteristics Figure 79. Worst case distribution of THD + 0.012 0.018 0.024 0.030 THD+N (%) 22/26 Vcc=2V RL=32 Av=-1 Pout=6.5mW 20Hz F 20kHz Tamb=25 C 0.036 0.042 ...

  • Page 23

    Package Mechanical Data 3 Package Mechanical Data In order to meet environmental requirements, ST offers these devices in ECOPACK These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on ...

  • Page 24

    Package Mechanical Data 3.2 MiniSO-8 Package 24/26 TS482 ...

  • Page 25

    Package Mechanical Data 3.3 DFN8 Package 25/26 TS482 ...

  • Page 26

    ... STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. ...