IC AMP AUDIO PWR .13W STER 8DFN

TS489IQT

Manufacturer Part NumberTS489IQT
DescriptionIC AMP AUDIO PWR .13W STER 8DFN
ManufacturerSTMicroelectronics
TypeClass AB
TS489IQT datasheet
 


Specifications of TS489IQT

Output TypeHeadphones, 2-Channel (Stereo)Max Output Power X Channels @ Load130mW x 2 @ 16 Ohm
Voltage - Supply2.2 V ~ 5.5 VFeaturesDepop, Short-Circuit Protection, Standby
Mounting TypeSurface MountPackage / Case8-DFN
For Use With497-6363 - BOARD DEMO FOR TS489Lead Free Status / RoHS StatusLead free / RoHS Compliant
Other names497-5991-2  
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Features
Pop and click noise protection circuitry
Operating range from V
CC
Standby mode active low (TS488) or high (TS489)
Output power:
– 120mW @5V, into 16Ω with 0.1% THD+N
max (1kHz)
– 55mW @3.3V, into 16Ω with 0.1% THD+N
max (1kHz)
Low current consumption: 2.7mA max @5V
Ultra low standby current consumption: 10nA
typical
High signal-to-noise ratio
High crosstalk immunity: 102dB (F = 1kHz)
PSRR: 70dB typ. (F = 1kHz), inputs grounded
@5V
Unity-gain stable
Short-circuit protection circuitry
Available in lead-free MiniSO-8 & DFN8
2mm x 2mm
Description
The TS488/9 is an enhancement of TS486/7 that
eliminates pop and click noise and reduces the
number of external passive components.
The TS488/9 is a dual audio power amplifier
capable of driving, in single-ended mode, either a
16Ω or a 32Ω stereo headset.
Capable of descending to low voltages, it delivers
up to 31mW per channel (into 16Ω loads) of
continuous average power with 0.1% THD+N in
the audio bandwidth from a 2.5V power supply.
An externally-controlled standby mode reduces
the supply current to 10nA (typ.). The unity gain
stable TS488/9 is configured by external gain-
setting resistors.
September 2006
Pop-free 120mW stereo headphone amplifier
= 2.2V to 5.5V
Applications
Headphone amplifier
Mobile phone, PDA, computer motherboard
High-end TV, portable audio player
Rev 4
TS488-TS489
TS488IST - MiniSO-8
1
1
1
8
8
8
VCC
VCC
VCC
OUT (1)
OUT (1)
OUT (1)
2
2
2
7
7
7
OUT (2)
OUT (2)
OUT (2)
VIN (1)
VIN (1)
VIN (1)
BYPASS
BYPASS
BYPASS
3
3
3
6
6
6
VIN (2)
VIN (2)
VIN (2)
5
5
5
4
4
4
GND
GND
GND
SHUTDOWN
SHUTDOWN
SHUTDOWN
TS488IQT - DFN8
Vcc
Vcc
Vcc
1
1
1 1
8 8
8
8
OUT
OUT
OUT
(2)
(2)
(2)
OUT
OUT
OUT
2
2 2
2
V
V
V
7
7
7 7
(1)
(1)
(1)
IN (2)
IN (2)
IN (2)
V
V
V
6
6 6
6
Shutdown
Shutdown
Shutdown
3 3
3
3
IN (1)
IN (1)
IN (1)
GND
GND
GND
Bypass
Bypass
Bypass
4 4
4
4
5 5
5
5
TS489IST - MiniSO-8
1
1
8
8
VCC
VCC
OUT (1)
OUT (1)
2
2
7
7
OUT (2)
OUT (2)
VIN (1)
VIN (1)
BYPASS
BYPASS
3
3
6
6
VIN (2)
VIN (2)
SHUTDOWN
SHUTDOWN
4
4
5
5
GND
GND
TS489IQT - DFN8
Vcc
Vcc
OUT
OUT
1 1
1
8
8 8
(2)
(2)
OUT
OUT
2 2
2
7 7
7
V
V
(1)
(1)
IN (2)
IN (2)
Shutdown
Shutdown
V
V
3
3 3
6
6 6
IN (1)
IN (1)
4 4
4
5 5
5
GND
GND
Bypass
Bypass
www.st.com
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TS489IQT Summary of contents

  • Page 1

    ... Bypass Bypass Bypass TS489IST - MiniSO VCC VCC OUT (1) OUT ( OUT (2) OUT (2) VIN (1) VIN (1) BYPASS BYPASS VIN (2) VIN (2) SHUTDOWN SHUTDOWN GND GND TS489IQT - DFN8 Vcc Vcc OUT OUT (2) (2) OUT OUT (1) (1) IN (2) IN (2) Shutdown Shutdown ( GND GND Bypass Bypass www.st.com ...

  • Page 2

    Contents Contents 1 Typical application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 ...

  • Page 3

    TS488-TS489 1 Typical application schematic Figure 1. Typical application for the TS488-TS489 Table 1. Application component information Component Inverting input resistor that sets the closed loop gain in conjunction with R R in1,2 This resistor also forms a high pass ...

  • Page 4

    Absolute maximum ratings and operating conditions 2 Absolute maximum ratings and operating conditions Table 2. Absolute maximum ratings Symbol V Supply voltage CC V Input voltage i T Storage temperature stg T Maximum junction temperature j Thermal resistance junction to ...

  • Page 5

    TS488-TS489 3 Electrical characteristics Table 4. Electrical characteristics at V with GND = 0V, T Symbol Parameter I Supply current CC I Standby current STBY P Output power out Total harmonic distortion THD+N + noise Power supply rejection PSRR ratio, ...

  • Page 6

    Electrical characteristics Table 5. Electrical characteristics at V with GND = 0V, T Symbol Parameter I Supply current CC I Standby current STBY P Output power out Total harmonic distortion THD+N + noise Power supply rejection PSRR ratio, inputs grounded ...

  • Page 7

    TS488-TS489 Table 6. Electrical characteristics at V with GND = 0V, T Symbol Parameter I Supply current CC I Standby current STBY P Output power out Total harmonic distortion THD+N + noise Power supply rejection PSRR ratio, inputs grounded V ...

  • Page 8

    Electrical characteristics Table 7. Index of graphics Open-loop frequency response Power derating curves Signal to noise ratio vs. power supply voltage Power dissipation vs. output power per channel Power supply rejection ratio vs. frequency Total harmonic distortion plus noise vs. ...

  • Page 9

    TS488-TS489 Figure 2. Open-loop frequency response 125 100 phase -25 -50 - Frequency (Hz) Figure 4. Open-loop frequency response 125 gain 100 phase -25 -50 -75 ...

  • Page 10

    Electrical characteristics Figure 8. Open-loop frequency response 125 gain 100 phase -25 -50 - Frequency (Hz) Figure 10. Open-loop frequency response 125 100 phase -25 -50 ...

  • Page 11

    TS488-TS489 Figure 14. Signal to noise ratio vs. power supply voltage 110 A-weighted Filter Av=-1, T =25°C 108 AMB μ Cb=1 F THD+N<0.4% 106 104 102 100 RL= Power Supply Voltage (V) Figure 16. Signal to ...

  • Page 12

    Electrical characteristics Figure 20. Power dissipation vs. output power per channel 30 Vcc=2.5V, F=1kHz, THD+N< Output Power (mW) Figure 22. Power dissipation vs. output power per channel 100 Vcc=5V, ...

  • Page 13

    TS488-TS489 Figure 26. Total harmonic distortion plus noise vs. output power 10 Ω F=1kHz =-1, T =25°C V AMB BW=20Hz-120kHz =3.3V 0 =2.5V CC 0.01 1E Output ...

  • Page 14

    Electrical characteristics Figure 32. Total harmonic distortion plus noise vs. output power 10 Ω F=1kHz =-2, T =25°C V AMB BW=20Hz-120kHz =3.3V 0 =2.5V CC 0.01 1E ...

  • Page 15

    TS488-TS489 Figure 38. Total harmonic distortion plus noise vs. output power 10 Ω F=1kHz =-4, T =25°C V AMB BW=20Hz-120kHz =3.3V CC 0.1 V =2.5V CC 0.01 1E Output ...

  • Page 16

    Electrical characteristics Figure 44. Total harmonic distortion plus noise vs. frequency 1 Ω = BW=20Hz-120kHz T =25°C AMB 0.1 Vcc=2.5V, Po=20mW Vcc=3.3V, Po=40mW Vcc=5V, Po=100mW 0.01 1E-3 20 100 Frequency (Hz) Figure 46. Total ...

  • Page 17

    TS488-TS489 Figure 50. Total harmonic distortion plus noise vs. frequency 1 Ω = BW=20Hz-120kHz T =25°C AMB 0.1 Vcc=2.5V, Po=20mW Vcc=3.3V, Po=40mW 0.01 Vcc=5V, Po=100mW 1E-3 20 100 Frequency (Hz) Figure 52. Total harmonic ...

  • Page 18

    Electrical characteristics Figure 56. Output power vs. power supply voltage 240 Ω R =16 , F=1kHz L T =25°C 200 AMB BW=20Hz-120kHz 160 120 Power Supply Voltage (V) Figure 58. Output voltage swing vs. ...

  • Page 19

    TS488-TS489 Figure 62. Current consumption vs. standby voltage 2.5 2.0 1.5 1.0 0.5 0.0 0.0 0.5 1.0 1.5 Standby Voltage (V) Figure 64. Current consumption vs. standby voltage 0.0 0.5 1.0 1.5 Standby ...

  • Page 20

    Electrical characteristics Figure 68. Crosstalk vs. frequency 0 Ω Vcc=3.3V, RL=16 Av=-1, Po=40mW -20 T =25°C AMB -40 -60 OUT2 to OUT1 -80 -100 -120 100 20 Frequency (Hz) Figure 70. Crosstalk vs. frequency 0 Ω Vcc=5V, RL=16 Av=-1, Po=100mW ...

  • Page 21

    TS488-TS489 Figure 74. Crosstalk vs. frequency 0 Ω Vcc=3.3V, RL=16 Av=-4, Po=40mW -20 T =25°C AMB -40 OUT2 to OUT1 -60 -80 -100 -120 100 20 Frequency (Hz) Figure 76. Crosstalk vs. frequency 0 Ω Vcc=5V, RL=16 Av=-4, Po=100mW -20 ...

  • Page 22

    Application information 4 Application information 4.1 Power dissipation and efficiency Hypotheses: ■ Voltage and current in the load are sinusoidal (V ■ Supply voltage is a pure DC source (V Regarding the load we have: and and The average current ...

  • Page 23

    TS488-TS489 and its value is: Note: This maximum value depends only on power supply voltage and load values. The efficiency is the ratio between the output power and the power supply: The maximum theoretical value is reached when V 4.2 ...

  • Page 24

    Application information Figure 79. Lower cut-off frequency vs. input capacitor 10k 1k 100 10 1 Note: In case F 1st order high-pass filter on the input and the 1st order high-pass filter on the output create a 2nd order high-pass ...

  • Page 25

    TS488-TS489 4.5 Gain setting In the flat frequency response region (with no effect from C is: The gain A is: V 4.6 Decoupling of the circuit Two capacitors are needed to properly bypass the TS488 (TS489), a power supply capacitor ...

  • Page 26

    Application information 4.8 Wake-up time When the standby is released to put the device ON, the bypass capacitor C immediately properly until the C 20ms (pop precaution) is called the wake-up time or t characteristics table with C ...

  • Page 27

    TS488-TS489 With the values above, the result this case, τ This value is sufficient with regard to the previous formula, thus we can state that the pop is imperceptible. Connecting the headphones Generally headphones ...

  • Page 28

    ... These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an STMicroelectronics trademark. ECOPACK specifications are available at: www.st.com. ackage 5 ...

  • Page 29

    TS488-TS489 ackage 5.2 DFN8 p DIM. MIN. 0. 0.20 D2 1.45 E2 0.75 L 0.225 D E aaa bbb ccc D QFN8 (2x2) MECHANICAL DATA mm. TYP MAX. MIN. 0.55 0.60 0.020 0.90 1.00 0.031 ...

  • Page 30

    ... Ordering information 6 Ordering information Table 8. Order codes Part number TS488IST TS488IQT TS489IST TS489IQT 30/32 Temperature range Package MiniSO-8 DFN8 -40°C to +85°C MiniSO-8 DFN8 TS488-TS489 Packing Marking K488 K88 Tape & reel K489 K89 ...

  • Page 31

    TS488-TS489 7 Revision history Table 9. Document revision history Date 2-Jan-2006 1-Feb-2006 4-Aug-2006 15-Sep-2006 Revision 1 First release corresponding to the product preview version. Removal of typical application schematic on first page (it appears in Figure 1 on page 3). ...

  • Page 32

    ... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...