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零件编号 | TS4985 | ||
描述 | 2x1.2w Stereo Audio Power Amplifier | ||
制造商 | STMicroelectronics | ||
LOGO | |||
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TS4985
2 X 1.2W Stereo Audio Power Amplifier with
Dedicated Standby Pins
■ Operating from VCC=2.2V to 5.5V
■ 1.2W output power per channel @ VCC=5V,
THD+N=1%, RL=8Ω
■ 10nA standby current
■ 62dB PSRR @ 217Hz with grounded inputs
■ High SNR: 106dB(A) typ.
■ Near zero pop & click
■ Lead-free 15 bumps, flip-chip package
Description
The TS4985 has been designed for top-class
stereo audio applications. Thanks to its compact
and power-dissipation efficient flip-chip package,
it suits various applications.
With a BTL configuration, this audio power
amplifier is capable of delivering 1.2W per
channel of continuous RMS output power into an
8Ω load @ 5V.
Each output channel (left and right), has an
external controlled standby mode pin (STDBYL &
STDBYR) to reduce the supply current to less
than 10nA per channel. The device also features
an internal thermal shutdown protection.
The gain of each channel can be configured by
external gain setting resistors.
Flip-chip - 15 bumps
Pin Connection (top view)
VCC1
VO-L
IN-L
VCC2
VO+L
IN+L
STDBYL
BYPASS
STDBYR
IN+R
VO+R
GND2
IN-R
VO-R
GND1
Applications
■ Cellular mobile phones
■ Notebook & PDA computers
■ LCD monitors & TVs
■ Portable audio devices
Order Codes
Part Number
TS4985EIJT
TS4985EKIJT
Temperature Range
-40, +85°C
Package
Lead free flip-chip
Lead free flip-chip +
back coating
Packaging
Tape & Reel
Marking
A85
May 2005
Rev 2
1/29
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29
Electrical Characteristics
Figure 2. Open loop frequency response
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Figure 3. Open loop frequency response
60
Gain
40
20 Phase
0
-20
-40 Vcc = 2.6V
RL = 8Ω
Tamb = 25°C
-60
0.1
1
10 100
Frequency (kHz)
1000
0
-40
-80
-120
-160
-200
10000
60
Gain
40
20 Phase
0
-20
-40 Vcc = 3.3V
RL = 8Ω
Tamb = 25°C
-60
0.1
1
10 100
Frequency (kHz)
1000
0
-40
-80
-120
-160
-200
10000
Figure 4. Open loop frequency response
Figure 5. Open loop frequency response
60
40
20 Phase
Gain
0
-20
-40
Vcc = 5V
RL = 8Ω
Tamb = 25°C
-60
0.1
1
10 100
Frequency (kHz)
1000
0
-40
-80
-120
-160
-200
10000
100
80 Gain
60
40
Phase
20
0
Vcc = 2.6V
-20 CL = 560pF
Tamb = 25°C
-40
0.1
1
10 100
Frequency (kHz)
1000
0
-40
-80
-120
-160
-200
10000
Figure 6. Open loop frequency response
Figure 7. Open loop frequency response
100
80 Gain
60
40
Phase
20
0
Vcc = 3.3V
-20 CL = 560pF
Tamb = 25°C
-40
0.1
1
10 100
Frequency (kHz)
1000
0
-40
-80
-120
-160
-200
10000
100
80 Gain
60
40
Phase
20
0
Vcc = 5V
-20 CL = 560pF
Tamb = 25°C
-40
0.1
1
10 100
Frequency (kHz)
1000
0
-40
-80
-120
-160
-200
10000
8/29
Electrical Characteristics
Figure 50. THD + N vs. frequency
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Figure 51. THD + N vs. frequency
Figure 52. THD + N vs. frequency
Figure 53. Crosstalk vs. frequency
Figure 54. Crosstalk vs. frequency
Figure 55. Crosstalk vs. frequency
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页数 | 29 页 | ||
下载 | [ TS4985.PDF 数据手册 ] |
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