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PDF TS2007 Data sheet ( Hoja de datos )
| Número de pieza | TS2007 | |
| Descripción | 3W filter-free Class D audio power amplifier | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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TS2007
3W filter-free Class D audio power amplifer with
6-12dB fixed gain select
Features
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■ Operating range from VCC=2.4V to 5.5V
■ Standby mode active low
■ Output power: 1.4W @5V or 0.45W @ 3.0V
into 8Ω with 1% THD+N max.
■ Output power: 2.3W @5V or 0.75W @ 3.0V
into 4Ω with 1% THD+N max.
■ Fixed gain select: 6dB or 12dB
■ Low current consumption
■ Efficiency: 88% typ.
■ Signal-to-noise ratio: 94dB typ.
■ PSRR: 63dB typ @ 217Hz with 6dB gain.
■ PWM base frequency: 280kHz
■ Low pop & click noise
■ Thermal shutdown protection
■ DFN8 3x3mm package
Applications
■ Cellular phone
■ PDA
■ Notebook PC
Description
The TS2007 is a class D power audio amplifier.
Able to drive up to 1.4W into an 8 Ω load at 5V, it
achieves outstanding efficiency compared to
typical class AB audio power amplifier.
This device allows to switch between two different
gains: 6 or 12dB via a logic signal on the GS pin.
A pop & click reduction circuitry provides low
on/off switch noise while allowing the device to
start within 5ms. A standby function (active low)
allows to lower the current consumption down to
10nA typ.
TS2007IQT - DFN8
TS2007IQT - DFN8
18
27
36
45
The TS2007 is available in DFN8 3x3mm lead-
free packages.
May 2007
Rev 2
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1 page  
TS2007
Typical application
Table 4. Pin descriptions
Pin number
Pin name
1 STBY
2 GS
3 IN+
4 IN-
5 OUT-
6 VCC
7 GND
8 OUT+
Pin description
Standby pin ( active low )
Gain select input
Positive differential input
Negative differential input
Positive differential output
Power supply
Ground
Negative differential output
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TS2007
Electrical characteristics
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Table 9. VCC = +2.4V, GND = 0V, Vic=1.2V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min. Typ. Max.
Unit
ICC
ICC-STBY
Voo
Po
THD + N
Efficiency
PSRR
CMRR
Gain
Zin
FPWM
SNR
tWU
tSTBY
VN
Supply current
No input signal, no load
Standby current (1)
No input signal, VSTBY = GND
Output offset voltage
Floating inputs, RL = 8Ω
Output power
THD+N = 1% Max, f = 1kHz, RL = 4Ω
THD+N = 1% Max, f = 1kHz, RL = 8Ω
THD = 10% Max, f = 1kHz, RL = 4Ω
THD = 10% Max, f = 1kHz, RL = 8Ω
Total harmonic distortion + noise
Po = 200mWRMS, G = 6dB, f = 1kHz, RL = 8Ω
Efficiency
Po = 0.38 WRMS, RL = 4Ω (with LC output filter)
Po = 0.25 WRMS, RL = 8Ω (with LC output filter)
Power supply rejection ratio with inputs grounded, Cin=1µF (2)
f = 217Hz, RL = 8Ω, Gain=6dB, Vripple = 200mVpp
f = 217Hz, RL = 8Ω, Gain=12dB, Vripple = 200mVpp
Common mode rejection ratio 20Hz < f < 20kHz
Gain value
GS = 0V
GS = VCC
Single input impedance (3)
Pulse width modulator base frequency
Signal to noise ratio (A-weighting)
Po=0.4W, RL=4Ω (with LC output filter)
Wake-up time
Standby time
Output voltage noise f = 20Hz to 20kHz, RL=4Ω
Unweighted (filterless, G=6dB)
A-weighted (filterless, G=6dB)
Unweighted (with LC output filter, G=6dB)
A-weighted (with LC output filter, G=6dB)
Unweighted (filterless, G=12dB)
A-weighted (filterless, G=12dB)
Unweighted (with LC output filter, G=12dB)
A-weighted (with LC output filter, G=12dB)
1.7 2.4
mA
10 1000 nA
25 mV
0.48
0.3 W
0.6
0.36
0.1 %
82 %
90
63 dB
60
60 dB
11.5 12 12.5
5.5 6 6.5
68 75 82
190 280 370
88
5 10
5
dB
kΩ
kHz
dB
ms
ms
70
50
66
49 μVRMS
91
65
84
64
1. Standby mode is active when VSTBY is tied to GND.
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinus signal to VCC @ f = 217Hz.
3. Independent of Gain configuration (6 or 12dB) and between IN+ or IN- and GND.
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| PDF Descargar | [ Datasheet TS2007.PDF ] | |
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