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TS2007
3W filter free class D audio power amplifier with fixed gain
May 2011 Doc ID 13123 Rev 4 1/29
TS20073 W filter-free Class D audio power amplifer with
6-12 dB fixed gain select
Features Operating range from VCC = 2.4 V to 5.5 V Standby mode active low Output power: 1.4 W at 5 V or 0.45 W at 3.0 V
into 8 Ω with 1% THD+N max. Output power: 2.3 W at 5 V or 0.75 W at 3.0 V
into 4 Ω with 1% THD+N max. Fixed gain select: 6 dB or 12 dB Low current consumption Efficiency: 88% typ. Signal-to-noise ratio: 94 dB typ. PSRR: 63 dB typ at 217 Hz with 6 dB gain PWM base frequency: 280 kHz Low pop & click noise Thermal shutdown protection DFN8 3 x 3 mm package
Applications Cellular phones PDAs Notebook PCs
DescriptionThe TS2007 is a class D power audio amplifier.
Able to drive up to 1.4 W into an 8 Ω load at 5 V, it
achieves outstanding efficiency compared to
typical class AB audio power amplifiers.
This device allows switching between two
different gains: 6 or 12dB via a logic signal on the
GS pin. A pop & click reduction circuitry provides
low on/off switching noise while allowing the
device to start within 5 ms. A standby function
(active low) allows lowering the current
consumption down to 10 nA typ.
The TS2007 is available in DFN8 3 x 3 mm lead-
free packages.
Contents TS20072/29 Doc ID 13123 Rev 4
Contents Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 3 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.1 Electrical characteristic tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Electrical characteristic curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224.1 Differential configuration principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2 Gain settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.3 Common-mode feedback loop limitations . . . . . . . . . . . . . . . . . . . . . . . . 22
4.4 Low frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.5 Decoupling of the circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.6 Wake-up time (twu) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.7 Shutdown time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.8 Consumption in shutdown mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.9 Single-ended input configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
4.10 Output filter considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
TS2007 Absolute maximum ratings and operating conditions
Doc ID 13123 Rev 4 3/29 Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings All voltage values are measured with respect to the ground pin. The magnitude of the input signal must never exceed VCC + 0.3 V / GND - 0.3 V. The device is protected in case of over temperature by a thermal shutdown active @ 150 °C. Exceeding the power derating curves during a long period will cause abnormal operation.
Table 2. Operating conditions I Voo I ≤ 35 mV max with both differential gains. Without any signal on VSTBY, the device is in standby (internal 300 kΩ pull down resistor). Minimum current consumption is obtained when VSTBY = GND. When mounted on 4-layer PCB.
Typical application TS2007
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2 Typical application
TS2007 Typical application
Doc ID 13123 Rev 4 5/29
Table 4. Pin descriptions
Electrical characteristics TS2007
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3 Electrical characteristics
3.1 Electrical characteristic tables
Table 5. VCC = +5 V, GND = 0 V, Vic=2.5 V, Tamb = 25 °C (unless otherwise specified)
TS2007 Electrical characteristics
Doc ID 13123 Rev 4 7/29 Standby mode is active when VSTBY is tied to GND. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinus signal to VCC @ f = 217Hz. Independent of Gain configuration (6 or 12 dB) and between IN+ or IN- and GND.
Table 5. VCC = +5 V, GND = 0 V, Vic=2.5 V, Tamb = 25 °C (unless otherwise specified) (continued)
Electrical characteristics TS2007
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Table 6. VCC = +4.2 V, GND = 0 V, Vic=2.1 V, Tamb = 25 °C (unless otherwise specified)(1) All electrical values are guaranteed with correlation measurements at 2.4 V and 5 V. Standby mode is active when VSTBY is tied to GND. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinus signal to VCC @ f = 217 Hz. Independent of Gain configuration (6 or 12 dB) and between IN+ or IN- and GND.
TS2007 Electrical characteristics
Doc ID 13123 Rev 4 9/29
Table 7. VCC = +3.6 V, GND = 0 V, Vic=1.8 V, Tamb = 25 °C (unless otherwise specified)(1) All electrical values are guaranteed with correlation measurements at 2.4 V and 5 V. Standby mode is active when VSTBY is tied to GND. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinus signal to VCC @ f = 217 Hz. Independent of Gain configuration (6 or 12 dB) and between IN+ or IN- and GND.
Electrical characteristics TS2007
10/29 Doc ID 13123 Rev 4
Table 8. VCC = +3.0 V, GND = 0 V, Vic=1.5 V, Tamb = 25 °C (unless otherwise specified)(1) All electrical values are guaranteed with correlation measurements at 2.4 V and 5 V. Standby mode is active when VSTBY is tied to GND. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinus signal to VCC @ f = 217 Hz. Independent of Gain configuration (6 or 12 dB) and between IN+ or IN- and GND.
TS2007 Electrical characteristics
Doc ID 13123 Rev 4 11/29
Table 9. VCC = +2.4 V, GND = 0 V, Vic=1.2 V, Tamb = 25 °C (unless otherwise specified) Standby mode is active when VSTBY is tied to GND. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the superimposed sinus signal to VCC @ f = 217 Hz. Independent of Gain configuration (6 or 12 dB) and between IN+ or IN- and GND.
Electrical characteristics TS2007
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3.2 Electrical characteristic curves
The graphs shown in this section use the following abbreviations: RL+ 15 µH or 30 µH = pure resistor + very low series resistance inductor Filter = LC output filter (1 µF+30 µH for 4 Ω and 0.5 µF+60 µH for 8 Ω)
All measurements are done with CS1=1 µF and CS2=100 nF (see Figure 2, except for the
PSRR where CS1 is removed (see Figure3).
TS2007 Electrical characteristics
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Table 10. Index of graphics
Electrical characteristics TS2007
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Figure 4. Current consumption vs. power
supply voltage
Figure 5. Current consumption vs. standby
voltage
Figure 6. Efficiency vs. output power Figure 7. Efficiency vs. output power
Figure 8. Efficiency vs. output power Figure 9. Efficiency vs. output power
TS2007 Electrical characteristics
Doc ID 13123 Rev 4 15/29
Figure 10. Output power vs. power supply
voltage
Figure 11. Output power vs. power supply
voltage
Figure 12. PSRR vs. common mode input
voltage
Figure 13. PSRR vs. frequency
Figure 14. PSRR vs. frequency Figure 15. PSRR vs. frequency
