Philips Semiconductors | TDA8943SF |
| 7 W mono BTL audio amplifier |
12. Dynamic characteristics
Table 8: Dynamic characteristics
VCC = 12 V; Tamb = 25 °C; RL = 8 Ω; f = 1 kHz; VMODE = 0 V; measured in test circuit Figure 3; unless otherwise specified.
Symbol | Parameter | Conditions |
| Min | Typ | Max | Unit | ||
Po | output power | THD = 10% |
| 6 | 7 | - | W | ||
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| THD = 0.5% |
| 4 | 5 | - | W | ||
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THD | total harmonic distortion | Po = 1 W |
| - | 0.03 | 0.1 | % | ||
Gv | voltage gain |
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| 31 | 32 | 33 | dB |
Zi(dif) | differential input impedance |
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| 70 | 90 | 110 | kΩ |
Vn(o) | noise output voltage |
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| [1] | - | 90 | 120 | μV |
SVRR | supply voltage ripple rejection | f | ripple | = 1 kHz | [2] | 50 | - | - | dB |
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| fripple = 100 Hz | [2] | - | <tbf> | - | dB | ||
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| to 20 kHz |
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Vo(mute) | output voltage | mute mode | [3] | - | - | 50 | μV | ||
[1]The noise output voltage is measured at the output in a frequency range from 20 Hz to 20 kHz (unweighted), with a source impedance Rsource = 0 Ω at the input.
[2]Supply voltage ripple rejection is measured at the output, with a source impedance Rsource = 0 Ω at the input. The ripple voltage is a sine wave with a frequency fripple and an amplitude of 100 mV (RMS), which is applied to the positive supply rail.
[3]Output voltage in mute mode is measured with an input voltage of 1 V (RMS) in a bandwidth of 20 kHz, so including noise.
13. Application information
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| VCC | 100 nF | |
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| 2 |
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Rsource | 220 nF |
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| TDA8943SF |
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IN− | 5 |
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| 1 | OUT− | ||
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Vi | 220 nF |
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| IN+ | 4 |
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| 3 | OUT+ | |
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| VCC |
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| MODE | 7 | STANDBY/ |
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MICROCONTROLLER |
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| MUTE LOGIC | 20 |
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| kΩ |
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| SVR | 6 |
| SHORT CIRCUIT |
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| AND |
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| 20 | TEMPERATURE |
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| PROTECTION |
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| 10 μF |
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| kΩ |
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| 8 |
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| GND | MBK943 |
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VCC
1000 μF
RL
8Ω
Fig 3. Application diagram.
9397 750 04877 | © Philips Electronics N.V. 1999. All rights reserved. |
Preliminary specification | 14 April 1999 | 6 of 12 |