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TSC2111 Fiches technique(PDF) 30 Page - Texas Instruments |
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TSC2111 Fiches technique(HTML) 30 Page - Texas Instruments |
30 / 99 page TSC2111 SLAS495− JUNE 2006 www.ti.com 30 −20 −18 −16 −14 −12 −10 −8 −6 −4 −2 0 0 200 400 600 800 1000 f − Frequency − Hz Figure 20. Uncompensated Response For 16- Ω Load and 50-mF Decoupling Capacitor −20 −18 −16 −14 −12 −10 −8 −6 −4 −2 0 0 200 400 600 800 1000 f − Frequency − Hz Figure 21. Frequency Response For 16- Ω Load and 50-mF Decoupling Capacitor After Gain Compensation Using Above Set of Coefficients For Audio Effects Filter Using the capless output configuration eliminates the need for these capacitors and removes the accompanying high-pass filter entirely. However, this configuration does have one drawback – if the RETURN terminal of the headphone jack (which is wired to the TSC2111 VGND pin) is ever connected to a ground that is shorted to the TSC2111 ground pin, then the VGND amplifier enters short-circuit protection, and the audio output does not function properly. The TSC2111 incorporates a programmable short-circuit detection/protection function. In case of short circuit, all analog outputs are disabled and a read only bit D1 of control register 1DH/page 2 is set. In such cases, there are two ways to return to normal operation: − Hardware or software reset − Power down all the output drivers, which can be achieved by setting bits D12, D11, D 8, D7, and D6 of control register 05H/page 2 and then wait for driver power down status flags (bits D15−D10 of control register 25H/page 2) to become 1. The wait time is typically less than 50 ms after which, output drivers can be programmed as desired. |
Numéro de pièce similaire - TSC2111 |
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Description similaire - TSC2111 |
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