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TDF8599BTH датащи(PDF) 13 Page - NXP Semiconductors |
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TDF8599BTH датащи(HTML) 13 Page - NXP Semiconductors |
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13 / 54 page ![]() TDF8599B_1 © NXP B.V. 2009. All rights reserved. Product data sheet Rev. 01 — 29 July 2009 13 of 54 NXP Semiconductors TDF8599B I2C-bus controlled dual channel class-D power amplifier 8.4.2 Phase staggering (Slave mode) In Slave mode with phase lock operation enabled, a phase shift with respect to the incoming clock signal can be selected to distribute the switching moments over time. In non-I2C-bus mode, 1 ⁄ 2 π phase shift can be programmed using pin MOD. In I 2C-bus mode, five different phase shifts (1 ⁄ 4 π, 1 ⁄ 3 π, 1 ⁄ 2 π, 2 ⁄ 3 π, 3 ⁄ 4 π) can be selected using the I 2C-bus bits (IB3[D1:D3]). See Table 8 for selection of the phase shift in non-I2C-bus mode with pin MOD. An additional capacitor must be connected to pin SSM when 1 ⁄ 4 π phase shift is used (see Figure 8). An example of using 1 ⁄ 2 π phase shift for BD modulation is shown in Figure 12. a. Phase switching cycle. b. Inverted signal to the modulator. Fig 11. BD modulation 001aai781 INxP OUTxP OUTxP, OUTxN 001aai782 INxN OUTxN |
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