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TPA3131D2RHBR Arkusz danych(PDF) 11 Page - Texas Instruments |
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TPA3131D2RHBR Arkusz danych(HTML) 11 Page - Texas Instruments |
11 / 35 page + – + – + – + + SDZ MUTE TTL Buffer Gain Control GAIN OUTPR FB RINN RINP Gain Control OUTPNR FB FAULTZ SYNC GAIN/SLV AM<2:0> PLIMIT AVCC GVDD LDO Regulator LINP LINN GND Input Sense PBTL Select OUTPL_FB Gain Control OUTNL_FB AVDD GVDD PLIMIT Reference Ramp Generator Biases and References Startup Protection Logic SC Detect DC Detect Thermal Detect UVLO/OVLO PVCC GVDD PVCC Gate Drive OUTNL_ FB PVCC GVDD PVCC Gate Drive PWM Logic PBTL Select OUTPL_FB GND OUTPL BSPL GND OUTNL BSNL GND BSNR OUTPR GND OUTNR OUTNR_ FB BSPR OUTPR_FB PVCC GVDD PVCC Gate Drive PVCC GVDD PVCC Gate Drive PWM Logic PBTL Select PLIMIT PLIMIT + – + – + – + – + – + – – – Thermal Pad TPA3131D2, TPA3132D2 www.ti.com SLOS841B – SEPTEMBER 2013 – REVISED JANUARY 2015 7 Detailed Description 7.1 Overview The TPA3132D2 device is a high-efficiency stereo Class-D audio power amplifier optimized for high-transient power capability to utilize the dynamic power headroom of small loudspeakers. It’s capable of delivering high peak power into a 4- Ω speaker. The device can be configured for either master or slave operation by using the SYNC pin. This helps to prevent audible beats noise. 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 Gain Setting and Master and Slave The gain of the TPA3131D2 is set by the voltage divider connected to the GAIN/SLV control pin. Master or Slave mode is also controlled by the same pin. An internal ADC is used to detect the 8 input states. The first four stages sets the GAIN in Master mode in gains of 20, 26, 32, 36 dB respectively, while the next four stages sets the GAIN in Slave mode in gains of 20, 26, 32, 36 dB respectively. The gain setting is latched during power-up and cannot be changed while device is powered. shows the recommended resistor values and the state and gain: Copyright © 2013–2015, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: TPA3131D2 TPA3132D2 |
Podobny numer części - TPA3131D2RHBR |
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