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RB-TA3020-1 Dataheets PDF



Part Number RB-TA3020-1
Manufacturers Tripath Technology
Logo Tripath Technology
Description (RB-TA3020-1/-2) CLASS-T DIGITAL AUDIO AMPLIFIER REFERENCE BOARD
Datasheet RB-TA3020-1 DatasheetRB-TA3020-1 Datasheet (PDF)

Tr i path Technol ogy, I nc. - Techni cal I nfor m ati on www.DataSheet4U.com RB-TA3020-1 RB-TA3020-2 CLASS-T DIGITAL AUDIO AMPLIFIER REFERENCE BOARD USING DIGITAL POWER PROCESSING (DPP T M ) TECHNOLOGY Technical Information Revision 3.0- March 2002 GENERAL DESCRIPTION The RB-TA3020 reference board is based on the TA3020 digital audio power amplifier driver from Tripath Technology. This board is designed to provide a simple and straightforward environment for the evaluation of the Tripath s.

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Tr i path Technol ogy, I nc. - Techni cal I nfor m ati on www.DataSheet4U.com RB-TA3020-1 RB-TA3020-2 CLASS-T DIGITAL AUDIO AMPLIFIER REFERENCE BOARD USING DIGITAL POWER PROCESSING (DPP T M ) TECHNOLOGY Technical Information Revision 3.0- March 2002 GENERAL DESCRIPTION The RB-TA3020 reference board is based on the TA3020 digital audio power amplifier driver from Tripath Technology. This board is designed to provide a simple and straightforward environment for the evaluation of the Tripath stereo TA3020 amplifier. This board can also be used in a bridged configuration for high power mono output. Note: There are two versions of the RB-TA3020, depending on nominal supply voltage. RB-TA3020-1 – Nominal supply voltage +/-21V to +/-39V RB-TA3020-2 – Nominal supply voltage +/-35V to +/-60V Features RB-TA3020-1: 2 x 70W continuous output power @ 0.1% THD+N, 4Ω, +28V RB-TA3020-1: 250W continuous output power @ 0.1% THD+N, bridged 4Ω, +28V RB-TA3020-2: 2 x 175W continuous output power @ 0.1% THD+N, 4Ω, +45V RB-TA3020-2: 525W continuous output power @ 0.1% THD+N, bridged 4Ω, +45V Outputs short circuit protected Benefits Uses only N-channel power MOSFETs Ready to use in many applications: 2 channel stereo systems Powered 2.1 speaker systems Powered Subwoofers Note: RB-TA3020-2 shown 1 RB-TA3020, Rev. 3.0/03.02 Tr i path Technol ogy, I nc. - Techni cal I nfor m ati on OPERATING INSTRUCTIONS Power Supply Description There are four external power supplies required to operate this board: VPP, VNN, VN10, and V5 (see Figures 1 and 2). VPP and VNN power the load and so must each be able to provide half of the desired output power, plus about 20% for overhead and margin. The TA3020 amplifier also requires a supply, VN10, that is 10V more positive than VNN and tracks VNN. All output and power supply connections are made using tinned wire (not shown). Though not required, the following powering-up sequence is usually adhered to during bench evaluations: 1st) V5 and VN10, 2nd) VNN and 3rd) VPP (refer to the Turn-on/off Pop section). Please refer to the Turnon/off Pop section. The positive and negative supply voltages do not have to match or track each other, but distortion or clipping levels will be determined by the lowest (absolute) supply voltage. Figure 1 shows the proper supply configuration for the RB-TA3020. VPP (yellow) V5 (red) VS 5V AGND (black) PGND (blue) VS 10V VNN (orange) Figure 1 VN10 (green) Note: To avoid signal degradation, the Analog Ground and Power Ground should be kept separate at the power supply. They are connected locally on the RB-TA3020. Connector J5 (Yellow) J5 (Blue) J5 (Orange) J5 (Green) J1 (Red) J1 (Black) Power Supply VPP PGND VNN VN10 V5 AGND Table 1 2 RB-TA3020, Rev. 3.0/03.02 Tr i path Technol ogy, I nc. - Techni cal I nfor m ati on Input Connections Audio input to the board is located at CH1 INPUT (J100) and CH2 INPUT (J200) (see Figures 2 and 3). The input can be a test signal or music source. A dual RCA cable is provided with female 100mil connectors that mate with J100 and J200. Output Connections There are two output connectors on the reference board for the speaker outputs. Channel 1 output and associated Power Ground 1 is located at J101. Channel 2 output and associated Power Ground 2 is located at J201. A two-wire harness for each output is provided. See Table 2 for the output connector wire colors. The TA3020 can be operated as a two-channel single-ended amplifier, bridged mono output amplifier (see Figure 9) or with a passive crossover for a 2.1 channel application (refer to Application Note 13). Outputs can be any passive speaker(s) or test measurement equipment with resistive load (see Application Note 4 for more information on bench testing). Connector Name J101 J201 Output White Red Table 2 Ground Blue Black Turn-on/off Pop To avoid turn-on pops, bring the mute from a high to a low state after all power supplies have settled. To avoid turn-off pops, bring the mute from a low to a high state before turning off the supplies. The only issue with bringing up the V5 last, or turning it off first, is clicks/pops. If the mute line is properly toggled (slow turn-on, quick turn-off), then any power up sequence is acceptable. In practice, the V5 will usually collapse before VPP and VNN. The same discussion holds true for the VN10 supply. It can collapse before VPP or VNN though this may cause a larger turn-off pop than if the mute had been activated before either the VN10 or V5 supply have collapsed. No damage will occur to the TA3020 if either the V5 or VN10 collapse before VPP or VNN, assuming the mute is asserted before the supplies start to discharge. HMUTE There is an LED, D1, which will illuminate if a fault condition is reported. HMUTE, pin 15, will illuminate D1 via R2, if the processor detects an over or under voltage fault, as well as an over current fault. In addition, if MUTE is high (by removing jumper on J4), the LED will also be illuminated. An over/.


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