Manual do usuário Texas Instruments TPA2012D2

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User's Guide
SLOU174A–February 2005–Revised April 2005
TPA2012D2 Audio Power Amplifier Evaluation Module
The TPA2012D2 audio power amplifier evaluation module is a complete, low-power,
Class-D, stereo audio power amplifier capable of delivering 1.2 W/channel (YZH
package). All components and the evaluation module are Pb-Free.
Contents
1 Introduction.......................................................................................... 1
2 Operation ............................................

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www.ti.com Operation 2.50 See Note V = 2.5 V, 1% DD 2 V = 2.5 V, 10% DD V = 3.6 V, 1% DD 1.50 V = 3.6 V, 10% DD V = 5 V, 1% DD V = 3.6 V, 10% DD 1 0.50 0 4 9 14 19 24 29 34 R − Load Resistance −
L Figure 1. TPA2012D2 Output Power Note: The dashed portion of the curve indicates the region where the TPA2012D2YZH (WCSP) is thermally limited. Output power in this region will depend on the heat dissipation provided by the circuit board. TPA2012D2RTJ (QFN) is not thermally limited and can achieve ou

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www.ti.com Reference Table 1. Gain Settings Amplifier Gain Setting (typ) (1) (1) GAIN1 GAIN0 V/V dB 0 0 2 6 0 1 4 12 1 0 8 18 1 1 16 24 (1) 0 = Jumper installed, 1 = Jumper not installed 2.1.2.3 Shutdown Controls 1. The TPA2012D2 provides independent shutdown controls so that each channel can be controlled separately. The shutdown pins, SDL and SDR, are active low. This means that a low voltage (ground) on this pin places the appropriate channel in shutdown mode. Using the pushbuttons provided o

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www.ti.com Reference 3.1 TPA2012D2 EVM PCB Layers Figure 2. Top Layer Figure 3. Bottom Layer 4 TPA2012D2 Audio Power Amplifier Evaluation Module SLOU174A–February 2005–Revised April 2005

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www.ti.com Reference 3.2 TPA2012D2 EVM Schematic Diagram VDD VDD R4 R3 120 k
120 k
VDD GAIN1 GAIN0 C12 C9 10 F 10 F VDD (Not Populated) VDD C11 C10 0.1 F INL+ U1 1 F L4 1 F C5 OUTL+ INL+ OUTL+ INL− 1 F C6 INL− OUTL− C4 1 F C7 INR− OUTR− 1 nF 1 F C8 INR+ OUTR+ INR− L3 OUTL− INR+ C3 VDD 1 nF R1 120 k
L2 OUTR− SDR C2 VDD 1 nF SDR JP1 R2 L1 120 k
OUTR+ SDL C1 1 nF SDL Figure 4. TPA2012D2 EVM Schematic Diagram SLOU174A–February 2005–Revised April 2005 TPA2012D2 Audio Power Amplifier Evalu

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www.ti.com Related Documentation From Texas Instruments 3.3 TPA2012D2 Audio Power Amplifer Evaluation Module Parts List Table 2. TPA2012D2 EVM Parts List Part No. Description Size Qty. Vendor Part Number C1-C4 Capacitor, Ceramic, 1 nF, 50V, X7R 0402 4 TDK C1005X7R1H102 C5-C8, C10 Capacitor, Ceramic, 1 µF, 6.3V, Y5V 0402 5 TDK C1005Y5VOJ105 C11 Capacitor, Ceramic, 0.1 µF, 6.3V, X5R 0402 1 TDK C1005X5R1A104 C12 Capacitor, Ceramic, 10 µF, 10V, Y5V 0805 1 TDK C2012Y5V1A106 C9 Capacitor (Do not popul

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FCC Warnings This equipment is intended for use in a laboratory test environment only. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to subpart J of part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this equipment in other environments may cause interference with radio communications, in which case the user at his own expense

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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the t