TDA8954 - Class-D Power Amplifier - Product Data Sheet

Oct 12, 2026

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TDA8954 is a stereo or mono high-efficiency Class D audio power amplifier integrated in a single IC with low power dissipation. It can provide up to 2 × 210 W into a 4 Ω load in stereo single-ended use, or 1 × 420 W into an 8 Ω load in mono bridge-tied-load operation. The design combines Class D efficiency (about 93% into 4 Ω) with audiophile-class AB-comparable sound quality, supports a wide ±12.5 V to ±42.5 V supply range, and includes diagnostic pins for protection monitoring.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages46

Reading Time1 h 56 min

AccessFree to download

1. General description

2. Features

3. Applications

Quick reference data

Table 1. Quick reference data

Table 2. Ordering information

6. Block diagram

7. Pinning information

7.1 Pinning

7.2 Pin description

TDA8954 2 × 210 W class-D power amplifier Rev. 01—24 December 2009 Product data sheet 1. General description The TDA8954 is a stereo or mono high-efficiency Class D audio power amplifier in a single IC featuring low power dissipation. It is designed to deliver up to 2 × 210 W into a 4 Ω load in a stereo Single-Ended (SE) application, or 1 × 420 W into an 8 Ω load in amono Bridge-Tied Load (BTL) application. It combines the benefits of Class D efficiency (≈93 % into a 4 Ω load) with audiophile sound quality comparable to that associated with Class AB amplification. The amplifier operates over a wide supply voltage range from ± 12.5 V to ±42.5 V and features low quiescent current consumption. The TDA8954 is supplied with two diagnostic pins for monitoring the status of Thermal Fold Back (TFB), Over Current Protection (OCP) and other protection circuits. 2. Features 􀂄 High output power in typical applications: 􀂋 SE 2 × 210 W, RL = 4 Ω (VDD = 41 V; VSS = −41 V) 􀂋 SE 2 × 235 W, RL = 3 Ω (VDD = 39 V; VSS = −39 V) 􀂋 SE 2 × 150 W, RL = 6 Ω (VDD = 41 V; VSS = −41 V) 􀂋 BTL 1 × 420 W, RL = 8 Ω (VDD = 41 V; VSS = −41 V) 􀂄 Symmetrical operating supply voltage range from ± 12.5 V to ±42.5 V 􀂄 Stereo full differential inputs, can be used as stereo SE or mono BTL amplifier 􀂄 Low noise 􀂄 Smooth pop noise-free start-up and switch off 􀂄 2-pin diagnostics for protection circuits 􀂄 Fixed frequency internal or external clock 􀂄 High efficiency ≈93 % 􀂄 Zero dead time switching 􀂄 Low quiescent current 􀂄 Advanced protection strategy: voltage protection and output current limiting 􀂄 Thermal FoldBack (TFB) with disable functionality 􀂄 Fixed gain of 30 dB in SE and 36 dB in BTL applications 􀂄 Fully short-circuit proof across load 􀂄 BD modulation in BTL configuration 􀂄 Clock protection NXP Semiconductors TDA8954 | 3. | Applications | 2 × 210 W class-D power amplifier | | --- | --- | --- | | 4. | 􀂄 DVD
􀂄 Mini and micro receiver
􀂄 Subwoofers
Quick reference data | 􀂄 Home Theater In A Box (HTIAB) system
􀂄 High-power speaker system
􀂄 Public Address (PA) system | Table 1. Quick reference data | Symbol | Parameter | Conditions | Min | Typ | Max | Unit | | --- | --- | --- | --- | --- | --- | --- | | General | | | | | | | | V DD | positive supply voltage | Operating mode | [1] 12.5 | 41 | 42.5 | V | | VSS | negative supply voltage | Operating mode | [2] −12.5 | −41 | −42.5 | V | | V th(ovp) | overvoltage protection threshold voltage | Standby, Mute modes; V DD − VSS | 85 | - | 90 | V | | IDD(tot) | total positive supply current | the sum of the currents through pins VDDA, VDDP1 and VDDP2
Operating mode; no load; no filter; no RC-snubber network connected; | - | 50 | 60 | mA | | ISS(tot) | total negative supply current | the sum of the currents through pins VSSA, VSSP1 and VSSP2
Operating mode; no load; no filter; no RC-snubber network connected; | - | 65 | 75 | mA | | Stereo single-ended configuration | | | | | | | | Po | output power | Tj = 85 °C; LLC = 15 μH; CLC = 680 nF (see Figure 13) | | | | | | | | THD + N = 10 %; RL = 4 Ω; V DD = 41 V;
VSS = −41 V | [3] - | 210 | - | W | | | | THD + N = 10 %; RL = 4 Ω; V DD = 35 V; VSS = −35 V | - | 150 | - | W | | Mono bridge-tied load configuration | | | | | | | | Po | output power | Tj = 85 °C; LLC = 22 μH; CLC = 680 nF (see Figure 13); RL = 8 Ω; THD + N = 10 %; V DD = 41 V; VSS = −41 V | [3] - | 420 | - | W | | [1] VDD is the supply voltage on pins VDDP1, VDDP2 and VDDA.
[2] VSS is the supply voltage on pins VSSP1, VSSP2 and VSSA.
[3] Output power is measured indirectly; based on RDSon measurement; see Section 14.3.
5. Ordering information | | | | | | | Table 2. Ordering information | Type number | Package | | | | --- | --- | --- | --- | | | Name | Description | Version | | TDA8954J DBS23P plastic DIL-bent-SIL power package; 23 leads (straight lead length 3.2 mm) SOT411-1 | | | |

FAQs

What output power does the TDA8954 support in stereo single-ended (SE) and mono BTL modes?

In SE, it is designed for up to 2 × 210 W into 4 Ω (with specified supply conditions). In BTL, it supports up to 1 × 420 W into 8 Ω.

Which supply voltage range and efficiency characteristics are specified for the amplifier?

The amplifier operates over a wide symmetric supply range from ±12.5 V to ±42.5 V. It is specified with high efficiency, approximately 93% into a 4 Ω load.

How does the TDA8954 handle protection and diagnostics?

It provides two diagnostic pins to monitor status related to Thermal Fold Back (TFB), over-current protection (OCP), and other protection circuits. The feature set also lists advanced voltage protection and output current limiting.

Oct 12, 2026

Upload by moss~