TPA3220 Texas instruments

TPA3220

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TPA3220

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Описание

TPA3220 is a pad-down Class-D amplifier that enables efficient operation at full-power, idle and standby. The device features closed-loop feedback with a bandwidth up to 100 kHz, which provides low distortion across the audio band and delivers excellent sound quality. The device operates with either AD or low idle-current HEAD (High Efficiency AD) modulation and can drive up to 2 x 60 W continuously or 2 x 110 W peak into 4-Ω load with the thermal pad on bottom connected to the PCB. The TPA3220 features a single-ended or differential analog-input interface that supports up to 2 VRMS with four selectable gains: 18 dB, 24 dB, 30 dB and 34 dB. The TPA3220 also achieves >90% efficiency, low idle power (<0.25 W) and ultra-low standby power (<0.1 W). This is made possible through the use of 70-mΩ MOSFETs, an optimized gate drive scheme and low-power operating modes. TPA3220 includes a built-in LDO for easy integration in single-power-supply systems. To further simplify the design, the device integrates essential protection features including undervoltage, cycle-by-cycle current limit, short circuit, clipping detection, overtemperature warning and shutdown, as well as DC speaker protection.

Stereo (2 x BTL) and Mono (1 x PBTL) Operation
Output Power at 10% THD+N
- 60-W Stereo Continuous into 8 Ω in BTL
- 110-W Stereo Peak into 4 Ω in BTL
Output Power at 1% THD+N
- 50-W Stereo Continuous into 8 Ω in BTL
- 89-W Stereo Peak into 4 Ω in BTL
5-V Gate Drive or Built-in LDO for Optional Single-Supply Operation
Closed-Loop Feedback Design
- Signal Bandwidth up to 100 kHz for High-Frequency Content From HD Sources
- 0.02% THD+N at 1 W into 4 Ω
- 60-dB PSRR (BTL, No Input Signal)
- <72-µV Output Noise (A-Weighted)
- >108-dB SNR (A-Weighted)
- AD or HEAD Modulation Schemes
Low-Power Operating Modes
- Standby Modes: Mute and < 1 mA Shutdown
- Low Idle-Current HEAD Modulation Scheme
- Single-Channel BTL Operation
Multiple Input Options to Simplify Pre-Amp Design
- Differential or Single-Ended Analog Inputs
- Selectable Gains: 18 dB, 24 dB, 30 dB, 34 dB
Integrated Protection: Undervoltage, Cycle-by-cycle Current Limit, Short Circuit, Clipping Detection, Overtemperature Warning and Shutdown, and DC Speaker Protection
90% Efficient Class-D Operation (4 Ω)
Thermal Pad Located on Package Bottom
Pin-Compatible Family of Devices with Voltage and Power-Level Options

Audio input type	Analog Input
Architecture	Class-D
Speaker channels (max)	Stereo
Rating	Catalog
Power stage supply (max) (V)	30
Power stage supply (min) (V)	7
Load (min) (Ω)	1
Output power (W)	100
SNR (dB)	108
THD + N at 1 kHz (%)	0.02
Iq (typ) (mA)	15
Control interface	Hardware
Closed/open loop	Closed
Analog supply (min) (V)	5
Analog supply (max) (V)	30
PSRR (dB)	60
Operating temperature range (°C)	-40 to 85