TPA3221 100W Stereo / 200W Mono HD Analog-Input Class-D Amplifier | TI.com

TPA3221 (ACTIVE)

100W Stereo / 200W Mono HD Analog-Input Class-D Amplifier

100W Stereo / 200W Mono HD Analog-Input Class-D Amplifier - TPA3221
 

Recommended alternative parts

  • TPA3156D2  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   For lower output power and up to 70-W stereo, see the TPA3156D2 Class-D amplifier.

Description

TPA3221 is a high-power 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 Efficient AD mode) modulation, and can drive up to 2 x 105 W into 4-Ω load or 1 x 208 W into 2-Ω load.

The TPA3221 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 TPA3221 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. TPA3221 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, overvoltage, cycle-by-cycle current limit, short circuit, clipping detection, overtemperature warning and shutdown, as well as DC speaker protection.

Features

  • Wide 7-V to 30-V Supply Voltage Operation
  • Stereo (2 x BTL) and Mono (1 x PBTL) Operation
  • Output Power at 10% THD+N
    • 105-W Stereo into 4 Ω in BTL Configuration
    • 112-W Stereo into 3 Ω in BTL Configuration
    • 208-W Mono into 2 Ω in PBTL Configuration
  • Output Power at 1% THD+N
    • 88-W Stereo into 4 Ω in BTL Configuration
    • 100-W Stereo into 3 Ω in BTL Configuration
    • 170-W Mono into 2 Ω in PBTL Configuration
  • 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)
    • <75-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, Overvoltage, Cycle-by-cycle Current Limit, Short Circuit, Clipping Detection, Overtemperature Warning and Shutdown, and DC Speaker Protection
  • 90% Efficient Class-D Operation (4 Ω)
  • Pin-Compatible Family of Devices with Voltage and Power-Level Options

All trademarks are the property of their respective owners.

View more

Parametrics Compare all products in Speaker Amps

 
Audio Input Type
Architecture
Speaker Channels (Max)
Power Stage Supply (Min) (V)
Power Stage Supply (Max) (V)
Output Power (W)
Load (Min) (ohms)
SNR (dB)
THD + N @ 1 kHz (%)
Iq (Typ) (mA)
Control Interface
Closed/Open Loop
Analog Supply (V) (Min)
Analog Supply (V) (Max)
Power to Parallel Bridge Tied Load (Max) (W)
PSRR (dB)
Operating Temperature Range (C)
Rating
TPA3221 TPA3220 TPA3244 TPA3245 TPA3250 TPA3251 TPA3255
Analog Input     Analog Input     Analog Input     Analog Input     Analog Input     Analog Input     Analog Input    
Class-D     Class-D     Class-D     Class-D     Class-D     Class-D     Class-D    
Stereo     Stereo     4     4     4     4     4    
7     7     12     12     12     12     18    
30     30     30     30     36     36     53.5    
100     100     100     115     130     175     315    
1     1     1.5     1.5     1.5     1.5     4    
108     108     110     112     110     111     112    
0.02     0.02     0.005     0.005     0.005     0.005     0.006    
15     15     15     15     12.5     12.5     24    
Hardware     Hardware     Hardware     Hardware     Hardware     Hardware     Hardware    
Closed     Closed     Closed     Closed     Closed     Closed     Closed    
5     5     10.8     10.8     10.8     10.8     10.8    
30     30     13.2     13.2     13.2     13.2     13.2    
200     200     160     230     189     355     600    
60     60     60     60     60     80     80    
-40 to 85     -40 to 85     0 to 70     0 to 70     0 to 70     0 to 70     0 to 70    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog