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


Package | PIN: DDV | 44
Temp: I (-40 to 85)
Carrier: Partial Tube
Qty Price
1-9 $4.60
10-24 $4.14
25-99 $3.87
100-249 $3.47
250-499 $3.24
500-749 $2.82
750-999 $2.44
1000+ $2.39


  • 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 Stereointo 3 Ω in BTL Configuration
    • 208-W Mono into 2 Ω in PBTLConfiguration
  • Output Power at 1% THD+N
    • 88-W Stereo into 4 Ω in BTL Configuration
    • 100-W Stereo into3 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 HDSources
    • 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 AnalogInputs
    • Selectable Gains: 18 dB, 24 dB, 30 dB, 34dB
  • 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

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Texas Instruments  TPA3221DDV

TPA3221 is a high-power Class-Damplifier that enables efficient operation at full-power, idle and standby. The device featuresclosed-loop feedback with a bandwidth up to 100 kHz, which provides low distortion across the audioband and delivers excellent sound quality. The device operates with either AD or low idle-currentHEAD (High Efficient AD mode) modulation, and can drive up to 2 x 105 W into 4-Ω load or 1 x 208 Winto 2-Ω load.

The TPA3221 features a single-ended or differential analog-inputinterface that supports up to 2 VRMS with four selectable gains: 18 dB, 24dB, 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 of70-mΩ MOSFETs, an optimized gate drive scheme and low-power operating modes.TPA3221 includes a built-in LDO for easy integration in single-power-supplysystems. To further simplify the design, the device integrates essential protection featuresincluding undervoltage, overvoltage, cycle-by-cycle current limit, short circuit, clippingdetection, overtemperature warning and shutdown, as well as DC speaker protection.