TLV320DAC32 Low-Power Stereo DAC with 4 Outputs, HP/Speaker Amplifier and 3D Effects |

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Low-Power Stereo DAC with 4 Outputs, HP/Speaker Amplifier and 3D Effects


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  • TLV320DAC3100  -  Stereo DAC, 95dB SNR supports up to 192kHZ Sample Rates, and has a Mono Class-D Amplifier
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The TLV320DAC32 is a low power stereo audio DAC with and integrated power amplifier designed to drive stereo headphones or speakers. This device also has a pair of analog inputs which allow routing of external signals to the output amplifiers. The playback path includes a mix/mux capability from the stereo DAC and analog inputs, through programmable volume controls, to the headphone outputs. Extensive register-based power control is included, enabling stereo 96-kHz playback as low as 20mW from a 3.3-V analog supply, making it ideal for portable battery-powered audio and telephony applications.

The TLV320DAC32 contains four high-power output drivers. These drivers are capable of driving a variety of load configurations, including up to four channels of single-ended 16-Ω headphones using ac-coupling capacitors, or stereo 16-Ω headphones in a cap-less output configuraton. In addition, pairs of drivers can be used to drive 8-Ω speakers in a BTL configuration at 500 mW per channel.

The stereo audio DAC supports sampling rates from 8-kHz to 96-kHz and includes programmable digital filtering in the DAC path for 3D, bass, treble, midrange effects, speaker equalization, and de-emphasis for 32-kHz, 44.1-kHz, and 48-kHz rates.

The serial control bus uses the I2C protocol, while the serial audio data bus is programmable for I2S, left/right-justified, DSP, or TDM modes. A highly programmable PLL is included for flexible clock generation and support for all standard audio rates from a wide range of available MCLKs, varying from 512-kHz to 50-MHz, with special attention paid to the most popular cases of 12-MHz, 13-MHz, 16-MHz, 19.2-MHz, and 19.68-MHz system clocks.

The TLV320DAC32 operates from analog supplies of 2.7 V - 3.6 V, a digital core supply of 1.525 V - 1.95 V, and a digital I/O supply of 1.1 V - 3.6 V. An internal LDO regulator allows the device to internally generate the lower voltage power supply needed for digital core logic, thereby allowing full operation from a single 3.3-V supply voltage.

The TLV320DAC32 is a software-compatible subset of the existing TLV320AIC32 and TLV320AIC33 audio codecs, allowing simple transition from a system with record and playback to a system with playback only.

The device is available in a 5 x 5mm 32-lead QFN package.


  • Stereo Audio DAC
    • 95-dBA Signal-to-Noise Ratio
    • 16/20/24/32-Bit Data
    • Supports Rates From 8 kHz to 96 kHz
    • 3D/Bass/Treble/EQ/De-emphasis Effects
  • Two Audio Input Pins
    • Allows Analog Bypass Path
  • Four Audio Output Drivers
    • Stereo 8-, 500-mW/Channel SpeakerDrive Capability
    • Stereo Fully Differential or Single-Ended Headphone Drivers
  • Low Power: 18-mW Stereo 48-kHz Playback With 3.3-V Analog Supply
  • Programmable Input/Output Analog Gains
  • Programmable Microphone Bias Level
  • Headphone Jack Detection
  • Programmable PLL for Flexible Clock Generation
  • I2C Control Bus
  • Audio Serial Data Bus Supports I2S, Left/Right-Justified, DSP, and TDM Modes
  • Extensive Modular Power Control
  • Internal Selectable LDO Allows Operation From Single 3.3-V Supply
  • Power Supplies:
    • Analog: 2.7 V-3.6 V.
    • Digital Core: 1.525 V-1.95 V
    • Digital I/O: 1.1 V-3.6 V
  • Package: 5 × 5 mm 32-QFN


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Part number Order 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 (Min) (V) Analog supply (Max) (V) Sampling rate (Max) (kHz) PSRR (dB) Operating temperature range (C) Rating
TLV320DAC32 Order now Analog Input
Digital Input    
Class-AB                     I2C     Closed     2.7     3.6     96       -40 to 85     Catalog    
TLV320DAC23 Order now Digital Input     Class-AB                     I2C
Closed     2.7     3.6     96       -10 to 70
-40 to 85    
TLV320DAC26 Samples not available Digital Input     Class-AB                     SPI     Closed     2.7     3.6     53       -40 to 85     Catalog    
TLV320DAC3100 Order now Digital Input     Class-D     Mono     2.7     3.6     2.5     4     95     0.008     16.38     I2C     Closed     2.7     3.6     192     62     -40 to 85     Catalog    
TLV320DAC3101 Order now Analog Input     Class-D     Stereo     2.7     3.6     1.29     8