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  • TAS2120 8.2W Mono Digital Input Class-D Speaker Amp with Integrated 14.75V Class-H Boost

    • SLASFC6 August   2024 TAS2120

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  • TAS2120 8.2W Mono Digital Input Class-D Speaker Amp with Integrated 14.75V Class-H Boost
  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Device Functional Modes
      1. 6.3.1 Operational Modes
        1. 6.3.1.1 Hardware Shutdown
        2. 6.3.1.2 Hardware Config Modes
        3. 6.3.1.3 Software Power Modes Control and Software Reset
        4. 6.3.1.4 Efficiency and power saving modes
          1. 6.3.1.4.1 Noise Gate
          2. 6.3.1.4.2 Music Efficiency Mode
          3. 6.3.1.4.3 VDD Y-bridge
          4. 6.3.1.4.4 Class-H Boost
        5. 6.3.1.5 2S Battery Mode
        6. 6.3.1.6 External PVDD Mode
      2. 6.3.2 Faults and Status
        1. 6.3.2.1 Interrupt generation and clearing
    4. 6.4 Feature Description
      1. 6.4.1 PurePath™ Console 3 Software
      2. 6.4.2 Playback Signal Path
        1. 6.4.2.1 Digital Volume Control and Amplifier Output Level
        2. 6.4.2.2 High Pass Filter
        3. 6.4.2.3 Class-D Amplifier
        4. 6.4.2.4 Supply Tracking Limiters with Brown Out Prevention
          1. 6.4.2.4.1 Voltage Limiter and Clipping protection
        5. 6.4.2.5 Tone Generator
      3. 6.4.3 Digital Audio Serial Interface
        1. 6.4.3.1 Digital Loopback
      4. 6.4.4 Boost
      5. 6.4.5 Supply Voltage Monitors
      6. 6.4.6 Thermal Protection
      7. 6.4.7 Clocks and PLL
        1. 6.4.7.1 Auto clock based wakeup and clock errors
      8. 6.4.8 Digital IO pins
    5. 6.5 Programming
      1. 6.5.1 I2C Control Interface
      2. 6.5.2 I2C Address Selection
      3. 6.5.3 General I2C Operation
      4. 6.5.4 I2C Single-Byte and Multiple-Byte Transfers
      5. 6.5.5 I2C Single-Byte Write
      6. 6.5.6 I2C Multiple-Byte Write
      7. 6.5.7 I2C Single-Byte Read
      8. 6.5.8 I2C Multiple-Byte Read
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Mono/Stereo Configuration
        2. 7.2.2.2 Boost Converter Passive Devices
        3. 7.2.2.3 EMI Passive Devices
        4. 7.2.2.4 Miscellaneous Passive Devices
      3. 7.2.3 Application Performance Plots
  9. 8 Power Supply Recommendations
  10. 9 Layout
    1. 9.1 Layout Guidelines
    2. 9.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Package Option Addendum
    2. 12.2 Tape and Reel Information
  14. IMPORTANT NOTICE

Package Options

Mechanical Data (Package|Pins)
  • RBG|26
    • MPQF809
Thermal pad, mechanical data (Package|Pins)
Orderable Information
  • slasfc6_oa
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  • Full reading width
    • Full reading width
    • Comfortable reading width
    • Expanded reading width
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Data Sheet

TAS2120 8.2W Mono Digital Input Class-D Speaker Amp with Integrated 14.75V Class-H Boost

1 Features

  • Powerful Class-D amplifier
    • 8.2W 1% THD+N
    • 14.75V boost with 5.1A max current limit
  • Best in class efficiency
    • Upto 90% efficiency at system level for 8Ω load
    • 12.9mW idle channel power, noise gate off
    • 5mW idle channel power, noise gate on
    • Integrated 1.8V Y-bridge
  • High performance audio channel
    • 4.2µV A-wt. idle channel noise
    • 114dB Dynamic Range
    • -89dB THD+N
    • Low EMI performance with ERC and SSM
    • < 1µs chip to chip group delay matching
  • Advanced integrated features
    • Signal detection high efficiency modes
    • High accuracy voltage monitor & temp sensor
    • Programmable battery current limit at 39mA step size
  • Ease of use features
    • Hardware pin control or I2C control
    • 1S battery, 2S battery, External PVDD (3S battery) supply
    • Clock based power up/down
    • Auto clock rate detection: 16 to 192kHz
    • MCLK free operation
    • Thermal and over current protection
  • Power Supplies and user interface
    • VBAT: 2.5V to 5.5V
    • VDD: 1.65V to 1.95V
    • IOVDD: 1.8V or 3.3V
    • VBAT_SNS: 2.5V to 10.0V
    • I2S/TDM: 8 channels
    • HW pin control or I2C based control
  • 26-Pin, 0.4mm Pitch, QFN package

2 Applications

  • Smart Speakers with Voice Assistance
  • Bluetooth and Wireless speakers
  • Tablets, Wearables
  • Laptop, Desktop Computers

3 Description

The TAS2120 is a mono, digital input Class-D audio amplifier with an integrated Boost for higher power delivery in battery-operated systems.

Device is optimized to deliver best battery life for real-use cases of music playback and voice calls. Advanced efficiency optimization features like Y-bridge, and algorithms enable the device to produce best-in-class efficiency across all power regions of operation. The Class-D amplifier is capable of delivering 8.2W output powerusing integrated Class-H Boost.

TAS2120 device supports look-ahead algorithm based optimum boost voltage levels to match the output of audio signal. This provides all the power needed for peak output while significantly reducing the average power consumption.

Up to four devices can share a common bus via I2S/TDM + I2C interfaces. The device also supports five HW Control pins that can configure the device for the desired mode of operation.

Device Information
PART NUMBERPACKAGE(1)PACKAGE SIZE (2)
TAS2120QFN4mm × 3.5mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
TAS2120 Functional block diagram Functional block diagram

4 Pin Configuration and Functions

TAS2120 QFN Package Bottom ViewFigure 4-1 QFN Package Bottom View
Pin Functions
PINType(1)DESCRIPTION
NAMENO.
BGND12PBoost ground. Connect to PCB GND plane strongly with multiple vias.
DREG26PDigital core voltage regulator output. Bypass to GND with a capacitor. Do not connect to an external load.
FSYNC8II2S word clock or TDM frame sync.
GREG17PHigh-side gate CP regulator output. Do not connect to an external load.
GND22, 23, 25PConnect to PCB GND plane. Strong connection to ground plane required through multiple vias.
IOVDD5P1.8V or 3.3V Digital IO supply. Decouple to GND with capacitor.
IRQZ6OOpen drain, active low interrupt pin. Pull up to IOVDD with resistor if optional internal pullup is not used.
OUT_N19OClass-D negative output.
OUT_P20OClass-D positive output.
PGND21PClass-D Power stage ground. Connect to PCB GND plane strongly through multiple vias.
PVDD18PIntegrated boost output and Class-D power stage supply.
SBCLK9II2S/TDM serial bit clock.
SDIN10II2S or TDM serial data input.
SDOUT11I/OI2S or TDM serial data output.
SDZ7IActive low hardware shutdown.
SEL116I

HW Mode: Select 1 Pin. Amplifier gain level selection with volume ramp enable and disable options.

I2C Mode: Short to GND for I2C mode selection.

SEL2_SCL4I

HW Mode: Select 2 Pin. I2S, TDM, Left justified selection.

I2C Mode: Clock Pin. Pull up to IOVDD with a resistor.

SEL3_SDA3I/O

HW Mode: Select 3 Pin. Data valid rising edge and falling edge selection.

I2C Mode: Data Pin. Pull up to IOVDD with a resistor.

SEL4_ADDR2I

HW Mode: Select 4 Pin.Y-bridge threshold configuration setting.

I2C Mode: I2C address pin.

SEL51I/O

HW Mode: Select5 Pin. Boost 1S, 2S, External PVDD mode selection.

SW13PBoost converter switch input.
VBAT15PBattery power supply input. Connect to a 2.5 to 5.5V supply and decouple with a capacitor.
VBAT_SNS14IBattery sense terminal. Connect to 1S or 2S battery supply for remote battery sensing. Ground the pin if remote sensing is not used.
VDD24PConnect to 1.8V supply and decouple to GND with capacitor.
(1) I = Input, O = Output, I/O = Input or Output, G = Ground, P = Power.

5 Specifications

5.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)
MIN MAX UNIT
Supply Voltage PVDD –0.3 19 V
Supply Voltage VBAT –0.3 6 V
Supply Voltage Sense VBAT_SNS –0.3 12 V
Supply Voltage VDD –0.3 2 V
Supply Voltage IOVDD –0.3 6 V
Boost Switching Pin SW –0.7 19 V
Class-D Output OUTP, OUTM –0.7 19 V
High Side Drive Regulator GREG –0.3 PVDD + 6 V
Digital Supply Regulator DREG –0.3 1.65 V
Digital IO Pins Digital pins referenced to IOVDD supply –0.3 6 V
Tstg Storage temperature –65 150 °C
(1) Operation outside the Absolute Maximum Ratings may cause permanent device damage. Absolute Maximum Ratings do not imply functional operation of the device at these or any other conditions beyond those listed under Recommended Operating Conditions. If used outside the Recommended Operating Conditions but within the Absolute Maximum Ratings, the device may not be fully functional, and this may affect device reliability, functionality, performance, and shorten the device lifetime.

 
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