TPA2054D4A

現行

具 145-mW 耳機放大器和 3:1 多工器的 1.4-W、立體聲道、類比輸入 D 類音訊放大器

立即訂購

產品規格表

document-pdfAcrobat 1.4 W/CH Stereo Class-D Audio Subsystem with DirectPath™ Headphone Amp datasheet (英文)

TPA2054D4A

現行

產品規格表

立即訂購

產品詳細資料

Audio input type

Analog Input

Architecture

Class-D

Speaker channels (max)

Stereo

Control interface

I2C

Output power (W)

2.4

Power stage supply (max) (V)

5.5

Power stage supply (min) (V)

2.5

THD + N at 1 kHz (%)

0.18

Load (min) (Ω)

8

Analog supply voltage (min) (V)

2.5

Analog supply voltage (max) (V)

5.5

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Audio input type

Analog Input

Architecture

Class-D

Speaker channels (max)

Stereo

Control interface

I2C

Output power (W)

2.4

Power stage supply (max) (V)

5.5

Power stage supply (min) (V)

2.5

THD + N at 1 kHz (%)

0.18

Load (min) (Ω)

8

Analog supply voltage (min) (V)

2.5

Analog supply voltage (max) (V)

5.5

Rating

Catalog

Operating temperature range (°C)

-40 to 85

DSBGA (YZK)

25

7.5625 mm² (— mm × — mm)

Stereo Class-D Amp:
- 1.4 W into 8 from 5.0 V (10% THD + N)
- 1.25 W into 8 from 5.0 V (1% THD + N)
DirectPath™ Stereo Headphone Amplifier
- No Output Capacitors Required
Independent Gain Select for Headphone Amplifier
Eight Programmable Maximum Headphone Voltage Limits
Two Single-Ended or One Differential Stereo Input
3:1 Input MUX with Mode Control
32-Step Volume Control for Both Input Channels
Independent Shutdown for Headphone and Class-D Amplifiers
Short-Circuit and Thermal-Overload Protection
±8 kV HBM ESD Protection on Headphone Outputs
I²C™ Interface
25-Ball 2,61 mm × 2,61 mm WCSP
APPLICATIONS
- Smart Phones / Cellular Phones
- Laptop Computers
- Portable Gaming
- Portable Media Players

DirectPath is a trademark of Texas Instruments.
I2C is a trademark of NXP Semiconductors.

Stereo Class-D Amp:
- 1.4 W into 8 from 5.0 V (10% THD + N)
- 1.25 W into 8 from 5.0 V (1% THD + N)
DirectPath™ Stereo Headphone Amplifier
- No Output Capacitors Required
Independent Gain Select for Headphone Amplifier
Eight Programmable Maximum Headphone Voltage Limits
Two Single-Ended or One Differential Stereo Input
3:1 Input MUX with Mode Control
32-Step Volume Control for Both Input Channels
Independent Shutdown for Headphone and Class-D Amplifiers
Short-Circuit and Thermal-Overload Protection
±8 kV HBM ESD Protection on Headphone Outputs
I²C™ Interface
25-Ball 2,61 mm × 2,61 mm WCSP
APPLICATIONS
- Smart Phones / Cellular Phones
- Laptop Computers
- Portable Gaming
- Portable Media Players

DirectPath is a trademark of Texas Instruments.
I2C is a trademark of NXP Semiconductors.

The TPA2054D4A features a stereo Class-D power amplifier along with a stereo DirectPath™ headphone amplifier. The TPA2054D4A has a mono differential input and two stereo single-ended (SE) inputs that can be configured as one stereo differential input. Both input channels have a 32-step volume control and the DirectPath headphone amplifier has a 4-level gain control for coarse volume adjustment. All amplifiers have output short-circuit and thermal- overload protection.

The Class-D amplifiers deliver 1.25 W into 8 at 1% THD from a 5.0 V supply, and 700 mW from 3.6 V. The DirectPath headphone amplifier features an output voltage limiter to reduce the maximum output power to one of seven possible limits. The voltage limiter is programmed through the I²C interface.

DirectPath eliminates the need for external DC- blocking output capacitors to the headphones. The built-in charge pump creates a negative supply voltage for the headphone amplifier, allowing a 0 V DC bias at the output.

The DirectPath headphone amplifier gains are +6 dB (default), 0 dB, –6 dB, and –14 dB, selected through the I2C interface. This allows the headphone volume to be different from the loudspeaker volume if both are used simultaneously.

The TPA2054D4A has a 3:1 input MUX for audio source selection. Mode and gain controls operate from a 1.7 V to 3.6 V compatible I²C interface.

The voltage supply range for both the Class-D amplifiers and the headphone charge pump is 2.5 V to 5.5 V. The Class-D amplifiers use a combined 7 mA and the headphone amplifier uses 10 mA of typical quiescent current.

Total supply current in shutdown reduces to less than 4 µA. Undervoltage lockout keeps supply current to less than 4 µA when the supply voltage is less than 2.1 V.

The TPA2054D4AYZK is available in a 25-ball 2,61 mm × 2,61 mm WCSP package.