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TPA2012D2RTJR

2.1-W, stereo, analog input Class-D audio amp with selectable gain

Manufacturer:

TI
Mfr.Part #:

TPA2012D2RTJR
Datasheet:

TPA2012D2RTJR Datasheet (PDF)
Audio input type:

Analog Input
Architecture:

Class-D
Speaker channels (max):

Stereo
Rating:

Catalog
EDA/CAD Models:

Request Free CAD Models for TPA2012D2RTJR

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TPA2012D2RTJR General Description

The TPA2012D2 is a stereo, filter-free, Class-D audio amplifier (Class-D amp) available in a DSBGA or WQFN package. The TPA2012D2 only requires two external components for operation.

The TPA2012D2 features independent shutdown controls for each channel. The gain can be selected to 6, 12, 18, or 24 dB using the G0 and G1 gain select pins. High PSRR and differential architecture provide increased immunity to noise and RF rectification. In addition to these features, a fast start-up time and small package size make the TPA2012D2 class-D amp an ideal choice for both cellular handsets and PDAs.

The TPA2012D2 is capable of driving 1.4 W/Ch at
5 V or 720 mW/Ch at 3.6 V into 8 Ω. The TPA2012D2 is also capable of driving 4 Ω. The TPA2012D2 is thermally limited in DSBGA and may not achieve
2.1 W/Ch for 4 Ω. The maximum output power in the DSBGA is determined by the ability of the circuit board to remove heat. Figure 33 shows thermally limited region of the DSBGA in relation to the WQFN package. The TPA2012D2 provides thermal and short-circuit protection.

Key Features

Output Power By Package:
- WQFN:
  - 2.1 W/Ch Into 4 Ω at 5 V
  - 1.4 W/Ch Into 8 Ω at 5 V
  - 720 mW/Ch Into 8 Ω at 3.6 V
- DSBGA:
  - 1.2 W/Ch Into 4 Ω at 5 V
    (Thermally Limited)
  - 1.3 W/Ch Into 8 Ω at 5 V
  - 720 mW/Ch Into 8 Ω at 3.6 V
Only Two External Components Required
Power Supply Range: 2.5 V to 5.5 V
Independent Shutdown Control for Each Channel
Selectable Gain of 6, 12, 18, and 24 dB
Internal Pulldown Resistor on Shutdown Pins
High PSRR: 77 dB at 217 Hz
Fast Start-Up Time (3.5 ms)
Low Supply Current
Low Shutdown Current
Short-Circuit and Thermal Protection
Space-Saving Packages
- 2.01-mm × 2.01-mm NanoFree™ DSBGA (YZH)
- 4-mm × 4-mm Thin WQFN (RTJ) With PowerPAD™

Specifications

Audio input type	Analog Input	Architecture	Class-D
Speaker channels (max)	Stereo	Rating	Catalog
Power stage supply (max) (V)	5.5	Power stage supply (min) (V)	2.5
Load (min) (Ω)	4	Output power (W)	2.1
SNR (dB)	95	THD + N at 1 kHz (%)	0.14
Iq (typ) (mA)	6	Control interface	GPIO
Closed/open loop	Open	Analog supply (min) (V)	2.5
Analog supply voltage (max) (V)	5.5	PSRR (dB)	71
Operating temperature range (°C)	-40 to 85