Overview
The TPA6132A2RTER is a 25-mW DirectPath™ stereo headphone amplifier produced by Texas Instruments. This device is designed to eliminate the need for external DC-blocking output capacitors and features built-in pop suppression circuitry to prevent noise during turn-on and turn-off. It operates from a single 2.3 V to 5.5 V supply and is known for its high power supply noise rejection and differential architecture, which enhances RF noise immunity.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | 2.3 | 5.5 | V | ||
| Supply Current (No Load) | VDD = 2.3 V to 5.5 V, EN = VDD | 2.1 | 3.1 | 3.2 | mA |
| Shutdown Current | EN = 0 V, VDD = 2.3 V to 5.5 V | 0.7 | 1.2 | μA | |
| Output Power (Per Channel) | VDD = 3.6 V, RL = 16 Ω | 25 | mW | ||
| Power Supply Rejection Ratio (PSRR) | VDD = 2.3 V to 5.5 V, 217 Hz | 100 | dB | ||
| Gain Settings | G0 and G1 Pins | –6 dB, 0 dB, 3 dB, 6 dB | |||
| Package Type | WQFN-16 | ||||
| Package Size | 3 mm x 3 mm |
Key Features
- No need for external DC-blocking output capacitors
- Built-in pop suppression circuitry to eliminate turn-on and turn-off noise
- Differential stereo inputs to reduce system noise pickup
- Built-in resistors to set device gain, reducing external component count
- High power supply noise rejection (100 dB at 217 Hz, 90 dB at 10 kHz)
- Short-circuit and thermal-overload protection for the amplifier outputs
- ±8 kV HBM ESD protected outputs
- Four gain settings controlled by G0 and G1 pins: –6 dB, 0 dB, 3 dB, and 6 dB
- Shutdown mode reduces supply current to less than 1 μA
Applications
- Smart Phones / Cellular Phones
- Notebook Computers
- CD / MP3 Players
- Portable Gaming Devices
Q & A
- What is the operating voltage range of the TPA6132A2RTER?
The TPA6132A2RTER operates from a single 2.3 V to 5.5 V supply.
- Does the TPA6132A2RTER require external DC-blocking capacitors?
No, the TPA6132A2RTER eliminates the need for external DC-blocking output capacitors.
- What are the gain settings available for the TPA6132A2RTER?
The gain settings are –6 dB, 0 dB, 3 dB, and 6 dB, controlled by the G0 and G1 pins.
- What is the typical supply current of the TPA6132A2RTER?
The typical supply current is 2.1 mA to 3.2 mA depending on the supply voltage.
- What kind of protection does the TPA6132A2RTER have?
The device has short-circuit and thermal-overload protection for the amplifier outputs).
- What is the power supply noise rejection ratio (PSRR) of the TPA6132A2RTER?
The PSRR is 100 dB at 217 Hz and 90 dB at 10 kHz).
- What is the output power per channel of the TPA6132A2RTER?
The output power per channel is 25 mW into a 16 Ω load).
- What is the package type and size of the TPA6132A2RTER?
The package type is WQFN-16 and the size is 3 mm x 3 mm).
- What are some common applications of the TPA6132A2RTER?
Common applications include smart phones, notebook computers, CD/MP3 players, and portable gaming devices).
- How does the TPA6132A2RTER protect against ESD?
The device has ±8 kV HBM ESD protected outputs).
