Overview
The NCP2811ADTBR2G, produced by onsemi, is a dual audio power amplifier designed specifically for portable communication devices such as mobile phones. This component features a True Ground architecture, which eliminates the need for external heavy coupling capacitors, thereby saving space and reducing costs. The NCP2811 is capable of delivering 27 mW of continuous average power into a 16 Ω load from a 2.7 V power supply with a Total Harmonic Distortion plus Noise (THD+N) of 1%.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operational Power Supply | VP | 2.7 | 5.0 | V | |
| Supply Quiescent Current | IDD | 6.0 | mA | ||
| Shutdown Current | ISD | 1 | μA | ||
| Output Offset Voltage | VOS | ±1 | mV | ||
| High-Level Input Voltage SD Pin | VIH | 1.2 | V | ||
| Low-Level Input Voltage SD Pin | VIL | 0.4 | V | ||
| Operating Ambient Temperature Range | TA | −40 | 85 | °C | |
| Operating Junction Temperature Range | TJ | −40 | 125 | °C | |
| Maximum Junction Temperature | TJMAX | 150 | °C |
Key Features
- True Ground Architecture: Eliminates the need for external heavy coupling capacitors, saving space and reducing costs.
- High Fidelity Audio: Offers superior −100 dB Power Supply Rejection Ratio (PSRR) and a low noise floor, ensuring high-quality audio output.
- Adjustable Gain: Available in versions with external adjustable gain (A version) or internal gain of −1.5 V/V (B version).
- Protection Circuits: Includes short circuit protection, thermal shutdown, and under-voltage lockout (UVLO) to ensure device reliability.
- Pop and Click Suppression: Special circuitry to eliminate pop and click noise during turn-on and turn-off).
Applications
The NCP2811ADTBR2G is primarily designed for use in portable communication devices such as mobile phones, tablets, and other handheld audio devices. It is also suitable for use in other battery-powered audio equipment where high-quality audio output and low power consumption are critical).
Q & A
- What is the maximum power output of the NCP2811ADTBR2G?
The NCP2811ADTBR2G can deliver up to 27 mW of continuous average power into a 16 Ω load from a 2.7 V power supply.
- What is the THD+N of the NCP2811ADTBR2G at maximum power output?
The THD+N is 1% at maximum power output.
- What are the key benefits of the True Ground architecture in the NCP2811ADTBR2G?
The True Ground architecture eliminates the need for external heavy coupling capacitors, saving space and reducing costs).
- How does the gain of the NCP2811ADTBR2G get adjusted?
The gain can be adjusted externally using resistors in the A version, or it is fixed at −1.5 V/V in the B version).
- What protection circuits are included in the NCP2811ADTBR2G?
The device includes short circuit protection, thermal shutdown, and under-voltage lockout (UVLO)).
- How does the NCP2811ADTBR2G handle pop and click noise?
The device includes special circuitry to eliminate pop and click noise during turn-on and turn-off).
- What is the operating temperature range of the NCP2811ADTBR2G?
The operating ambient temperature range is −40°C to +85°C, and the operating junction temperature range is −40°C to +125°C.
- What is the maximum junction temperature of the NCP2811ADTBR2G?
The maximum junction temperature is +150°C.
- What are the typical applications of the NCP2811ADTBR2G?
The device is primarily used in portable communication devices such as mobile phones, tablets, and other handheld audio devices).
- What are the available package options for the NCP2811ADTBR2G?
The device is available in TSSOP-14, Flip-Chip 12, and WQFN12 packages.
