Overview
The NCP2890, produced by onsemi, is a highly efficient audio power amplifier designed for portable communication devices such as mobile phones. This device is capable of delivering 1.0 W of continuous average power to an 8.0 Ω BTL load from a 5.0 V power supply and 320 mW to a 4.0 Ω BTL load from a 2.6 V power supply. It is known for its high-quality audio output, low power consumption, and minimal external component requirements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (Vp) | 2.2 to 5.5 | V |
| Maximum Output Power (RL = 8 Ω, Vp = 5.0 V) | 1.0 | W |
| Maximum Output Power (RL = 4 Ω, Vp = 2.6 V) | 320 mW | mW |
| Supply Quiescent Current (Vp = 2.6 V, No Load) | 1.5 to 1.7 | mA |
| Supply Quiescent Current (Vp = 5.0 V, No Load) | 1.7 to 1.9 | mA |
| Shutdown Current (ISD) | 10 to 600 nA | nA |
| Operating Ambient Temperature (TA) | -40 to +85 | °C |
| Maximum Junction Temperature (TJ) | 150 | °C |
| Thermal Shutdown Temperature (Tsd) | 140 to 180 | °C |
| Total Harmonic Distortion (THD) at 1 kHz | 0.02% to 0.04% | % |
| Signal-to-Noise Ratio (SNR) | 77 to 84 dB | dB |
| Positive Supply Rejection Ratio (PSRR) | -64 to -75 dB | dB |
Key Features
- High-quality audio output with minimal external components.
- Low power consumption and ultra-low current shutdown mode.
- “Pop and click” noise protection circuitry during turn-on and turn-off transitions.
- External gain configuration capability using resistors.
- External turn-on time configuration capability using a bypass capacitor.
- Up to 1.0 nF capacitive load driving capability.
- Thermal overload protection circuitry.
- Excellent PSRR, allowing direct connection to the battery.
- Available in 9-Pin Flip-Chip CSP and Micro8 packages.
Applications
The NCP2890 is primarily designed for portable communication devices such as mobile phones, but it can also be used in other portable audio applications where high-quality audio and low power consumption are critical.
- Mobile phones and smartphones.
- Portable audio players and speakers.
- Handheld gaming devices.
- Other battery-powered audio devices.
Q & A
- What is the maximum output power of the NCP2890 at 5.0 V supply voltage?
The NCP2890 can deliver up to 1.0 W of continuous average power to an 8.0 Ω BTL load from a 5.0 V power supply.
- What is the shutdown current of the NCP2890?
The shutdown current (ISD) of the NCP2890 is between 10 nA and 600 nA.
- What is the operating ambient temperature range for the NCP2890?
The operating ambient temperature range for the NCP2890 is -40°C to +85°C.
- Does the NCP2890 have thermal protection?
- How does the NCP2890 prevent “pop and click” noise?
The NCP2890 contains circuitry to prevent “pop and click” noise during turn-on and turn-off transitions.
- What is the signal-to-noise ratio (SNR) of the NCP2890?
The signal-to-noise ratio (SNR) of the NCP2890 is between 77 dB and 84 dB.
- Can the NCP2890 be directly connected to the battery?
- What are the available package options for the NCP2890?
The NCP2890 is available in 9-Pin Flip-Chip CSP and Micro8 packages.
- How is the gain of the NCP2890 configured?
The gain of the NCP2890 can be configured externally using resistors.
- What is the typical thermal shutdown temperature of the NCP2890?
The typical thermal shutdown temperature of the NCP2890 is 160°C.
