Overview
The NCV2820MUTBG is a cost-effective mono Class-D audio power amplifier produced by onsemi. This device is capable of delivering 2.65 W of continuous average power to a 4 Ω Bridge Tied Load (BTL) from a 5 V supply, and 1.4 W to an 8 Ω BTL load with less than 1% Total Harmonic Distortion plus Noise (THD+N). The amplifier features a pulse width modulation technique that reduces output noise and THD compared to conventional sigma-delta modulators. It is designed for space and cost savings in applications such as cellular handsets, PDAs, and other portable electronic devices, as it does not require an output filter when using inductive transducers. The device boasts high efficiency of over 90% and a very low shutdown current, which extends battery life and reduces junction temperature.
Key Specifications
| Characteristic | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Supply Voltage | TA = −40°C to +85°C | 2.5 | - | 5.5 | V |
| Supply Quiescent Current | Vp = 3.6 V, RL = 8.0 Ω, No Load | - | 2.15 | 4.6 | mA |
| Shutdown Current | Vp = 4.2 V, TA = +25°C | - | 0.42 | 0.8 | μA |
| Max Output Current | - | - | 1.5 | A | |
| Operating Ambient Temperature | - | -40 | - | 85 | °C |
| Max Junction Temperature | - | - | - | 150 | °C |
| Switching Frequency | Vp from 2.5 V to 5.5 V | 190 | 250 | 310 | kHz |
| Total Harmonic Distortion + Noise (THD+N) | Vp = 5.0 V, RL = 8.0 Ω, f = 1.0 kHz, Pout = 0.25 W | - | 0.05 | - | % |
| Efficiency | RL = 8.0 Ω, f = 1.0 kHz, Vp = 5.0 V, Pout = 1.2 W | - | 91 | - | % |
Key Features
- Optimized PWM Output Stage: Filterless capability, reducing the need for external output filters when using inductive transducers.
- High Efficiency: Up to 90% efficiency, which helps in extending battery life and reducing junction temperature.
- Low Quiescent Current: Typical quiescent current of 2.15 mA, contributing to power savings.
- Independent Gain Configuration: Allows independent gain while summing signals from various audio sources.
- Pop and Click Noise Protection: Internal circuitry to protect against pop and click noises during power-on and power-off.
- AEC-Q100 Qualified: Suitable for automotive and other applications requiring unique site and control change requirements).
- Low Noise Floor: A-weighted noise floor of 42 μV, ensuring clean audio output).
Applications
- Cellular Phones: Ideal for driving earpieces, loudspeakers, and melody ringers in cellular handsets).
- Portable Electronic Devices: Suitable for PDAs, smartphones, and other portable devices requiring efficient audio amplification).
- Portable Computers: Can be used in portable computers and other mobile devices).
Q & A
- What is the maximum output power of the NCV2820MUTBG?
The NCV2820MUTBG can deliver up to 2.65 W of continuous average power to a 4 Ω BTL load from a 5 V supply.
- What is the typical quiescent current of the NCV2820MUTBG?
The typical quiescent current is 2.15 mA at Vp = 3.6 V and RL = 8.0 Ω with no load.
- What is the switching frequency of the NCV2820MUTBG?
The switching frequency ranges from 190 kHz to 310 kHz.
- Does the NCV2820MUTBG require an output filter?
No, it does not require an output filter when using inductive transducers, which saves space and cost.
- What is the efficiency of the NCV2820MUTBG?
The efficiency is up to 90% under certain conditions, such as RL = 8.0 Ω, f = 1.0 kHz, and Vp = 5.0 V with Pout = 1.2 W.
- What is the maximum junction temperature of the NCV2820MUTBG?
The maximum junction temperature is 150°C.
- Is the NCV2820MUTBG AEC-Q100 qualified?
Yes, it is AEC-Q100 qualified, making it suitable for automotive and other applications requiring unique site and control change requirements.
- What is the noise floor of the NCV2820MUTBG?
The A-weighted noise floor is 42 μV, ensuring clean audio output.
- What are the typical applications of the NCV2820MUTBG?
Typical applications include cellular phones, PDAs, smartphones, and portable computers.
- What is the package type of the NCV2820MUTBG?
The package type is 8-UDFN (2x2.2 mm).
- Is the NCV2820MUTBG RoHS compliant?
Yes, it is RoHS compliant.
