SA58670BS中文资料2.1 W/channel stereo class-D audio amplifier数据手册恩XP规格书

描述 Description

Overview The SA58670 is a stereo, filter-free class-D audio amplifier which is available in an HVQFN20 package with the exposed Die Attach Paddle (DAP).
The SA58670 features independent shutdown controls for each channel. The gain may be set at 6 dB, 12 dB, 18 dB or 24 dB with gain select pins G0 and G1. Improved immunity to noise and RF rectification is increased by high PSRR and differential circuit topology. Fast start-up time and small package makes it an ideal choice for both cellular handsets and PDAs.
The SA58670 delivers 1.4 W/channel at 5.0 V and 720 mW/channel at 3.6 V into 8 Ω. It delivers 2.1 W/channel at 5.0 V into 4 Ω. The maximum power efficiency is excellent at 70 pct to 74 pct into 4 Ω and 84 pct to 88 pct into 8 Ω. The SA58670 provides thermal and short-circuit shutdown protection.

特性 Features

Output power: 2.1 W/channel into 4 Ω at 5.0 V
1.4 W/channel into 8 Ω at 5.0 V
720 mW/channel into 8 Ω at 3.6 V

Supply voltage: 2.5 V to 5.5 V
Independent shutdown control for each channel
Selectable gain: 6 dB, 12 dB, 18 dB and 24 dB
High SVRR: -77 dB at 217 Hz
Fast start-up time: 3.5 ms
Low supply current
Low shutdown current
Short-circuit and thermal protection
Space savings with 4 mm x 4 mm HVQFN20 package
Low junction to ambient thermal resistance of 24 K/W with exposed DAP

应用 Application

Wireless and cellular handset and PDA
Portable DVD player
USB speaker
Notebook PC
Portable radio and gaming
Educational toy