TFA9882UK数据手册恩XP中文资料规格书

描述 Description

The TFA9882 is a mono, filter-free class-D audio amplifier in a 9-bump WLCSP (Wafer Level Chip-Size Package) with a 400 µm pitch.
It receives audio and control settings via an I²S digital interface. The Power-down to Operating mode transition is triggered when a clock signal is detected on the bit clock input (BCK). Two devices can be combined to build a stereo application.
In stereo applications, the left or right I²S audio stream is selected by connecting the word select signal to, respectively, pin WSL or pin WSR. Mono mixing can be achieved by connecting the word select signal to both WSL and WSR. Switching off the word select signal selects Mute mode.
The device features low RF susceptibility because it has a digital input interface that is insensitive to clock jitter. The second order closed loop architecture used in the TFA9882 provides excellent audio performance and high supply voltage ripple rejection.

特性 Features

Small outline WLCSP9 package: 1.27 × 1.49 × 0.6 mm
Wide supply voltage range (fully operational from 2.5 V to 5.5 V)
High efficiency (90 %, 4 Ω/20 μH load) and low power dissipation
Quiescent power: 6.5 mW (VDDD = 1.8 V, VDDP = 3.6 V, 4 Ω/20 μH load, fs= 32 kHz)
7.65 mW (VDDD = 1.8 V, VDDP = 3.6 V, 4 Ω/20 μH load, fs = 48 kHz)
Output power: 1.4 W into 4 Ω at 3.6 V supply (THD = 1 %)
2.7 W into 4 Ω at 5.0 V supply (THD = 1 %)
3.4 W into 4 Ω at 5.0 V supply (THD = 10 %)
Output noise voltage: 24 μV (A-weighted)
Signal-to-noise ratio: 103 dB (VDDP = 5 V, A-weighted)
Fully short-circuit proof across load and to supply lines
Current limiting to avoid audio holes
Thermally protected
Undervoltage and overvoltage protection
High-pass filter for DC blocking
Simplified interface for audio and control settings
Left/right selection and mono mixing
Three gain settings: -3 dB, 0 dB and +3 dB
Output slope setting for EMI reduction
Clip control for smooth clipping
Mute mode
Low RF susceptibility
Insensitive to input clock jitter
‘Pop noise‘ free at all mode transitions
Short power-up time: 4 ms
Short power-down time: 5 μs
1.8 V/3.3 V tolerant digital inputs
Only two external components required

应用 Application

PDAs
Mobile phones
Portable gaming devices
Portable Navigation Devices (PND)
Notebooks/netbooks
Portable media players