FAB2210 Datasheet, PDF (1/35 Pages) Fairchild Semiconductor – Audio Subsystem with Class-G Headphone and 3.3W Mono Class-D Speaker with Dynamic Range Compression

April 2012
FAB2210 — Audio Subsystem with Class-G Headphone and
3.3W Mono Class-D Speaker with Dynamic Range Compression
Features
 High-Efficiency Stereo Class-G Headphone
- 100dB SNR Headphone Amplifier
- Capacitor-Free Outputs for High-Frequency
Response
 Mono Filterless Class-D Speaker Amplifier
- 91% Efficiency for Extended Battery Runtime
- DRC for Louder SPL and Speaker Protection
- 3.3W into 4Ω at 5.0V, THD+N < 10%
- 1.27W into 8Ω at 4.2V, THD+N < 10%
- Low EMI Edge-Rate Controlled output
- 97dB Signal-to-Noise Ratio (SNR)
 Click and Pop Suppression
 Selectable Single-Ended or Differential Audio
Inputs for High Common-Mode Rejection
 High Power Supply Rejection Ration (PSRR)
Rejects 217Hz GSM Noise
 Highly Configurable using I²C Control
 Low-Power, Software Standby Mode
Description
The FAB2210 combines a Class-G stereo capacitor-
free headphone amplifier with a mono Class-D
speaker amplifier into one IC package.
The headphone and speaker amplifiers incorporate
Class-G and Class-D topologies, respectively, for low
power dissipation, which extends battery runtime.
The Class-G headphone amplifier incorporates an
integrated charge pump that generates a negative
supply rail for ground-centered headphone outputs.
The Class-D amplifier includes programmable
Dynamic Range Compression (DRC) that maximizes
Sound Pressure Level (SPL) for maximum loudness,
while protecting the speaker from damage.
The noise gate can automatically mute the speaker or
headphone amplifiers to reduce noise when input
signals are LOW.
Ordering Information
Part Number Operating Temperature Range
Package
FAB2210UCX
-40°C to +85°C
20-Bump, Wafer-Level Chip-Scale
Package (WLCSP), 0.4mm Pitch
Typical Application Circuit
2.8V – 5.25V 1.6V – 2.8V
10µF 2.2µF
2.2µF 2.2µF
2.2µF
2.2µF
Packing Method
3000 Units on
Tape & Reel
SCL
SDA
I2C
0.1µF
INA1
0.1µF
INA2
0.1µF
INB1
0.1µF
INB2
Preamp A
-3dB to 18dB
Mixer/
MUX
Preamp B
-3dB to 18dB
Headphone
Volume
Charge
Pump
Class-G Cap-Free
Headphone Amps
HOUTL
Noise
Gate
0dB / 1.5dB /
3dB / 6dB
-64dB to 0dB
Speaker Volume
Class-D Speaker
Amp
-64dB to 0dB
Noise
Gate /
DRC
16dB/20dB/24dB
HOUTR
HSENSE
SOUT+
SOUT-
© 2011 Fairchild Semiconductor Corporation
FAB2210 • Rev. 1.1.1
Figure 1. Typical Application Circuit
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