FAB2200 Datasheet, PDF (7/33 Pages) Fairchild Semiconductor – Audio Subsystem with Stereo Class-G Headphone Amplifier and 1.2W Mono Class-D Speaker Amplifier

Electrical Characteristics (Continued)
Unless otherwise noted: HPA uses stereo single-ended inputs, SPA uses differential input, unused inputs AC are
grounded, f_IN = 1KHz, AGC off, PGAINxx = 0dB, HPxVOL = 0dB, PRESENTGAIN = 6dB, ERC = 1, SSMT = 000,
SHDNB = 1, SDB = 1.8V, SDA and SCL pull-up voltage = 1.8V, Z_SPK = 8Ω+68µH, R_HP = 32Ω, speaker amplifier and
headphone amplifier on. Typical values are at V_BATT = 3.7V, T_A = 25°C. Minimum and maximum values are at V_BATT =
2.80V to 5.25V, T_A = -40°C to 85°C.
Symbol
Parameter
Conditions
Headphone Amplifiers
I_VBATT Supply Current
V_OS Output Offset Voltage
K_CP Click-and-Pop Level
PSRR
Power-Supply Rejection
Ratio
P_OUT Output Power
THD+N
Total Harmonic
Distortion Plus Noise
SNR Signal-to-Noise Ratio
C_L
X_TALK
Output Noise
Capacitive Drive
Crosstalk
P_OUT = 2x50µW
into 32Ω
IN1 and IN2 On,
IN3 and IN4 Off, DIFFIN43=1,
Speaker Amplifier Off
P_OUT = 2x250µW
into 32Ω
P_OUT = 2x500µW
into 32Ω
HPxVOL = Mute
Peak Voltage, A-Weighted,
32 Samples per Second,
HPxVOL = Mute,
Inputs AC Grounded
Into Shutdown
Out of Shutdown
VBATT = 2.8V to
5.25V
Inputs AC Grounded
f = 217Hz,
VRIPPLE =
200mVPP
f = 1KHz, VRIPPLE
= 200mVPP
THD+N < 1%
RHP = 16
RHP = 32
HPxVOL = 4dB
THD+N < 10%
RHP = 32
HPxVOL = 6dB
RHP = 32, POUT = 20mW
RHP = 16, POUT = 10mW
A-Weighted, POUT = 32mW,
Speaker Amplifier Off
HPxVOL = 4dB
DIFFINxx = 0
(Single-Ended)
DIFFINxx = 1
(Differential)
A-Weighted, POUT = 32mW,
Speaker Amplifier On
HPxVOL = 4dB
DIFFINxx = 0
(Single-Ended)
DIFFINxx = 1
(Differential)
A-Weighted, Speaker Amplifier Off, DIFFINxx = 0
HPL to HPR, HPR to HPL, PO = 15mW
f_P Charge-Pump Frequency
A_V
Headphone Gain
Accuracy
Channel-to-Channel
Gain Tracking
Channel-to-Channel
Gain Tracking
Mute Attenuation
Across All Gain Stages
HPL to HPR, HPxVOL = 0dB
HPL to HPR Across Entire Pre-Amplifier and
Volume Range
Min.
27
95
Typ. Max.
4.4
5.8
6.8
±0.15
-70
-70
95
95
95
39
31
41
0.010 0.075
0.020
100
100
100
103
6.5
100
-85
1.3
±0.4
±0.3
±1
100
Unit
mA
mV
dBV
dB
mW
%
dB
µVRMS
pF
dB
MHz
dB
%
%
dB
© 2009 Fairchild Semiconductor Corporation
FAB2200 • Rev. 1.0.1
7
www.fairchildsemi.com