FAB2200 Datasheet, PDF (6/33 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
Speaker Amplifier
VOS Output Offset Voltage
KCP Click-and-Pop Level
PSRR
Power-Supply Rejection
Ratio
POUT
Output Power
THD+N
Total Harmonic
Distortion Plus Noise
SNR Signal-to-Noise Ratio
Vn
Output Noise
Output Frequency
IOUT Output Current Limit
Efficiency
Mute Attenuation
Conditions
PRESENTGAIN = Mute
PRESENTGAIN = 6dB
Peak Voltage,
Into Shutdown
A-Weighted,
32 Samples per Second,
PRESENTGAIN = Mute, ^{Out of Shutdown}
Inputs AC Grounded
VBATT = 2.8V to
5.25V
Inputs AC Grounded
f = 217Hz,
100mVPP Ripple
f = 1kHz,
100mVPP Ripple
THD+N < 1%, ERC Disabled, SSMT = 100,
VBATT = 4.2V
THD+N < 10%, ERC Disabled, SSMT =
100, VBATT = 4.2V
THD+N < 10%, ERC Disabled,
SSMT = 100, VBATT = 3.7V
THD+N < 10%, ERC Enabled, SSMT = 000,
VBATT = 3.7V
THD+N < 1%, ERC
Enabled, SSMT = 000
VBATT = 4.2V
VBATT = 3.7V
POUT = 350mW
A-Weighted, POUT =
720mW, Headphone
Amplifiers Off
DIFFINxx = 0
(Single-Ended)
DIFFINxx = 1
(Differential)
A-Weighted, POUT =
720mW, Headphone
Amplifiers On
DIFFINxx = 0
(Single-Ended)
DIFFINxx = 1
(Differential)
A-Weighted, Headphone Amps Off,
DIFFINxx = 0, Inputs AC Grounded
Spread Spectrum, SSMT = 000
Fixed Frequency, SSMT = 100
POUT = 720mW, f = 1kHz
Min.
930
90
Typ. Max. Unit
±0.5
mV
±2.5
-70
dBV
-70
74
77
dB
75
970
1200
930
mW
945
975
750
0.030 0.075 %
97
97
dB
97
97
32
µVRMS
330
KHz
330
1.3
A
90
%
100
dB
Continued on the following page…
© 2009 Fairchild Semiconductor Corporation
FAB2200 • Rev. 1.0.1
6
www.fairchildsemi.com