FAB2200 Datasheet, PDF (5/33 Pages) Fairchild Semiconductor – Audio Subsystem with Stereo Class-G Headphone Amplifier and 1.2W Mono Class-D Speaker Amplifier

Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
T_A
V_BATT
Parameter
Operating Temperature Range
Supply Voltage Range
Min.
-40
2.80
Max.
+85
5.25
Unit
°C
V
Electrical Characteristics
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 =
2.8V to 5.25V, T_A = -40°C to 85°C.
Symbol
Parameter
Conditions
Headphone Amplifiers Enabled,
Speaker Amplifier Disabled,
DIFFIN43=1
I_DD
Quiescent Supply Current
(Z_SPK = Open)
Headphone Amplifiers Disabled,
Speaker Amplifier Enabled,
DIFFIN21=1
Headphone and Speaker Amplifiers
Enabled
I_SD
Shutdown Current
SHDNB = 0, SDB = 1.8V
SHDNB = 1, SDB = GND
t_ON
Turn-On Time
Time from Shutdown to Full Speaker
and Headphone Operation, ZCD and
Ramps Disabled
RIN
Input Resistance
PGAINxx = 0dB
PGAINxx = 12dB
Maximum Input Signal Swing PGAINxx = 0dB
(VBATT = 2.8V to 5.25V,
Single-Ended Input)
PGAINxx = 12dB
Analog Bypass Switch
RON On Resistance
THD Total Harmonic Distortion
IBYPOUTx = 20mA,
BYPx = 0V and
VBATT, BYPEN = 1
VDIF = 2VPP, VCM=
VBATT/2, f = 1kHz,
BYPEN = 1,
Load = 8
TA = 25°C
Series
Resistance is
10Ω per
Switch
No Series
Resistors
IOFF
Off Isolation
BYPEN = 0, 10KHz 1VRMS Sine
Wave Applied Across BYPOUT1 and
BYPOUT2, BYPIN1 and BYPIN2 to
GND = 50Ω
Min.
Typ.
3.5
4.7
6.2
2.2
2.2
1.25
21.0
8.5
2.300
0.575
0.05
0.10
94
Max.
1
0.25
Unit
mA
µA
ms
KΩ
Vpk-pk
Ω
%
dB
Continued on the following page…
© 2009 Fairchild Semiconductor Corporation
FAB2200 • Rev. 1.0.1
5
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