Datasheet

LM48511
www.ti.com SNAS416G –JULY 2007–REVISED MAY 2013
Electrical Characteristics V
DD
= 3.6V
(1)(2)(3)
(continued)
The following specifications apply for V
DD
= 3.6V, PV1 = 7V (continuous mode), A
V
= 2V/V, R
3
= 25.5kΩ, R
LS
= 5.36kΩ,
R
L
= 8Ω, f = 1kHz, SS/FF = GND, unless otherwise specified. Limits apply for T
A
= 25°C.
LM48511 Units
Symbol Parameter Conditions
(Limits)
Typical
(4)
Limit
(5)
R
L
= 8Ω, f = 1kHz, BW = 22kHz
THD+N = 1%
FF 2.5 W
SS 2.5 W
THD+N = 10%
FF 3.0 W
SS 3.0 W
P
O
Output Power
R
L
= 4Ω, f = 1kHz, BW = 22kHz
THD+N = 1%
FF 4.3 W
SS 4.2 W
THD+N = 10%
FF 5.4 W
SS 5.3 W
P
O
= 1.5W, f = 1kHz, R
L
= 8Ω
FF 0.03 %
SS 0.03 %
THD+N Total Harmonic Distortion + Noise
P
O
= 3W, f = 1kHz, R
L
= 4Ω
FF 0.04 %
SS 0.05 %
f = 20Hz to 20kHz
Inputs to AC GND, No weighting
FF 35 µV
RMS
SS 36 µV
RMS
ε
OS
Output Noise
f = 20Hz to 20kHz
Inputs to AC GND, A weighted
FF 25 µV
RMS
SS 26 µV
RMS
V
RIPPLE
= 200mV
P-P
Sine,
f
RIPPLE =
= 217Hz
FF 85 dB
SS 86 dB
V
RIPPLE
= 200mV
P-P
Sine,
Power Supply Rejection Ratio f
RIPPLE =
= 1kHz
PSRR
(Input Referred) FF 87 dB
SS 86 dB
V
RIPPLE
= 200mV
P-P
Sine,
f
RIPPLE =
= 10kHz
FF 78 dB
SS 77 dB
Common Mode Rejection Ratio V
RIPPLE
= 1V
P-P
, f
RIPPLE
= 217Hz
CMRR 73 dB
(Input Referred)
η Efficiency f = 1kHz, R
L
= 8Ω, P
O
= 1W 77 %
V
FB
Feedback Pin Reference Voltage
(8)
1.23 V
(8) Feedback pin reference voltage is measured with the Audio Amplifier disconnected from the Boost converter (the Boost converter is
unloaded).
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