Datasheet

LM4671
www.ti.com SNAS258D –MARCH 2005–REVISED MAY 2013
Electrical Characteristics
(1)(2)
(continued)
The following specifications apply for A
V
= 2V/V (R
I
= 150kΩ), R
L
= 15µH + 8Ω + 15µH unless otherwise specified. Limits
apply for T
A
= 25°C.
LM4671
Units
Symbol Parameter Conditions
(Limits)
Typical
(3)
Limit
(4) (5)
V
DD
= 3.6V, 5V
V
Ripple
= 200mV
PP
Sine,
61.8 dB
f
Ripple
= 217Hz
Inputs to AC GND, C
I
= 2μF
V
DD
= 3.6V, 5V
V
Ripple
= 200mV
PP
Sine,
59.8 dB
f
Ripple
= 1kHz
Inputs to AC GND, C
I
= 2μF
PSRR Power Supply Rejection Ratio
V
DD
= 3.6V, 5V
V
Ripple
= 200mV
PP
Sine,
48.7 dB
f
Ripple
= 10kHz
Inputs to AC GND, C
I
= 2μF
V
DD
= 3.6V, 5V
V
Ripple
= 200mV
PP
Sine,
65.7 dB
f
Ripple
= 217Hz
f
IN
= 1kHz, P
O
= 10mW
RMS
SNR Signal to Noise Ratio V
DD
= 5V, P
O
= 1W
RMS
93 dB
V
DD
= 3.6V, f = 20Hz – 20kHz
Inputs to AC GND, C
I
= 2μF 58 μV
RMS
No Weighting
ε
OUT
Output Noise
V
DD
= 3.6V, Inputs to AC GND
38 μV
RMS
C
I
= 2μF, A Weighted
V
DD
= 3.6V, V
Ripple
= 1V
PP
Sine
CMRR Common Mode Rejection Ratio 68.3 dB
f
Ripple
= 217Hz
T
WU
Wake-up Time V
DD
= 3.6V 17 49 μs (max)
T
SD
Shutdown Time 140 μs
External Components Description
(Figure 1)
Components Functional Description
1. C
S
Supply bypass capacitor which provides power supply filtering. Refer to POWER SUPPLY BYPASSING for
information concerning proper placement and selection of the supply bypass capacitor.
2. C
I
Input AC coupling capacitor which blocks the DC voltage at the amplifier's input terminals.
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