Datasheet

LM4667, LM4667MMBD
www.ti.com SNAS165C –SEPTEMBER 2003–REVISED MAY 2013
Electrical Characteristics V
DD
= 3V
(1)(2)
The following specifications apply for V
DD
= 3V and R
L
= 15µH + 8Ω + 15µH unless otherwise specified. Limits apply for T
A
=
25°C.
LM4667
Units
Parameter Test Conditions
(Limits)
Typ
(3)
Limit
(4)(5)
I
DD
Quiescent Power Supply Current V
IN
= 0V, No Load 3.50
5.0 mA (max)
V
IN
= 0V, R
L
= 15µH + 8Ω + 15µH 3.75
I
SD
Shutdown Current V
SD
= GND
(6)
0.01 2.0 µA (max)
V
SDIH
Shutdown Voltage Input High 1.0 1.4 V (min)
V
SDIL
Shutdown Voltage Input Low 0.8 0.4 V (max)
V
GSIH
Gain Select Input High 1.0 1.4 V (min)
V
GSIL
Gain Select Input Low 0.8 0.4 V (max)
5.5 dB (min)
A
V
Closed Loop Gain V
Gain Select
= V
DD
6
6.5 dB (max)
11.5 dB (min)
A
V
Closed Loop Gain V
Gain Select
= GND 12
12.5 dB (max)
V
OS
Output Offset Voltage 10 25 mV (max)
T
WU
Wake-up Time 5 ms
P
o
Output Power THD = 1% (max); f = 1kHz 450 425 mW (min)
THD+N Total Harmonic Distortion+Noise P
O
= 100mW
RMS
; f
IN
= 1kHz 0.35 %
V
Gain Select
= V
DD
90 kΩ
R
IN
Differential Input Resistance
V
Gain Select
= GND 60 kΩ
V
ripple
= 100mV
RMS
sine wave 56 dB
Inputs terminated to GND (f = 217Hz)
PSRR Power Supply Rejection Ratio
V
Ripple
= 100mV
RMS
sine wave 65 dB
P
OUT
= 10mW,1kHz (f = 217Hz)
CMRR Common Mode Rejection Ratio V
Ripple
= 100mV
RMS
, 41 dB
f
Ripple
= 217Hz
SNR Signal to Noise Ratio P
O
= 400mW
RMS
, A-Weighted Filter 83 dB
ε
OUT
Output Noise A-Weighted filter, V
in
= 0V 125 µV
(1) All voltages are measured with respect to the ground pin, unless otherwise specified.
(2) Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which guarantee specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not guaranteed for parameters where no limit is given, however, the typical value is a good
indication of device performance.
(3) Typical specifications are specified at 25°C and represent the parametric norm.
(4) Tested limits are ensured to AOQL (Average Outgoing Quality Level).
(5) Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
(6) Shutdown current is measured in a normal room environment. Exposure to direct sunlight will increase I
SD
by a maximum of 2µA. The
Shutdown pin should be driven as close as possible to GND for minimal shutdown current and to V
DD
for the best THD performance in
PLAY mode. See the SHUTDOWN FUNCTION section under Application Information for more information.
External Components Description
(See Figure 1)
Components Functional Description
1. C
S
Supply bypass capacitor which provides power supply filtering. Refer to the Power Supply Bypassing section 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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