LM4665LD National Semiconductor, LM4665LD Datasheet - Page 4

• Manufacturer Part Number: LM4665LD
• Manufacturer: National Semiconductor

Specifications of LM4665LD

• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 1-Channel Mono
• Output Power (typ): 1.4x1@8OhmW
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.8@8Ohm@400mW%
• Single Supply Voltage (typ): 3/5V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 52dB
• Single Supply Voltage (min): 2.7V
• Single Supply Voltage (max): 5.5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 10
• Package Type: LLP EP
• Lead Free Status / Rohs Status: Not Compliant

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I
I
V
V
V
V
V
V
A
A
V
T
P
THD+N
R
PSRR
CMRR
e
DD
SD
Symbol
N
WU
SDIH
SDIL
SDIH
SDIL
GSIH
GSIL
V
V
OS
o
IN
Electrical Characteristics V
The following specifications apply for V
erwise specified. Limits apply for T
Note 1: All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 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.
Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
allowable power dissipation is P
See the Efficiency and Power Dissipation versus Output Power curves for more information.
Note 4: Human body model, 100 pF discharged through a 1.5 kΩ resistor.
Note 5: Machine Model, 220 pF–240 pF discharged through all pins.
Note 6: Typical specifications are specified at 25˚C and represent the parametric norm.
Note 7: Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 9: Shutdown current is measured in a normal room environment. Exposure to direct sunlight will increase I
should be connected to V
performance in PLAY mode. See the Application Information section under SHUTDOWN FUNCTION for more information.
Note 10: The exposed-DAP of the LDA10B package should be electrically connected to GND.
Note 11: The LM4665 in the micro SMD package (ITL) has an operating range of 2.7V - 3.8V for 8Ω speaker loads. The supply range may be increased as speaker
impedance is increased. It is not recommended that 4Ω loads be used with the micro SMD package. To increase the supply voltage operating range, see Figure 2
and INCREASING SUPPLY VOLTAGE RANGE in the Application Information section for more information.
External Components Description
(Figure 1)
Components
1.
Quiescent Power Supply Current
Shutdown Current
Shutdown Voltage Input High
Shutdown Voltage Input Low
Shutdown Voltage Input High
Shutdown Voltage Input Low
Gain Select Input High
Gain Select Input Low
Closed Loop Gain
Closed Loop Gain
Output Offset Voltage
Wake-up Time
Output Power
Total Harmonic Distortion+Noise
Differential Input Resistance
Power Supply Rejection Ratio
Common Mode Rejection Ratio
Output Noise Voltage
C
S
DD
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.
Parameter
or GND and the Shutdown pin should be driven as close as possible to V
DMAX
= (T
JMAX
A
= 25˚C.
–T
DD
A
)/θ
JA
= 3V, and R
or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4665, T
DD
V
V
V
V
V
V
V
V
V
THD+N = 2% (max), f
P
V
V
V
f
Inputs Terminated
V
f
A-Weighted filter, V
Ripple
Ripple
IN
IN
SD
SD Mode
SD Mode
SD Mode
SD Mode
Gain Select
Gain Select
O
Gain Select
Gain Select
Ripple
Ripple
= 3V
= 100mW
= 0V, No Load
= 0V, 8Ω + 22µH Load
= V
= 217Hz, A
= 217Hz, A
= 100mV
= 100mV
L
SD Mode
= 8Ω + 33µH, measurement bandwidth is
= V
= V
= GND
= GND
= V
= GND
= V
= GND, Gain = 12dB
Conditions
(Notes 1, 2)
DD
DD
RMS
Functional Description
DD
DD
4
(Note 9)
RMS
RMS
, f
, Gain = 6dB
V
V
IN
= 6dB,
= 6dB
IN
,
,
= 1kHz
IN
= 0V
= 1kHz
DD
JMAX
or GND for minimum shutdown current and the best THD
, θ
JA
(Note 6)
SD
Typical
, and the ambient temperature T
0.01
400
100
350
3.0
3.5
1.0
0.8
1.0
0.8
1.0
0.8
0.4
by a maximum of 2µA. The Shutdown Mode pin
12
10
65
52
39
6
5
LM4665
<
10Hz - 22kHz unless oth-
(Notes 7, 8)
Limit
11.5
12.5
350
7.0
5.0
1.4
0.4
1.4
0.4
1.4
0.4
5.5
6.5
A
. The maximum
JMAX
mA (max)
mW (min)
µA (max)
dB (max)
dB (max)
dB (min)
dB (min)
% (max)
(Limits)
V (max)
V (max)
V (max)
V (min)
V (min)
V (min)
Units
= 150˚C.
mA
mV
ms
kΩ
kΩ
dB
dB
µV