LM4809MM National Semiconductor, LM4809MM Datasheet - Page 4

• Manufacturer Part Number: LM4809MM
• Description: IC, AMP, AUDIO, 105MW, AB, 8MSOP
• Manufacturer: National Semiconductor

Specifications of LM4809MM

• Amplifier Class: AB
• No. Of Channels: 2
• Output Power: 105mW
• Supply Voltage Range: 2V To 5.5V
• Thd + N: 0.3% @ 50mW, 32ohm, VDD=5V
• Load Impedance: 16ohm
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes

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PSRR
V
V
I
I
V
P
THD+N
Crosstalk
PSRR
V
V
DD
SD
SDIH
SDIL
OS
O
SDIH
SDIL
Electrical Characteristics V
Components
The following specifications apply for V
Electrical Characteristics V
The following specifications apply for V
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Note 3: All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 4: Human body model, 100pF discharged through a 1.5kΩ resistor.
Note 5: Typical specifications are specified at +25OC and represent the most likely parametric norm.
Note 6: Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 7: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 8: Machine Model ESD test is covered by specification EIAJ IC-121-1981. A 200pF cap is charged to the specified voltage, then discharged directly into the
IC with no external series resistor (resistance of discharge path must be under 50Ohms).
Note 9: The given θ
of the Exposed-Dap itself.
Note 10: The given θ
External Components Description
Symbol
Symbol
6. C
4. C
5. C
1. R
2. C
3. R
S
B
O
i
i
f
JA
Power Supply Rejection Ratio
Shutdown Voltage Input High
Shutdown Voltage Input Low
Supply Current
Shutdown Current
Output Offset Voltage
Output Power
Total Harmonic Distortion
Channel Separation
Power Supply Rejection Ratio
Shutdown Voltage Input High
Shutdown Voltage Input Low
JA
is for an LM4809 packaged in an LDA08B wit the Exposed-Dap soldered to a printed circuit board copper pad with an area equivalent to that
is for an LM4809 packaged in an LDA08B with the Exposed-Dap not soldered to any printed circuit board copper.
The inverting input resistance, along with R
pass filter with f
The input coupling capacitor blocks DC voltage at the amplifier’s input terminals. C
create a highpass filter with f
Components, for an explanation of determining the value of C
The feedback resistance, along with R
This is the supply bypass capacitor. It provides power supply filtering. Refer to the Application
Information section for proper placement and selection of the supply bypass capacitor.
This is the BYPASS pin capacitor. It provides half-supply filtering. Refer to the section, Selecting
Proper External Components, for information concerning proper placement and selection of C
This is the output coupling capacitor. It blocks the DC voltage at the amplifier’s output and forms a high
pass filter with R
Parameter
Parameter
c
L
= 1/(2πR
DD
DD
at f
= 3.3V unless otherwise specified, limits apply to T
= 2.6V unless otherwise specified, limits apply to T
O
= 1/(2πR
DD
DD
i
C
i
).
= 3.3V
C
= 2.6V
= 1/(2πR
L
C
f = 1kHz; Input terminated into 50Ω
V
V
V
THD+N = 0.1%, f = 1kHz
R
R
P
f = 20Hz to 20kHz
R
C
f = 1kHz; Input terminated into 50Ω
C
IN
IN
IN
O
B
L
L
L
B
O
= 16Ω
= 32Ω
= 32Ω; P
= 1.0µF; V
= 15mW, R
= 1.0µF; V
)
= 0V, I
= 0V, V
= 0V
(Figure 1)
i
, set closed-loop gain.
i
Functional Description
C
(Notes 2, 3) (Continued)
(Notes 2, 3)
4
i
). Refer to the section, Selecting Proper External
f
O
, set the closed-loop gain. R
SHUTDOWN
Conditions
Conditions
O
= 0A
RIPPLE
RIPPLE
= 15mW
L
= 32Ω
= 200mV
= 200mV
= GND
i
PP
PP
.
,
,
(Note 5)
(Note 5)
A
A
i
, along with C
Typ
Typ
= 25˚C.
= 25˚C.
0.9
0.2
4.0
0.6
70
20
16
70
70
LM4809
LM4809
i
, along with R
0.8 x V
0.2 x V
0.8 x V
0.2 x V
(Note 7)
(Note 7)
Limit
Limit
i
, form a high
DD
DD
DD
DD
B
.
i
,
(Limits)
V (max)
(Limits)
V (max)
V (min)
V (min)
Units
Units
mW
mW
mA
mV
dB
µA
dB
dB
%