LM4867MT National Semiconductor, LM4867MT Datasheet - Page 4

• Manufacturer Part Number: LM4867MT
• Description: Output-Transient-Free Dual 2.1W Audio Amplifier Plus No Coupling Capacitor Stereo Headphone Function
• Manufacturer: National Semiconductor

www.national.com
Symbol
X
Symbol
THD+N
PSRR
SNR
V
P
V
THD+N
PSRR
X
SNR
The following specifications apply for V
TALK
Electrical Characteristics for Bridged-Mode Operation
The following specifications apply for V
OS
O
OUT
TALK
Electrical Characteristics for Single-Ended Operation
Note 3: 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 operates within the Operating Ratings. Specifications are not guaranteed for parameters where
no limit is given. The typical value however, is a good indication of device performance.
Note 4: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
allowable power dissipation is P
Information section or the Absolute Maximum Ratings section.
Note 5: Human body model, 100 pF discharged through a 1.5 k
Note 6: Machine model, 220 pF–240 pF discharged through all pins.
Note 7: The given
Note 8: The given
Note 9: The given
Note 10: The given
Note 11: The given
Note 12: The given
Note 13: All voltages are measured with respect to the ground (GND) pins, unless otherwise specified.
Note 14: Typicals are measured at 25˚C and represent the parametric norm.
Note 15: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level). Datasheet min/max specification limits are guaranteed by design, test, or
statistical analysis.
Note 16: The quiescent power supply current depends on the offset voltage when a practical load is connected to the amplifier.
Note 17: Output power is measured at the device terminals.
Note 18: When driving 3 loads from a 5V supply, the LM4867LQ, LM4867MTE, or LM4867MTE-1 must be mounted to the circuit board and forced-air cooled (450
linear-feet per minute).
Note 19: When driving 4
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
Channel Separation
Signal To Noise Ratio
Output Offset Voltage
Output Power
Output Voltage Swing
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
Channel Separation
Signal To Noise Ratio
JA
JA
JA
JA
JA
JA
is for an LM4867 packaged in an MXA20A with the Exposed-DAP soldered to an exposed 2in
is for an LM4867 packaged in an MXA20A with the Exposed-DAP soldered to an exposed 1in
is for an LM4867 packaged in an MXA20A with the Exposed-DAP not soldered to printed circuit board copper.
Parameter
is for an LM4867 packaged in an LQA24A with the Exposed-DAP soldered to an exposed 2in
is for an LM4867 packaged in an LQA24A with the Exposed-DAP soldered to an exposed 1in
is for an LM4867 packaged in an LQA24A with the Exposed-DAP not soldered to printed circuit board copper.
Parameter
loads from a 5V supply, the LM4867LQ, LM4867MTE or LM4867MTE-1 must be mounted to the circuit board.
DMAX
= (T
JMAX
DD
DD
− T
= 5V unless otherwise specified. Limits apply for T
= 5V unless otherwise specified. Limits apply for T
A
)/
20Hz
V
C
f = 1 kHz, C
V
JA
DD
DD
B
LM4867MTE, R
LM4867LQ, R
LM4867, R
V
THD = 0.5%, f = 1kHz, R
THD+N = 1%, f = 1kHz, R
20)
THD+N = 1%, f = 1kHz, R
THD+N = 10%, f = 1kHz, R
THD+N = 10%, f = 1kHz, R
THD+N = 10%, f = 1kHz, R
THD = 0.05%, R
A
R
C
f = 1kHz
f = 1kHz, C
V
. For the LM4867, T
= 2.2µF
IN
V
DD
L
B
= 5V, V
= 5V, P
= 32
= −1, P
= 2.2µF, V
= 0V
= 5V, P
f
resistor.
20kHz, A
B
RIPPLE
O
L
O
B
= 2.2µF
= 1.1W, R
O
= 8 , P
= 75mW, 20 Hz
= 2.2µF
L
RIPPLE
Conditions
= 340mW, R
Conditions
L
= 4 , P
4
L
JMAX
= 4 , P
= 200 mV
VD
= 5k
O
= 2
= 200mV
= 150˚C. For the
L
= 1W
O
= 8
O
= 2W
L
L
L
RMS
L
= 32
= 2W
L
L
L
= 8
= 16
= 8
= 32
= 16
= 32
RMS
, R
f
L
JMAX
(Note
,
20kHz,
= 8 ,
JA
,
s for different packages, please see the Application
JA
, and the ambient temperature T
(Notes 3, 13)
(Notes 3, 13) (Continued)
A
A
(Note 14)
2
2
(Note 14)
2
= 25˚C.
2
Typical
= 25˚C.
Typical
area of 1oz printed circuit board copper.
area of 1oz printed circuit board copper.
area of 1oz printed circuit board copper.
area of 1oz printed circuit board copper.
180
165
208
114
0.2
85
88
52
60
94
0.3
0.3
0.3
67
80
97
5
1
LM4867
LM4867
(Note 15)
(Note 15)
Limit
Limit
50
75
A
. The maximum
mV (max)
mW (min)
(Limits)
(Limits)
Units
Units
V
mW
mW
mW
mW
mW
dB
dB
dB
dB
dB
dB
%
%
%
%
P-P