If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
Storage Temperature
Input Voltage
Power Dissipation (Note 3)
ESD Susceptibility (Note 4)
ESD Susceptibility (Note 5)
Junction Temperature
Thermal Resistance
θ
JC
(SOP)
θ
JA
(SOP)
6.0V
−65°C to +150°C
−0.3V to V
DD
+0.3V
Internally Limited
2000V
200V
150°C
35°C/W
150°C/W
θ
JA
(8 Bump micro SMD) (Note 10)
θ
JC
(MSOP)
θ
JA
(MSOP)
210°C/W
56°C/W
190°C/W
220°C/W
θ
JA
(LLP)
Soldering Information
See AN-1112 "microSMD Wafers Level Chip Scale
Package".
Operating Ratings
Temperature Range
T
MIN
≤
T
A
≤
T
MAX
Supply Voltage
−40°C
≤
T
A
≤
85°C
2.2V
≤
V
DD
≤
5.5V
Electrical Characteristics V
DD
= 5V
LM4889
Symbol
Parameter
Conditions
V
IN
= 0V, I
o
= 0A, no Load
V
IN
= 0V, I
o
= 0A, with BTL Load
V
shutdown
= GND (Note 8)
Typical
(Note 6)
I
DD
I
SD
V
SDIH
V
SDIL
P
o
THD+N
Quiescent Power Supply Current
Shutdown Current
Shutdown Voltage Input High
Shutdown Voltage Input Low
Output Power
Total Harmonic Distortion+Noise
THD = 2% (max); f = 1 kHz
P
o
= 0.4 Wrms; f = 1kHz
V
ripple
= 200mV sine p-p
f
ripple
= 217Hz
f
ripple
= 1kHz
V
ripple
= 200mV sine p-p
Input Floating
1
0.1
62
66
75
68
4
5
0.1
Limit
(Notes 7, 9)
8
8
2
1.2
0.4
Units
(Limits)
mA (max)
mA (max)
µA (max)
V (min)
V (max)
W
%
dB
dB
dB
PSRR
Power Supply Rejection Ratio
Electrical Characteristics V
DD
= 3.3V
LM4889
Symbol
Parameter
Conditions
V
IN
= 0V, I
o
= 0A, no Load
V
IN
= 0V, I
o
= 0A, with BTL Load
V
shutdown
= GND (Note 8)
Typical
(Note 6)
I
DD
I
SD
V
SDIH
V
SDIL
P
o
THD+N
PSRR
Quiescent Power Supply Current
Shutdown Current
Shutdown Voltage Input High
Shutdown Voltage Input Low
Output Power
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
THD = 1% (max); f = 1kHz
P
o
= 0.25Wrms; f = 1kHz
V
ripple
= 200mV sine p-p
f
ripple
= 217Hz
f
ripple
=1kHz
0.4
0.1
60
62
3.5
4.5
0.01
Limit
(Notes 7, 9)
7
7
2
1.2
0.4
Units
(Limits)
mA (max)
mA (max)
µA (max)
V (min)
V (max)
W
%
dB
dB
3
www.national.com
LM4889
Electrical Characteristics V
DD
= 2.6V
LM4889
Symbol
I
DD
I
SD
P
0
THD+N
PSRR
Parameter
Quiescent Power Supply Current
Shutdown Current
Output Power ( 8Ω
)
Output Power ( 4Ω
)
Total Harmonic Distortion+Noise
Power Supply Rejection Ratio
Conditions
V
IN
= 0V, I
o
= 0A, no Load
V
IN
= 0V, I
o
= 0A, with BTL Load
V
shutdown
= GND (Note 8)
THD = 1% (max); f = 1 kHz
THD = 1% (max); f = 1 kHz
P
o
= 0.1Wrms; f = 1kHz
V
ripple
= 200mV sine p-p
f
ripple
= 217Hz
f
ripple
= 1kHz
Typical
(Note 6)
2.6
3.0
0.01
0.2
0.22
0.08
44
44
Limit
(Notes 7, 9)
6
6
2
Units
(Limits)
mA (max)
mA (max)
µA (max)
W
W
%
dB
dB
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
JMAX
, θ
JA
, and the ambient temperature T
A
. The maximum
allowable power dissipation is P
DMAX
= (T
JMAX
–T
A
)/θ
JA
or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4889, see power derating
currents for additional 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:
Typicals are measured at 25°C and represent the parametric norm.
Note 7:
Limits are guaranteed to National's AOQL (Average Outgoing Quality Level).
Note 8:
For micro SMD only, shutdown current is measured in a Normal Room Environment. Exposure to direct sunlight will increase I
SD
by a maximum of 2µA.
Note 9:
Datasheet min/max specification limits are guaranteed by design, test or statistical analysis.
Note 10:
All bumps have the same thermal resistance and contribute equally when used to lower thermal resistance. The LM4889ITL demo board (views featured
in the
Application Information
section) has two inner layers, one for V
DD
and one for GND. The planes each measure 600mils x 600mils (15.24mm x 15.24mm)
and aid in spreading heat due to power dissipation within the IC.
External Components Description
(Figure
1)
Components
1.
2.
R
i
C
i
pass filter with C
i
at f
C
= 1/(2π
R
i
C
i
).
Input coupling capacitor which blocks the DC voltage at the amplifiers input terminals. Also creates a highpass filter
with R
i
at f
c
= 1/(2π
R
i
C
i
). Refer to the section,
Proper Selection of External Components,
for an explanation of
how to determine the value of C
i
.
Feedback resistance which sets the closed-loop gain in conjunction with R
i
. A
VD
= 2*(R
f
/R
i
).
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.
Bypass pin capacitor which provides half-supply filtering. Refer to the section,
Proper Selection of External
Components,
for information concerning proper placement and selection of C
B
.
Functional Description
Inverting input resistance which sets the closed-loop gain in conjunction with R
