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)
4.5V
−65˚C to +150˚C
-0.3V to V
DD
+ 0.3V
Internally Limited
2000V
200V
Junction Temperature
Thermal Resistance
θ
JA
(typ) TLE1411A (Note 11)
150˚C
86˚C/W
Operating Ratings
Temperature Range
T
MIN
≤
T
A
≤
T
MAX
Supply Voltage (V
DD
)
−40˚C
≤
T
A
≤
85˚C
1.6V
≤
V
DD
≤
4.2V
Electrical Characteristics V
DD
= 3V
The following specifications apply for V
DD
Symbol
Parameter
(Note 1)
= 3V and 16Ω load unless otherwise specified. Limits apply to T
A
= 25˚C.
Conditions
LM4926
Typ
(Note 6)
Limit
(Notes 7, 8)
Units
(Limits)
Quiescent Power Supply Current V
IN
= 0V, inputs terminated
Auto Standby Mode
both channels enabled
I
DD
V
IN
= 0V, inputs terminated
Quiescent Power Supply Current both channels enabled
Full Power Mode
V
IN
= 0V, inputs terminated
one channel enabled
Shutdown Current
Output Offset Voltage
Voltage Gain
Gain Match
Input Resistance
THD+N = 1% (max); f = 1kHz,
R
L
= 16Ω, one channel
THD+N = 1% (max); f = 1kHz,
R
L
= 32Ω, one channel
THD+N = 1% (max); f = 1kHz,
R
L
= 16Ω, (two channels in phase)
THD+N = 1% (max); f = 1kHz,
R
L
= 32Ω, (two channels in phase)
Total Harmonic Distortion +
Noise
P
O
= 60mW, f = 1kHz, R
L
= 16Ω
single channel
P
O
= 50mW, f = 1kHz, R
L
= 32Ω
single channel
V
RIPPLE
= 200mVp-p, Input Referred
PSRR
Power Supply Rejection Ratio
Full Power Mode
f = 217Hz
f = 1kHz
f = 20kHz
SNR
Signal-to-Noise Ratio
R
L
= 32Ω, P
OUT
= 20mW,
(A-weighted)
f = 1kHz, BW = 20Hz to 22kHz
V
SD_LC
= V
SD_RC
= GND
R
L
= 32Ω, V
IN
= 0V
2.3
7
5
0.1
0.7
–1.5
1
20
80
65
43
50
0.04
0.03
38
45
15
25
1.8
5
10
mA
mA (max)
mA
µA (max)
mV (max)
V/V
%
kΩ (min)
kΩ (max)
mW
mW
mW (min)
mW (min)
I
SD
V
OS
A
V
∆A
V
R
IN
P
O
Output Power
THD+N
%
70
65
50
100
V
IH
=
0.7*CPV
DD
V
IL
=
0.3*CPV
DD
5
dB
dB
V
IH
V
IL
T
WU
Shutdown Input Voltage High
Shutdown Input Voltage Low
Wake Up Time From Shutdown
V
V
µs
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4
LM4926
Electrical Characteristics V
DD
= 3V
The following specifications apply for V
DD
Symbol
Parameter
(Note 1) (Continued)
= 3V and 16Ω load unless otherwise specified. Limits apply to T
A
= 25˚C.
Conditions
LM4926
Typ
(Note 6)
Limit
(Notes 7, 8)
Units
(Limits)
X
TALK
Z
OUT
I
L
V
IN THRESH
Crosstalk
Output Impedance
Input Leakage
Input Voltage Threshold
R
L
= 16Ω, P
O
= 1.6mW,
f = 1kHz
Input Terminated
Input not terminated
60
dB
kΩ
nA
mVp
∞
60
±
0.1
2.8
Note 1:
All voltages are measured with respect to the GND 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 that
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 LM4926, see power
de-rating currents for more information.
Note 4:
Human body model, 100pF discharged through a 1.5kΩ resistor.
Note 5:
Machine Model, 220pF - 240pF 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:
Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 9:
If the product is in shutdown mode and V
DD
exceeds 4.2V (to a max of 4.5V V
DD
), then most of the excess current will flow through the ESD protection
circuits. If the source impedance limits the current to a max of 10mA, then the part will be protected. If the part is enabled when V
DD
is above 4.5V, circuit
performance will be curtailed or the part may be permanently damaged.
Note 10:
Human body model, 100pF discharged through a 1.5kΩ resistor.
Note 11:
θ
JA
value is measured with the device mounted on a PCB with a 3” x 1.5”, 1oz copper heatsink.
External Components Description
Components
1.
C
i
(Figure
1)
Functional Description
Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also creates a
