Datasheet
LM4808
SNAS051D –FEBRUARY 2000–REVISED MAY 2013
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ELECTRICAL CHARACTERISTICS
(1) (2)
(continued)
The following specifications apply for V
DD
= 5V unless otherwise specified, limits apply to T
A
= 25°C.
Symbol Parameter Conditions LM4808 Units
(Limits)
Typ
(3)
Limit
(4)
P
tot
Total Power Dissipation V
IN
= 0V, I
O
= 0A 6 16.5 mW (max)
V
OS
Input Offset Voltage V
IN
= 0V 10 50 mV (max)
Ibias Input Bias Current 10 pA
0 V
V
CM
Common Mode Voltage
4.3 V
G
V
Open-Loop Voltage Gain R
L
= 5kΩ 67 dB
Io Max Output Current THD+N < 0.1 % 70 mA
R
O
Output Resistance 0.1 Ω
R
L
= 32Ω, 0.1% THD+N, Min .3
V
O
Output Swing V
R
L
= 32Ω, 0.1% THD+N, Max 4.7
Cb = 1.0µF, Vripple = 100mV
PP
, f = 89 dB
PSRR Power Supply Rejection Ratio
100Hz
Crosstalk Channel Separation R
L
= 32Ω 75 dB
f = 1 kHz
R
L
= 16Ω, 0.05 %
V
O
=3.5V
PP
(at 0 dB)
THD+N Total Harmonic Distortion + Noise 66 dB
R
L
= 32Ω, 0.05 %
V
O
=3.5V
PP
(at 0 dB)
66 dB
SNR Signal-to-Noise Ratio V
O
= 3.5V
pp
(at 0 dB) 105 dB
f
G
Unity Gain Frequency Open Loop, R
L
= 5kΩ 5.5 MHz
THD+N = 0.1%, f = 1 kHz
R
L
= 16Ω 105 mW
R
L
= 32Ω 70 60 mW
P
o
Output Power
THD+N = 10%, f = 1 kHz
R
L
= 16Ω 150 mW
R
L
= 32Ω 90 mW
C
I
Input Capacitance 3 pF
C
L
Load Capacitance 200 pF
SR Slew Rate Unity Gain Inverting 3 V/µs
ELECTRICAL CHARACTERISTICS
(1) (2)
The following specifications apply for V
DD
= 3.3V unless otherwise specified, limits apply to T
A
= 25°C.
Symbol Parameter Conditions Conditions Units
(Limits)
Typ
(3)
Limit
(4)
I
DD
Supply Current V
IN
= 0V, I
O
= 0A 1.0 mA (max)
V
OS
Input Offset Voltage V
IN
= 0V 7 mV (max)
(1) All voltages are measured with respect to the ground pin, unless otherwise specified.
(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 ensure specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication
of device performance.
(3) Typicals are measured at 25°C and represent the parametric norm.
(4) Tested limits are specified to AOQL (Average Outgoing Quality Level). Datasheet min/max specification limits are specified by design,
test, or statistical analysis.
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