LM4856LQX/NOPB National Semiconductor, LM4856LQX/NOPB Datasheet - Page 6

• Manufacturer Part Number: LM4856LQX/NOPB
• Manufacturer: National Semiconductor

Specifications of LM4856LQX/NOPB

• Operational Class: Class-AB
• Audio Amplifier Function: Headphone/Speaker
• Total Harmonic Distortion: 0.5@8Ohm@400mW%
• Single Supply Voltage (typ): 3V
• Dual Supply Voltage (typ): Not RequiredV
• Supply Current (max): 12@5VmA
• Power Supply Requirement: Single
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 68dB
• Single Supply Voltage (min): 2.6V
• Single Supply Voltage (max): 5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 24
• Package Type: LLP
• Lead Free Status / Rohs Status: Compliant

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T
t
t
t
t
t
1
2
3
4
5
Symbol
SD
Electrical Characteristics
The following specifications apply for V
Note 2: Absolute Maximum Rating indicate limits beyond which damage to the device may occur.
Note 3: Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and
test conditions, see the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may
degrade when the device is not operated under the listed test conditions.
Note 4: Human body model, 100pF discharged through a 1.5kΩ resistor.
Note 5: Typical specifications are specified at +25˚C and represent the most likely parametric norm.
Note 6: Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 7: 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 50Ω).
Note 8: All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 9: The given θ
Note 10: Please refer to the Output Noise vs Output Mode table in the Typical Performance Characteristics section for more details.
Note 11: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Digital Volume Range
(R
Digital Volume Range
(Phone_In_HS)
Digital Volume Stepsize
Digital Volume Stepsize Error
Phone_In_IHF Volume
Phone _In_IHF Mute Attenuation
Phone_In_IHF Input Impedance
Phone_In_HS Input Impedance
R
Thermal Shutdown Temperature
SCL (Clock) Period
SDA to SCL Set-up Time
Data Out Stable Time
Start Condition Time
Stop Condition Time
IN
IN
and L
and L
JA
and θ
IN
IN
Parameter
)
Input Impedance
JC
are for an LM4856 mounted on a demonstration board with a 4in
DD
= 3.0V, T
(Notes 2, 8) (Continued)
Input referred minimum gain
Input referred maximum gain
Input referred minimum gain
Input referred maximum gain
BTL gain from Phone_In _IHF to
SPKR
Output Mode 2, 4, 6
Maximum gain setting
Mininum gain setting
Maximum gain setting
Mininum gain setting
A
OUT
= 25˚C unless otherwise specified.
Conditions
6
2
area of 1oz printed circuit board copper ground plane.
(Note 5)
Typical
-34.5
-40.5
±
12.0
33.5
100
100
100
170
6.0
1.5
12
20
20
0.1
LM4856
(Notes 6,
Limits
-35.1
-33.9
-41.1
-39.9
11.4
12.6
±
11.4
12.6
125
125
150
100
100
100
11)
5.4
6.6
2.5
15
25
25
42
75
15
25
75
0.6
0
dB ( max)
dB (max)
dB (max)
dB (max)
dB (max)
dB (max)
kΩ (max)
kΩ (max)
kΩ (max)
kΩ (max)
kΩ (max)
dB (min)
dB (min)
dB (min)
dB (min)
dB (min)
kΩ (min)
kΩ (min)
kΩ (min)
kΩ (min)
kΩ (min)
(Limits)
˚C (min)
µs (min)
ns (min)
ns (min)
ns (min)
ns (min)
Units
dB
dB