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LM48820 Datasheet(PDF) 4 Page - Texas Instruments

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Part # LM48820
Description  Ground-Referenced, Ultra Low Noise, Fixed Gain, 95mW Stereo Headphone Amplifier
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM48820 Datasheet(HTML) 4 Page - Texas Instruments

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LM48820
SNAS370B – MAY 2007 – REVISED MAY 2013
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings
(1) (2) (3)
Supply Voltage
4.75V
Storage Temperature
−65°C to +150°C
Input Voltage
-0.3V to VDD + 0.3V
Power Dissipation (4)
Internally Limited
ESD Susceptibility (5)
2000V
ESD Susceptibility (6)
200V
Junction Temperature
150°C
Thermal Resistance
θJA
(7)
86°C/W (typ)
(1)
All voltages are measured with respect to the GND 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 that specify 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)
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(4)
The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature,
TA. The maximum allowable power dissipation is PDMAX = (TJMAX - TA) / θJA or the number given in Absolute Maximum Ratings,
whichever is lower. See Typical Performance Characteristics for more information
(5)
Human body model, 100pF discharged through a 1.5k
Ω resistor.
(6)
Machine Model, 220pF - 240pF discharged through all pins.
(7)
θJA value is measured with the device mounted on a PCB with a 3” x 1.5”, 1oz copper heatsink.
Operating Ratings
Temperature Range
TMIN ≤ TA ≤ TMAX
−40°C ≤ TA ≤ 85°C
Supply Voltage (VDD)
1.6V
≤ VDD ≤ 4.5V
Electrical Characteristics VDD = 3V
(1) (2)
The following specifications apply for VDD = 3V, 16Ω load, and the conditions shown in “Typical Audio Amplifier Application
Circuit” (see Figure 1) unless otherwise specified. Limits apply to TA = 25°C.
LM48820
Units
Symbol
Parameter
Conditions
Typical
Limit
(Limits)
(3)
(4) (5)
VIN = 0V, inputs terminated
4.7
5.5
mA (max)
both channels enabled
Quiescent Power Supply Current
IDD
Full Power Mode
VIN = 0V, inputs terminated
3
mA (max)
one channel enabled
ISD
Shutdown Current
SD_LC = SD_RC = GND
0.05
2
µA (max)
VOS
Output Offset Voltage
RL = 32Ω, VIN = 0V
1
5
mV (max)
AV
Voltage Gain
–1.5
V/V
ΔAV
Gain Match
1
%
(1)
All voltages are measured with respect to the GND 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 that specify 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)
Limits are specified to AOQL (Average Outgoing Quality Level).
(5)
Data sheet min and max specification limits are specified by design, test, or statistical analysis.
4
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Copyright © 2007–2013, Texas Instruments Incorporated
Product Folder Links: LM48820


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