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LM4545VH Datasheet(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM4545VH
Description  AC ??7 Codec with Stereo Headphone Amplifier and National 3D Sound
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM4545VH Datasheet(HTML) 4 Page - National Semiconductor (TI)

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Electrical Characteristics (Notes 1, 3) (Continued)
The following specifications apply for AV
DD = 5V, DVDD = 5V unless otherwise noted. Limits apply for TA= 25˚C. The reference
for 0dB is 1Vrms unless otherwise specified.
Symbol
Parameter
Conditions
LM4545
Units
(Limits)
Typical
(Note 7)
Limit
(Note 8)
Digital Timing Specifications (Note 2)
T
RST2CLK
RESET# inactive to BIT_CLK start
up
For cold reset
162.8
nS (min)
T
SH
SYNC active high pulse width
For warm reset
1.3
µS
T
SYNC2CLK
SYNC inactive to BIT_CLK start up
For warm reset
162.8
nS (min)
T
SU2RST
Setup to trailing edge of RESET#
For ATE Test Mode
15
nS (min)
T
RST2HZ
Rising edge of RESET# to Hi-Z
For ATE Test Mode
25
nS (max)
Note 1: All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 2: These specifications are guaranteed by design and characterization; they are not production tested.
Note 3:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is func-
tional, but do not guarantee specific performance limits.
Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guar-
antee 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 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. For the LM4545, TJMAX = 150˚C. The
typical junction-to-ambient thermal resistance is 74˚C/W for package number VBH48A.
Note 5: Human body model, 100 pF discharged through a 1.5 k
Ω resistor.
Note 6: Machine Model, 220 pF–240 pF discharged through all pins.
Note 7: Typicals are measured at 25˚C and represent the parametric norm.
Note 8: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
www.national.com
4


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