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參數(shù)資料
| 型號： | LM4548VHX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP48 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, TQFP-48 |
| 文件頁數(shù)： | 12/17頁 |
| 文件大小： | 328K |
| 代理商： | LM4548VHX |
Electrical Characteristics (Notes 1, 3) (Continued)
The following specifications apply for AV
DD = 5V, DVDD = 5V, Fs = 48kHz, single codec configuration, unless otherwise noted.
Limits apply for T
A= 25C. The reference for 0dB is 1Vrms unless otherwise specified.
Symbol
Parameter
Conditions
LM4548
Units
(Limits)
Typical
(Note 7)
Limit
(Note 8)
Digital Timing Specifications (Note 2)
T
SH
SYNC active high pulse width
For warm reset
1.3
S
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 LM4548, TJMAX = 150C. The
typical junction-to-ambient thermal resistance is 74C/W for package number VBH48A.
Note 5: Human body model, 100 pF discharged through a 1.5 k
resistor.
Note 6: Machine Model, 220 pF–240 pF discharged through all pins.
Note 7: Typicals are measured at 25C and represent the parametric norm.
Note 8: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
LM4548
www.national.com
4
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相關代理商/技術參數(shù) |
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| LM4549 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:AC ’97 Rev 2.1 Codec with Sample Rate Conversion and National 3D Sound |
| LM4549A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:AC ’97 Rev 2.1 Codec with Sample Rate Conversion and National 3D Sound |
| LM4549AVH | 制造商:Rochester Electronics LLC 功能描述:AC97 REV2.1 CODEC - Bulk 制造商:OC White Company 功能描述:Audio Codec 2ADC / 2DAC 18-Bit 48-Pin LQFP Tray |
| LM4549AVH WAF | 制造商:Texas Instruments 功能描述: |
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