參數(shù)資料
型號(hào)： LM4549BVHX/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 消費(fèi)家電
英文描述： LM4549B AC '97 Rev 2.1 Multi-Channel Audio Codec with Sample Rate Conversion and National 3D Sound; Package: LQFP; No of Pins: 48; Qty per Container: 1000/Reel
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝： 7 X 7 MM, 1.40 MM HEIGHT, LQFP-48
文件頁(yè)數(shù)： 24/28頁(yè)
文件大?。?/td> 927K
代理商： LM4549BVHX/NOPB
Electrical Characteristics (Notes 1, 5) The following specifications apply for AV
DD = 5V, DVDD = 3.3V, Fs =
48 kHz, single codec configuration, (primary mode) unless otherwise noted. Limits apply for T
A= 25C. The reference for 0 dB
is 1 Vrms unless otherwise specified. (Continued)
Symbol
Parameter
Conditions
LM4549B
Units
(Limits)
Typical
Limit
T
SHOLD
Hold Time for codec SYNC
Hold time of SYNC from falling edge of
BIT_CLK
10
ns (min)
T
CO
Output Valid Delay
Output Delay of SDATA_IN from rising
edge of BIT_CLK
5.2
15
ns (max)
T
RISE
BIT_CLK, SYNC, SDATA_IN or
SDATA_OUT
6
ns (max)
T
FALL
BIT_CLK, SYNC, SDATA_IN or
SDATA_OUT
6
ns (max)
T
RST_LOW
RESET# active low pulse width(Note
For Cold Reset
1.0
s (min)
T
RST2CLK
RESET# inactive to BIT_CLK start
up
For Cold Reset
271
162.8
ns (min)
T
SH
SYNC active high pulse width(Note
For Warm Reset
1.0
s (min)
T
SYNC2CLK
SYNC inactive to BIT_CLK start up
For Warm Reset
162.8
ns (min)
T
S2_PDOWN
AC Link Power Down Delay
Delay from end of Slot 2 to BIT_CLK,
SDATA_IN low
1
s (max)
T
SUPPLY2RST
Power On Reset
Time from minimum valid supply levels
to end of Reset
1
s (min)
T
SU2RST
Setup to trailing edge of
For ATE Test Mode
15
ns (min)
T
RST2HZ
Rising edge of RESET# to
For ATE Test Mode
25
ns (max)
Note 1: 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 guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which
guarantee 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 2: Human body model, 100 pF discharged through a 1.5 k
resistor.
Note 3: Machine Model, 220 pF – 240 pF discharged through all pins.
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 LM4549B, TJMAX = 150C.
The typical junction-to-ambient thermal resistance is 74C/W for package number VBH48A.
Note 5: All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 6: Typicals are measured at 25C and represent the parametric norm.
Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: Loopthrough mode describes a path from an analog input through the analog mixer to an analog output
Note 9: These specifications are guaranteed by design and characterization; they are not production tested.
Note 10: Out of band energy is measured from 28.8 kHz to 100 kHz relative toa1Vrms DAC output.
LM4549B
www.national.com
5
相關(guān)PDF資料
PDF描述
LM4550BVH/NOPB LM4550B AC '97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conversion and National 3D Sound; Package: LQFP; No of Pins: 48; Qty per Container: 250/Tray
LM4550BVHX/NOPB LM4550B AC '97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conversion and National 3D Sound; Package: LQFP; No of Pins: 48; Qty per Container: 1000/Reel
LM4562NA/NOPB LM4562 Dual High Performance, High Fidelity Audio Operational Amplifier; Package: MDIP; No of Pins: 8; Qty per Container: 40/Rail
LM45BIM3/NOPB LM45 SOT-23 Precision Centigrade Temperature Sensors; Package: SOT-23; No of Pins: 3; Qty per Container: 1000/Reel
LM45BIM3X/NOPB LM45 SOT-23 Precision Centigrade Temperature Sensors; Package: SOT-23; No of Pins: 3; Qty per Container: 3000/Reel
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4549VH 制造商:Texas Instruments 功能描述:
LM4549VHX 制造商:Texas Instruments 功能描述:
LM4550 制造商:NSC 制造商全稱:National Semiconductor 功能描述:AC ’97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conversion and National 3D Sound
LM4550B 制造商:NSC 制造商全稱:National Semiconductor 功能描述:AC 97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conversion and National 3D Sound
LM4550BVH 功能描述:接口—CODEC RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉(zhuǎn)換速率:48 kSPs 接口類型:I2C ADC 數(shù)量:2 DAC 數(shù)量:4 工作電源電壓:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel
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