參數(shù)資料
型號(hào)： LM4550VH
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 消費(fèi)家電
英文描述： AC ’97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conversion and National 3D Sound
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝： 7 X 7 X 1.40 MM, LQFP-48
文件頁(yè)數(shù)： 5/25頁(yè)
文件大?。?/td> 507K
代理商： LM4550VH
Electrical Characteristics
(Notes 1, 3) The following specifications apply for AV
DD
= 5V, DV
DD
= 5V, Fs =
48kHz, single codec configuration, unless otherwise noted. Limits apply for T
A
= 25C. The reference for 0dB is 1Vrms unless
otherwise specified. (Continued)
Symbol
Parameter
Conditions
LM4550
Units
(Limits)
Typical
(Note 7)
Limit
(Note 8)
T
FALL
Fall Time
BIT_CLK, SYNC, SDATA_IN or
SDATA_OUT
For cold reset
For cold reset
For warm reset
For warm reset
For ATE Test Mode
For ATE Test Mode
6
nS (max)
T
RST_LOW
T
RST2CLK
T
SH
T
SYNC2CLK
T
SU2RST
T
RST2HZ
RESET# active low pulse width
RESET# inactive to BIT_CLK start up
SYNC active high pulse width
SYNC inactive to BIT_CLK start up
Setup to trailing edge of RESET#
Rising edge of RESET# to Hi-Z
1.0
162.8
μS (min)
nS (min)
μS
nS (min)
nS (min)
nS (max)
1.3
162.8
15
25
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
functional, but do not guarantee specific performance limits.
Electrical Characteristics
state DC andAC 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 4:
The maximum power dissipation must be derated at elevated temperatures and is dictated by T
JMAX
,
θ
JA
, and the ambient temperature T
A
. The maximum
allowable power dissipation is P
DMAX
= (T
JMAX
–T
A
)/
θ
JA
or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4550, T
JMAX
= 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).
L
www.national.com
5
相關(guān)PDF資料
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LM4550 AC ’97 Rev 2.1 Multi-Channel Audio Codec with Stereo Headphone Amplifier, Sample Rate Conversion and National 3D Sound
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM4550VH WAF 制造商:Texas Instruments 功能描述:
LM4550VH/NOPB 功能描述:IC AC '97 CODEC 48-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:立體聲音頻 數(shù)據(jù)接口:串行 分辨率（位）:18 b ADC / DAC 數(shù)量:2 / 2 三角積分調(diào)變:是 S/N 比，標(biāo)準(zhǔn) ADC / DAC (db):81.5 / 88 動(dòng)態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數(shù)字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR)
LM4550VHX 制造商:Rochester Electronics LLC 功能描述:AC '97 REV 2.1 CODEC - Bulk
LM4550VHX/NOPB 制造商:Texas Instruments 功能描述:Audio Codec 2ADC / 2DAC 18-Bit 48-Pin LQFP T/R
LM4558 制造商:HTC 制造商全稱:HTC Korea TAEJIN Technology Co. 功能描述:DUAL OPERATIONAL AMPLIFIERS
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