參數(shù)資料
型號： LM4550VH
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 消費家電
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
文件頁數(shù)： 4/25頁
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)
Analog to Digital Converters
Resolution
Dynamic Range (Note 2)
Frequency Response
Digital to Analog Converters
Resolution
Dynamic Range (Note 2)
THD
Total Harmonic Distortion
Frequency Response
Group Delay (Note 2)
Out of Band Energy
Stop Band Rejection
D
T
Discrete Tones
Output Volume and Amplifier Section
A
S
Step Size
A
M
Mute Attenuation
Headphone Amplifier Total Harmonic
Distortion plus Noise
Digital I/O
(Note 2)
18
90
20
Bits
-60dB Input THD+N, A-Weighted
-1dB Bandwidth
86
dB (min)
kHz
18
89
0.01
20 - 21k
Bits
-60dB Input THD+N, A-Weighted
V
IN
= -3dB, f=1kHz, R
L
= 10k
85
dB (min)
%
Hz
mS (max)
dB
dB
dB
2
-40
70
-96
0dB to -46.5dB
1.5
86
dB
dB
THD+N
Loop thru Mode R
L
=32, F=1KHz,
P
out
=50mW
0.02
%
V
IL
Low level input voltage
0.30 x
DVDD
0.40 x
DVDD
0.50 x
DVDD
0.20 x
DVDD
±
10
±
10
V (max)
V
HI
High level input voltage
V (min)
V
OH
High level output voltage
V (min)
V
OL
Low level output voltage
V (max)
I
L
I
L
I
DR
Digital Timing Specifications
(Note 2)
F
BC
BIT_CLK frequency
T
BCP
BIT_CLK period
Input Leakage Current
Tri state Leakage Current
Output drive current
AC Link inputs
High impedance AC Link outputs
AC Link outputs
μA
μA
mA
5
12.288
81.4
MHz
nS
T
CH
BIT_CLK high
Variation of BIT_CLK period from 50%
duty cycle
±
20
% (max)
F
SYNC
T
SP
T
SH
T
SL
SYNC frequency
SYNC period
SYNC high pulse width
SYNC low pulse width
48
20.8
1.3
19.5
kHz
μS
μS
μS
T
SETUP
Setup Time
SDATA_IN, SDATA_OUT to falling edge
of BIT_CLK
Hold time of SDATA_IN, SDATA_OUT
from falling edge of BIT_CLK
BIT_CLK, SYNC, SDATA_IN or
SDATA_OUT
15
nS (min)
T
HOLD
Hold Time
5
nS (min)
T
RISE
Rise Time
6
nS (max)
L
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相關(guān)PDF資料
PDF描述
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 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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