- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1908 > CS4202-JQZR (Cirrus Logic Inc)IC CODEC AUDIO '97 48-TQFP PDF資料下載
參數(shù)資料
| 型號： | CS4202-JQZR |
| 廠商： | Cirrus Logic Inc |
| 文件頁數(shù)： | 18/66頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CODEC AUDIO '97 48-TQFP |
| 標準包裝： | 2,000 |
| 類型： | 音頻編解碼器 '97 |
| 數(shù)據(jù)接口： | 串行 |
| 分辨率（位）： | 24 b |
| ADC / DAC 數(shù)量： | 1 / 1 |
| 三角積分調變： | 是 |
| 動態(tài)范圍，標準 ADC / DAC (db)： | 90 / 90 |
| 電壓 - 電源，模擬： | 4.75 V ~ 5.25 V |
| 電壓 - 電源，數(shù)字： | 4.75 V ~ 5.25 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-LQFP |
| 供應商設備封裝： | 48-TQFP（9x9） |
| 包裝： | 帶卷 (TR) |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁當前第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁
Micrel, Inc.
MIC3001
August 2004
25
M9999-082404-A
hbwhelp@micrel.com or (408) 955-1690
Figure 8. MIC3001 Power-On Timing (OE = 1)
Fault Comparators
In addition to detecting and reporting the events specified
in SFF-8472, the MIC3001 also monitors five fault
conditions: inadequate supply voltage, thermal diode
faults, excessive bias current, excessive transmit power,
and APC op-amp saturation. Comparators monitor these
parameters in order to respond quickly to fault conditions
that could indicate link failure or safety issues, see Figure
9. When a fault is detected, the laser is shut down and
TXFAULT is asserted. Each fault source may be
independently disabled using the FLTMSK register.
FLTMSK is non-volatile, allowing faults to be masked only
during calibration and testing or permanently.
Figure 9. Fault Comparator Logic
Thermal diode faults are detected within the temperature
measurement subsystem when an out-of-range signal is
detected. A window comparator circuit monitors the voltage
on the compensation capacitor to detect APC op-amp
saturation (Figure 10). Op-amp saturation indicates that
some fault has occurred in the control loop such as loss of
feedback. The saturation detector is blanked for a time,
tFLTTMR, following laser turn-on since the compensation
voltage will essentially be zero at turn-on. The FLTTMR
interval is programmable from 0.5ms to 127ms (typical) in
increments of 0.5ms (fFLTTMR). Note that a saturation
comparator cannot be relied upon to meet certain eye-
safety standards that require 100ms response times. This is
because the operation of a saturation detector is limited by
the loop bandwidth, i.e., the choice of CCOMP. Even if the
comparator itself was very fast, it would be subject to the
limited slew-rate of the APC op-amp. Only the other fault
comparator
channels
will
meet
<100ms
timing
requirements.
The MIC3001 can also except and respond to fault inputs
from external devices. See “SHDN and TXFIN” section.
A similar comparator circuit monitors received signal
strength and asserts RXLOS when loss-of-signal is
detected (Figure 11). RXLOS will be asserted when and if
VRX drops below the level programmed in LOSFLT.
Hysteresis is implemented such that RXLOS will be de-
asserted when VRX subsequently rises above the level
programmed in LOSFLTn. The loss-of-signal comparator
may be disabled completely by setting the LOSDIS bit in
OEMCFG3. Once the LOS comparator is disabled, an
external device may drive RXLOS. The state of the RXLOS
pin is reported in the CNTRL register regardless of whether
it is driven by the internal comparator or by an external
device.
A
programmable
digital-to-analog
converter
provides the comparator reference voltages for monitoring
received signal strength, transmit power, and bias current.
Glitches less than 10ms (typical) in length are rejected by
相關PDF資料 |
PDF描述 |
|---|---|
| CS4205-KQZ | IC CODEC AC97 I2S 48-LQFP |
| CS4207-DNZ | IC CODEC AUD HDPN AMP AUTO 48QFN |
| CS4265-CNZ | IC CODEC 24BIT 104DB 32QFN |
| CS4270-DZZ | IC CODEC 24BIT 105DB 24TSSOP |
| CS4271-DZZ | IC CODEC 24BIT 114DB 28-TSSOP |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| CS420-3 | 制造商:Captive Fastener Corporation 功能描述: |
| CS4205 | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:CrystalClear Audio Codec 97 with Portable Computing |
| CS4205_05 | 制造商:CIRRUS 制造商全稱:Cirrus Logic 功能描述:CrystalClear? Audio Codec ’97 for Portable Computing |
| CS4205BF | 制造商:Cypress Semiconductor 功能描述: |
| CS4205-KQ | 功能描述:接口—CODEC IC AC’97 Codec for Docking Stations RoHS:否 制造商:Texas Instruments 類型: 分辨率: 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:DSBGA-81 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復。