- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384397 > HDM8515 (HYNIX SEMICONDUCTOR INC) ANALOG IC - DATASHEET REFERENCE PDF資料下載
參數(shù)資料
| 型號： | HDM8515 |
| 廠商： | HYNIX SEMICONDUCTOR INC |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | ANALOG IC - DATASHEET REFERENCE |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PQFP100 |
| 封裝： | LQFP-100 |
| 文件頁數(shù)： | 52/75頁 |
| 文件大?。?/td> | 272K |
| 代理商： | HDM8515 |
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頁當前第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頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁
52
11
Wideband AGC Control
Bit 0. Wideband AGC Mode
When this bit is set to one (Mode 0), the WB AGC output must be
filtered with an external integrating analog filter to implement a first order
feedback loop. When this bit is zero (Mode 1), a digital integrator within
the HDM8515 performs this function and the only external analog
function required is a low pass filter to remove the high frequency
components of the sigma delta converter output.
Bit 1. WB AGC Invert
When this bit is set to zero a high duty factor on the WB AGC output
corresponds to too much gain. When the control bit is set to one, high
duty factor corresponds to not enough gain.
Bit 2. WB AGC Hold
During normal tracking operation, this bit is set to one. When this bit is
set to zero and the wideband AGC is in Mode 1, the digital integrator is
held to the most recent value and loop updates are inhibited.
Bit 3. LNB Hold
When this bit is set to one, the output of LNB-Tone is held on zero.
Bit 4. I2C By-pass
When this bit is set to zero, SCL_I2CO and SDA_I2CO are disabled.
The default is one and Data/clock can be by-passed.
Bits [7:5]. WB AGC Gain
This three bit field defines the time constant of the WB AGC in Mode 1.
A value of zero corresponds to the shortest time constant and 7
corresponds to the slowest time constant.
LNB Tone
This eight bit value establishes the control for LNB tone generator. If f
L
is the desired frequency and f
C
is the clock frequency, the value to be
stored in this 8 bit field is the integer portion of f
L
(2
17
)/f
C
. The default
value(20H) generates 22KHz tone at 90MHz sampling clock.
Sigma Delta
This eight bit input value establishes the control for Sigma Delta
converter. This function is independent of other demodulator functions
and is provided as control for external analog components.
12
13
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HDM8515P | Operational Amplifier (Op-Amp) IC; Number of Amplifiers:4; Package/Case:14-DIP; Op Amp Type:Low Power; Single Supply Voltage Min (+V):3V; Dual Supply Voltage Max (+/- V):16V; Amplifier Type:Operational; Mounting Type:Through Hole |
| HE6SF200 | High efficiency super fast silicon rectifier diode |
| HE82005 | 8-BIT MICRO-CONTROLLER |
| HE82006 | 8-BIT MICRO-CONTROLLER |
| HE82015 | 8-BIT MICRO-CONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HDM8515P | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:DVB/DSS Compliant Receiver |
| HDM9010 | 制造商:SHOULDER 制造商全稱:SHOULDER 功能描述:Frequency Synthesizer |
| HDM9020 | 制造商:SHOULDER 制造商全稱:SHOULDER 功能描述:Frequency Synthesizer |
| HDM9030 | 制造商:SHOULDER 制造商全稱:SHOULDER 功能描述:Frequency Synthesizer |
| HDM9040 | 制造商:SHOULDER 制造商全稱:SHOULDER 功能描述:Frequency Synthesizer |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。