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參數(shù)資料
| 型號： | MICRF007 |
| 廠商： | MICREL INC |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | QwikRadio Low-Power UHF Receiver |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO8 |
| 封裝： | SO-8 |
| 文件頁數(shù)： | 13/16頁 |
| 文件大?。?/td> | 96K |
| 代理商： | MICRF007 |
December 2000
13
MICRF007
MICRF007
Micrel
(6)
t
1.333C
0.44
AGC
=
where:
C
AGC
is in
μ
F, and
t is in seconds.
Selecting C
AGC
Capacitor in Duty-Cycle Mode
Generally, droop of the AGC control voltage during shutdown
should be replenished as quickly as possible after the IC is
“
turned-on
”
. As described in the functional description, for
about 10ms after the IC is turned on, the AGC push-pull
currents are increased to 45 times their normal values.
Consideration should be given to selecting a value for C
AGC
and a shutdown time period such that the droop can be
replenished within this 10ms period.
Polarity of the droop is unknown, meaning the AGC voltage
could droop up or down. Worst-case from a recovery stand-
point is downward droop, since the AGC pullup current is
1/10th magnitude of the pulldown current. The downward
droop is replenished according to the Equation 7:
(7)
I
C
V
t
AGC
=
where:
I = AGC pullup current for the initial 10ms (67.5
μ
A)
C
AGC
= AGC capacitor value
t = droop recovery time
V = droop voltage
For example, if user desires
t = 10ms and chooses a 4.7
μ
F
C
AGC
, then the allowable droop is about 144mV. Using the
same equation with 200nA worst case pin leakage and
assuming 1
μ
A of capacitor leakage in the same direction, the
maximum allowable
t (shutdown time) is about 0.56s for
droop recovery in 10ms.
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相關(guān)代理商/技術(shù)參數(shù) |
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| MICRF007BM | 功能描述:IC RECEIVER UHF LOW POWER 8SOIC RoHS:否 類別:RF/IF 和 RFID >> RF 接收器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 09/Jan/2012 標(biāo)準(zhǔn)包裝:50 系列:* 頻率:850MHz ~ 2.175GHz 靈敏度:- 數(shù)據(jù)傳輸率 - 最大:- 調(diào)制或協(xié)議:- 應(yīng)用:* 電流 - 接收:* 數(shù)據(jù)接口:PCB，表面貼裝 存儲容量:- 天線連接器:PCB，表面貼裝 特點(diǎn):- 電源電壓:4.75 V ~ 5.25 V 工作溫度:0°C ~ 85°C 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| MICRF007BM TR | 功能描述:IC RECEIVER UHF 300MHZ 8-SOIC RoHS:否 類別:RF/IF 和 RFID >> RF 接收器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 09/Jan/2012 標(biāo)準(zhǔn)包裝:50 系列:* 頻率:850MHz ~ 2.175GHz 靈敏度:- 數(shù)據(jù)傳輸率 - 最大:- 調(diào)制或協(xié)議:- 應(yīng)用:* 電流 - 接收:* 數(shù)據(jù)接口:PCB，表面貼裝 存儲容量:- 天線連接器:PCB，表面貼裝 特點(diǎn):- 電源電壓:4.75 V ~ 5.25 V 工作溫度:0°C ~ 85°C 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| MICRF007YM | 功能描述:射頻接收器 300-440MHz Receiver, 1.2kbps, 1.7mA With Shutdown( Lead Free) RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel |
| MICRF007YM TR | 功能描述:射頻接收器 300-440MHz Receiver, 1.2kbps, 1.7mA With Shutdown( Lead Free) RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel |
| MICRF008 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:QwikRadio Sweep-Mode Receiver |
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