參數(shù)資料
型號(hào)： T4260
廠(chǎng)商： Atmel Corp.
英文描述： AM/FM Front End IC
中文描述： 調(diào)幅/調(diào)頻前端IC
文件頁(yè)數(shù)： 14/31頁(yè)
文件大小： 299K
代理商： T4260
14
T4260
4528G–AUDR–12/03
IF Amplifier
The IF gain amplifier can be used in AM and FM mode to compensate the loss of the
external ceramic bandfilters.
The IF gain can be controlled in 2-dB steps by setting Bit 6 to Bit 9 as given in Table 6.
Table 6.
IF Gain
IF Gain
12 dB
14 dB
16 dB
18 dB
20 dB
The selection of the IF amplifier input can be controlled by Bit 11 as given in Table 7.
Table 7.
IF-IN Operating Mode
REMARK:
The AM input (Pin 35) has an input impedance of 2.5 k
for matching with a crystal filter.
The FM input (Pin 36) has an input impedance of 330
for matching with a ceramic
filter.
VCO
The VCO HI/LO function is controlled by means of Bit 10.
Table 8.
VCO Operating Mode
RF-AGC
The AM and FM RF-AGC controls the current into the AM and FM pin diodes (FM Pin 3
and AM Pin 9) to limit the level at the AM or FM mixer input. If the level at the AM or FM
mixer input exceeds the selected threshold, then the current into the AM or FM pin
diodes increases. If this step is not sufficient in AM mode, the source drain voltage of
the MOSFET (Pin 11) can be decreased. In AM mode, the time constants can be
selected by the external capacitors at Pin 42 (RFAGCA1) and at Pin 12 (RFAGCAM2)
and in FM mode by an external capacitor at Pin 33 (RFAGCFM). In AM mode, the dou-
ble pole (by the capacitors at Pin 42 and Pin 12) allows a better harmonic distortion by a
lower time constant.
The RF-AGC can be controlled in 1-dB steps by setting the Bits 12 to 15. The values for
FM and AM are controlled by Bit 17.
B9
0
0
0
0
0
...
1
1
B8
0
0
0
0
1
...
1
1
B7
0
0
1
1
0
...
1
1
B6
0
1
0
1
0
...
0
1
...
40 dB
42 dB
IF-IN AM/FM
IF-IN FM
IF-IN AM
B11
0
1
VCO HI/LO
VCO high current
VCO low current
B10
0
1
相關(guān)PDF資料
PDF描述
T4260IL AM/FM Front End IC
T4260ILQ AM/FM Front End IC
T435-B High Performance Triacs(高性能雙向可控硅)
T450 DIL 14 PIN SINGLE OUTPUT
T400 DIL 14 PIN SINGLE OUTPUT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
T4260_08 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:AM/FM Front End IC
T4260_09 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:AM/FM Front End IC
T4260IL 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:AM/FM Front End IC
T4260-IL 功能描述:IC RECEIVER AM/FM FRONT 44-SSOP RoHS:否 類(lèi)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(chǔ)容量:- 天線(xiàn)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(pán) 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤(pán)
T4260ILQ 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:AM/FM Front End IC
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*