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參數(shù)資料
| 型號： | CXA1744AR |
| 廠商： | Sony Corporation |
| 英文描述： | IF Amplifier for Digital Cordless Telephone(數(shù)字無線電話射頻放大器) |
| 中文描述： | 中頻放大器，數(shù)字無繩電話（數(shù)字無線電話射頻放大器） |
| 文件頁數(shù)： | 16/18頁 |
| 文件大?。?/td> | 241K |
| 代理商： | CXA1744AR |
—16—
CXA1744AR
3) Multiplier
The
×
5 multiplier is provided in this IC for mixer local signal. The fifth-order component of the input signal is
extracted by the resonance circuit connected to Pin 44 externally. Wire the resonance circuit as close to
Pin 44 as possible.
4) Mixer
The CXA1744AR mixer is of double balanced type. Its input is at Pins 38 and 39; when input from Pin 39,
Pin 38 should be grounded with a capacitor.
5) 10.7 MHz filter
The mixer output impedance and IF amplifier input impedance are approximately 330
. The IF amplifier
output impedance and limiter amplifier input impedance are approximately 460
. Use the 10.7 MHz filter
with matching.
6) Detector
For quadrature FM detection, the phase of the limiter output (Pin 24) is shifted 90° by the RLC parallel
resonance circuit or discriminator as the output is input to pin 23.
The phase shifter by RLC parallel resonance circuit is shown below. In this case, values of L and C are
determined so that the center frequency of the second IF signal and the parallel resonance frequency are
equal. As the value of R sets the detector output level, select this value so as to obtain the required output
level.
With regards to the detector input, the center frequency of the second IF signal and the frequency for the
minimum value of the detector distortion does not match because the internal delay is more than the
external one. Add the delay circuit as shown below to match the center frequency of the second IF signal
and the frequency for the minimum value of the detector distortion.
Delay circuit
QDIN
RSSIV
CC
LIMOUT
L
C
R
23
24
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| CXA1816-0000-000N00M40E8 | 功能描述:大功率LED - 白色 Warm White, 2700K 1682lm, 450mA, 80CRI RoHS:否 制造商:Cree, Inc. 照明顏色:Warm White 顏色溫度:2700 K 光通量:1682 lm 顯示角:115 deg 正向電流:450 mA 正向電壓:37 V 安裝風(fēng)格:SMD/SMT 系列:CXA1816 封裝:Tray |
| CXA1816-0000-000N00M427F | 功能描述:大功率LED - 白色 Warm White, 2700K 1682lm, 450mA, 80CRI RoHS:否 制造商:Cree, Inc. 照明顏色:Warm White 顏色溫度:2700 K 光通量:1682 lm 顯示角:115 deg 正向電流:450 mA 正向電壓:37 V 安裝風(fēng)格:SMD/SMT 系列:CXA1816 封裝:Tray |
| CXA1816-0000-000N00M427H | 功能描述:大功率LED - 白色 Warm White, 2700K 1682lm, 450mA, 80CRI RoHS:否 制造商:Cree, Inc. 照明顏色:Warm White 顏色溫度:2700 K 光通量:1682 lm 顯示角:115 deg 正向電流:450 mA 正向電壓:37 V 安裝風(fēng)格:SMD/SMT 系列:CXA1816 封裝:Tray |
| CXA1816-0000-000N00N20E6 | 功能描述:大功率LED - 白色 Warm White, 3500K 1762lm, 450mA, 80CRI RoHS:否 制造商:Cree, Inc. 照明顏色:Warm White 顏色溫度:3500 K 光通量:1762 lm 顯示角:115 deg 正向電流:450 mA 正向電壓:37 V 安裝風(fēng)格:SMD/SMT 系列:CXA1816 封裝:Tray |
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