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參數(shù)資料
| 型號： | TA32305FNG |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO30 |
| 封裝： | 0.300 INCH, 0.65 MM PITCH, LEAD FREE, PLASTIC, SSOP-30 |
| 文件頁數(shù)： | 3/26頁 |
| 文件大?。?/td> | 605K |
| 代理商： | TA32305FNG |
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TA32305FN/FNG
2003-12-04
11
Cautions for Designing Circuit Board Patterns
Observe the following cautions when designing circuit patterns for this product.
Local Oscillator Circuit (pin 1)
Isolate the local oscillator circuit block sufficiently from the RF amp block.
Isolate the local oscillator circuit block securely so that its output will not get in the IF input, IF filter, or
mixer input.
Do not place the local oscillator circuit block too close to the ceramic filter.
Subdivide the ground pattern for the local oscillator circuit block, and connect the subdivisions with thin
lines.
IF Input and Output Block (pin 8, 10)
Isolate the input from output patterns of the IF filter and detector block securely from each other.
Demodulator Circuit Block (pin 11)
Isolate the demodulator circuit block sufficiently from the IF input block (pin 8).
Do not place the LC too close to the IC device.
Data Output Block (pin 30)
Isolate the data output block sufficiently from the IF input block (pin 8).
Isolate the output pattern of the data output block from other circuits as much as possible, so any noise from
a stage subsequent to the output will not affect them.
RF Amp Circuit Block
1) Preventing RF amp oscillation
Do not place the patterns connected to pins 16 and 17 too close to each other.
Isolate the patterns connected to the input block (pin 16) and output block (pin 19) from each other.
Make the RF input signal line relatively thin.
Place a relatively wide ground pattern between the RF-IN pin (pin 16) and RF-DEC pin (pin 17).
Connect the RF-OUT pin (pin 19) and MIX-IN pin (pin 20) with the shortest possible pattern.
2) Attaining a sufficient gain
To attain a sufficient RF amp gain, select an optimum value for the input matching circuit block (pin 16)
according to the board circuit pattern.
3) Sharing antenna with receiver and transmitter
Using hi power application, place the patterns connected to SAW filter and pin 15 close.
IC Mounting Area
Provide a ground pattern under the IC device, and prepare relatively many through holes.
Cautions for mounting
Mount better accurate constants of capacitance in IF filter block and detector block.
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| TA32305FNG(EL) | 功能描述:射頻無線雜項 200MHz-450MHz Transceiver RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
| TA327401 | 制造商:WACHENDORFF 功能描述:RATE METER 4 DIGITS 24-230VA 制造商:WACHENDORFF 功能描述:RATE METER, 4 DIGITS, 24-230VAC/DC |
| TA32910Q | 制造商:DYNEX 制造商全稱:Dynex Semiconductor 功能描述:Asymmetric Thyristor |
| TA32912Q | 制造商:DYNEX 制造商全稱:Dynex Semiconductor 功能描述:Asymmetric Thyristor |
| TA32914Q | 制造商:DYNEX 制造商全稱:Dynex Semiconductor 功能描述:Asymmetric Thyristor |
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