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參數資料
| 型號： | CLC5506IMX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 模擬信號調理 |
| 英文描述： | Gain Trim Amplifier (GTA) |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO14 |
| 封裝： | SOIC-14 |
| 文件頁數： | 10/12頁 |
| 文件大?。?/td> | 250K |
| 代理商： | CLC5506IMX |
APPLICATION NOTE
(Continued)
Differential Input and Output Considerations
The CLC5506 typical application requires DC blocking ca-
pacitors for both inputs and outputs to main internal DC bias-
ing points.
The input impedance between the differential inputs (IN+,
IN-) is 200
//0.5pF. Since the 0.5pF capacitance can be ne-
glected in the VHF band, a 1:4 impedance ratio balun can be
used to transform a 50
source to the 200
differential in-
puts of CLC5506 for wide band design.
The CLC5506 has a pair of open collector differential outputs
(OUT+, OUT-). DC biasing is achieved through an RF induc-
tor. The RF inductor acts as a choke to block RF leakage and
interference. An external resistor across the differential out-
puts is used to set the output resistance of CLC5506. Wide-
band output matching to an unbalanced 50
load can be
achieved by using a 1:n balun. A 1:4 impedance ratio balun
is used when a 200
external resistor is used in a 50
sys-
tem.
Although the CLC5506 can be used as a single-ended de-
vice by grounding one of the inputs through a capacitor, the
noise figure would be severely degraded by 6dB.
The CLC5506 can also directly interface to balanced de-
vices, like SAW filters and ADCs. Narrowband design ex-
ample with ADC CLC5956 and SAW filter is provided below.
The component values of matching inductors and capacitors
depend on the actual input/output impedance of the SAW fil-
ter, ADC, PWB properties, layout and frequency band.
CLC5506 Evaluation Board
A proper printed circuit layout is essential for achieving high
frequency performance. To expedite evaluation, an as-
sembled and tested evaluation kit CLC5506PCASM is avail-
able for sale. See application note AN-1138 for technical de-
tails of evaluation kit. Order information and application note
is available on the Web at http://www.national.com
DS101050-20
FIGURE 4. Narrow band design example with balanced SAW filter and ADC
www.national.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| CLC5506M WAF | 制造商:Texas Instruments 功能描述: |
| CLC5506PCASM | 功能描述:BOARD EVALUATION FOR CLC5506 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產零件編號 系列:- 標準包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關產品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| CLC5509 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Ultra-Low Noise Preamplifier |
| CLC5509CM | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Ultra-Low Noise Preamplifier |
| CLC5509PCASM | 功能描述:BOARD EVALUATION FOR CLC5509 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產零件編號 系列:- 標準包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關產品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
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