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PAC330AQR PDF预览

PAC330AQR

更新时间: 2024-11-14 22:44:35
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CALMIRCO /
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2页 127K
描述
P/ACTIVE AC TERMINATION NETWORK

PAC330AQR 数据手册

 浏览型号PAC330AQR的Datasheet PDF文件第2页 
CALIFORNIA MICRO DEVICES  
PACAC  
P/ACTIVE AC TERMINATION NETWORK  
Features  
Applications  
• AC Termination  
• Low Pass Filtering  
• High Frequency Performance  
• Miniature QSOP Package  
• 18 terminating lines/package  
• Stable resistor-capacitor network  
Refer to AP-201 Termination Application Note for  
further information.  
Product Description  
Note: CAMD’s P/Active AC Integrated Resistor-Capacitor Termination Network is an upgraded version of the original  
PRC202/212 series. PACAC provides 2KV ESD protection, minimized lead inductance and parasitic capacitive effects  
(with added ground pins), improved termination characteristics, and frequency response at high data transmission rates.  
The PACAC is recommended for all new designs.  
This integrated thin film resistor-capacitor network is designed to eliminate transmission line effects on high speed data  
lines. Incorporating CAMD’s P/Active AC Integrated Resistor-Capacitor Termination Network will result in improved board  
yields and reliability, minimized space and routing problems on the board, and reduced assembly costs. This highly  
integrated network requires no DC power dissipation.  
Why P/Active termination networks? A terminating RC is used to reduce or eliminate reflections on a transmission line. It  
can perform this function only when its impedance value matches the characteristic impedance of the transmission line across a  
broad frequency spectrum.  
Passive components affect the electrical performance of electronic systems. In reality, every resistor has some parasitic  
series inductance and a parasitic capacitance; and every capacitor has both series resistance and inductance. At low  
speeds, these parasitics do not affect the performance of resistors and capacitors. However, at higher speeds, these  
parasitics cause mismatch in a termination. To prevent these problems in high speed digital designs, a designer must take  
special care in selecting passive components or networks.  
The PACAC family of devices provides consistent and predictable behavior over a higher frequency range than discrete  
components or any previous network products.  
S TA N D A R D S P E C IF IC A TIO N S  
SCHEMATIC CONFIGURATION  
Absolute Tolerance (R)  
± 10%  
Absolute Tolerance (C)  
± 10%  
24 23 22 21 20 19 18 17 16 15 14 13  
Operating Temperature Range  
Crosstalk (See Text Circuit)  
0°C to 70°C  
< 5% (typical)  
100mW  
Power Rating/Resistor  
ESD Clamp  
Positive Clamp  
> 6V  
Negative Clamp  
< -6V  
ESD Protection  
(per MIL-STD-833, Method 3015)  
Storage Temperature  
Package Power Rating  
> 2KV  
-60°C to 150°C  
1.00W, max.  
1
2
3
4
5
6
7
8
9
10 11 12  
S TA N D A R D VA LU E S  
fmax* @  
10%  
1 GHz  
Time  
Constant (ns)  
R() C(pf)  
RC Code  
33  
47  
47  
47  
1.55  
2.21  
1.55  
3.75  
10.0  
330/470  
470/470  
470/330  
750/500  
101/101  
1 GHz  
47  
33  
1 GHz  
75  
50  
1 GHz  
100  
100  
1 GHz  
*Maximum frequency where the real part of the impedance of the AC  
termination is within 10% tolerance of the designed resistance R.  
C0840400  
© 2000 California Micro Devices Corp. All rights reserved.  
4/00  
215 Topaz Street, Milpitas, California 95035  
Tel: (408) 263-3214  
Fax: (408) 263-7846  
www.calmicro.com  
1

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