PACAC [CALMIRCO]
P/ACTIVE AC TERMINATION NETWORK; P / ACTIVE AC终端网络
| 型号： | PACAC |
| 厂家： | 
CALIFORNIA MICRO DEVICES CORP |
| 描述： | P/ACTIVE AC TERMINATION NETWORK |
| 文件： | 总2页 (文件大小：127K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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: CAMDs 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 CAMDs 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* @
R± 10%
1 GHz
Time
Constant (ns)
R(Ω) 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
CALIFORNIA MICRO DEVICES
PACAC
S TA N D A R D P A R T O R D E R IN G IN F O R M A TIO N
Ordering Part Num ber
Package
Pins
24
24
Style
QSOP
QSOP
QSOP
QSOP
QSOP
Tubes
Tape & Reel
Part Marking
RC Code
330/470
470/470
470/330
750/500
101/101
PAC330/470AQ/T
PAC470/470AQ/T
PAC470/330AQ/T
PAC750/500AQ/T
PAC101/101AQ/T
PAC330/470AQ/R
PAC470/470AQ/R
PAC470/330AQ/R
PAC750/500AQ/R
PAC101/101AQ/R
PAC330/470ACQ
PAC470/470ACQ
PAC470/330ACQ
PAC750/500ACQ
PAC101/101ACQ
24
24
24
Crosstalk Test Circuit (TA=25OC)
1
2
3
4
5
24
23
22
21
20
19
6
7
Victim
Voltage
Test Point
To Victim
Line
Pulse Generator
0 to 5 volt
10 MHz
18
17
50
Ω
To All
Terminations
> 1ns Rise/Fall Time
8
9
Except Victim Line
16
15
10
11
12
14
13
©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
2
相关型号：
PACDN002Q/T
Trans Voltage Suppressor Diode, Unidirectional, 34 Element, Silicon, MO-137AD, QSOP-20
CALMIRCO
©2020 ICPDF网 联系我们和版权申明