CALIFORNIA MICRO DEVICES
PAC T
P/ACTIVE EMI/RFI T FILTER
Features
8 Filter Channels in Miniature QSOP Package
Ideal Frequency Response to Over 3 GHz
Low In-Band Insertion Loss Maintains Signal Integrity
Low Distortion Low Cross Talk
ESD Protected
Applications
EMI/RFI Filter
Low Pass Filter
SCSI Port Filter
LCD Panel Display Filter
Pin Assignments
1
2
3
4
5
6
7
8
9
10
11
12
GND
Filt1
Filt2
Filt3
GND
Filt4
Filt5
GND
Filt6
Filt7
Filt8
GND
GND
Filt1
Filt2
Filt3
GND
Filt4
Filt5
GND
Filt6
Filt7
Filt8
GND
24
23
22
21
20
19
18
17
16
15
14
13
Product Description
Note: CMDs P/Active TFilters are a higher performance, upgraded version of the original PRC200/210 series which
provides 2KV ESD protection, minimized lead inductance and parasitic capacitive effects (with added ground pins), and
improved crosstalk and filter performance characteristics at high data transmission rates. They exhibit almost ideal RC
characteristics to 3 GHz. The PAC T series is recommended for all new designs.
CMDs P/Active T is a highly integrated thin film resistor-capacitor network designed to suppress EMI/RFI noise at I/O ports
of personal computers and peripherals, workstations, Local Area Network (LAN), Asynchronous Transfer Mode (ATM), and
Wide Area Network (WAN). The filter includes ESD protection circuitry which prevents device destruction when subjected
to ESD discharges of greater than 2KV. The ESD protection circuitry permits the filter to operate on bipolar signals of up to
±6V. CMDs PAC T is housed in a surface mount package suitable for bottom side mounting to the board. This inte-
grated network solution minimizes space and routing problems and improves reliability and yields.
Why P/Active EMI/RFI filters?
EMI/RFI filters are needed to suppress noise at low and high frequencies of the signal.
Ferrite beads, commonly used for EMI/RFI filtering, are bulky and ineffective at low frequencies and have saturation
problems at high frequencies. Resistor-capacitor networks offer the best technical approach for effective EMI/RFI filtering.
Also, conventional thick film-based EMI/RFI filters do not effectively suppress noise at high frequencies.
STANDARD SPECIFICATIONS
Absolute Tolerance (R)
Absolute Tolerance (C)
Absolute Tolerance (C=15pF)
Operating Temperature Range
Power Rating/Resistor
Leakage Current
Crosstalk
(see Test Circuit)
ESD Clamp
Positive Clamp
Negative Clamp
ESD Protection
Storage Temperature
Package Power Rating
±5%
±10%
±20%
0
O
C to 70
O
C
100mW
1 µA @ 25
O
C max.
< 5% (typical)
> 6 Volts
< -6 Volts
> 2 KV
-65
O
C to +150
O
C
1.00W, max.
24
SCHEMATIC CONFIGURATION
23 22
21 20
19 18 17 16 15
14 13
1
2
3
4
5
6
7
8
9
10 11
12
© 1993, 1996 CMD Corp. All rights reserved.
10/97 Rev. 2
215 Topaz Street, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
CALIFORNIA MICRO DEVICES
STANDARD VALUES
C (pf)
RC Code
fc @ 3db
15
100/150T
1063 MHz
100
100/101T
160 MHz
47
150/470T
226 MHz
100
250/101T
64 MHz
200
250/201T
32 MHz
47
330/470T
103 MHz
180
330/101T
27 MHz
220
330/221T
22 MHz
50
390/500T
82 MHz
220
390/221T
19 MHz
33
470/330T
103 MHz
47
470/470T
72 MHz
100
101/101T
16 MHz
STANDARD PART ORDERING INFORMATION
Package
Ordering Part Number
Pins
Style*
Tubes
Tape & Reel
24
QSOP
PAC100/150TQ/T
PAC100/150TQ/R
24
QSOP
PAC100/101TQ/T
PAC100/101TQ/R
24
QSOP
PAC150/470TQ/T
PAC150/470TQ/R
24
QSOP
PAC250/101TQ/T
PAC250/101TQ/R
24
QSOP
PAC250/201TQ/T
PAC250/201TQ/R
24
QSOP
PAC330/470TQ/T
PAC330/470TQ/R
24
QSOP
PAC330/101TQ/T
PAC330/101TQ/R
24
QSOP
PAC330/221TQ/T
PAC330/221TQ/R
24
QSOP
PAC390/500TQ/T
PAC390/500TQ/R
24
QSOP
PAC390/221TQ/T
PAC390/221TQ/R
24
QSOP
PAC470/330TQ/T
PAC470/330TQ/R
24
QSOP
PAC470/470TQ/T
PAC470/470TQ/R
24
QSOP
PAC101/101TQ/T
PAC101/101TQ/R
PAC T
R (
Ω
)
10
10
15
25
25
33
33
33
39
39
47
47
100
with 0 source impedance
RC Code
100/150T
100/101T
150/470T
250/101T
250/201T
330/470T
330/101T
330/221T
390/500T
390/221T
470/330T
470/470T
101/101T
Part Marking
PAC100/150TQ
PAC100/101TQ
PAC150/470TQ
PAC250/101TQ
PAC250/201TQ
PAC330/470TQ
PAC330/101TQ
PAC330/221TQ
PAC390/500TQ
PAC390/221TQ
PAC470/330TQ
PAC470/470TQ
PAC101/101TQ
* Also available in 300 mil wide SOIC package. Contact your
local CMD Sales Representative or the factory for availability.
Filter Cross Talk Test Circuit (T
A
=25
o
C)
50 Ohm
Pulse Generator
5 volt, 10 MHz,
> 1nS Rise /
Fall Time
V
50
V=Victim Voltage
©1993, 1996 CMD Corp. All rights reserved.
215 Topaz Street, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
Rev. 2 10/97
CALIFORNIA MICRO DEVICES
Filter Insertion Loss (S12, dB), Typical (T
A
= 25°C)
Representative Sample
ATTENUATION CURVES
10
Ω
Filters
15
Ω
Filter
PAC T
0
S12
(dB)
-20
0
S12
(dB) -10
15 pF
-20
100 pF
-40
10 MHz
0
S12 -10
(dB)
-20
-30
-40
-50
10 MHz
39
Ω
Filters
100 MHz
100 pF
200 pF
1 GHz
-50
10 MHz
47
Ω
Filters
100 MHz
25
Ω
Filters
100 MHz
1 GHz
-30
10 MHz
-10
S12
(dB)
-30
33
Ω
Filters
100 MHz
47 pF
1 GHz
47 pF
180 pF
220 pF
1 GHz
-10
S12
(dB)
-30
0
S12
(dB) -10
50 pF
220 pF
100 MHz
1 GHz
-20
33 pF
47 pF
100 MHz
1 GHz
-50
10 MHz
100
Ω
Filter
-30
10 MHz
-10
S12
(dB)
-30
-50
10 MHz
47 pF
100 MHz
1 GHz
S parameters are measured using a Hewlett Packard HP8753C Network Analyzer with a
HP85047A S-parameter Test Set.
© 1993, 1996 CMD Corp. All rights reserved.
10/97 Rev. 2
215 Topaz Street, Milpitas, California 95035
Tel: (408) 263-3214
Fax: (408) 263-7846
FPGA/CPLD
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