PI2PCIE2412

PI2PCIE2412
1.8V, PCI Express Gen2 Compliant, 4-Differential
Channel, 2:1 Mux/DeMux Switch
Features
Description
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Pericom Semiconductor’s PI2PCIE2412 is an 8 to 4 differential
channel multiplexer/demultiplexer switch. This solution can
switch 2 full PCI Express, Gen2, lanes to one of two locations.
Using a unique design technique, Pericom has been able to
minimize the impedance of the switch such that the attenuation
observed through the switch is negligible. The unique design
technique also offers a layout targeted for PCI Express signals,
which minimizes the channel to channel skew as well as channel
to channel crosstalk as required by the PCI Express specification.
4 Differential Channel, 2:1 Mux/DeMux
PCI Express, Gen 2 Performance, 5.0Gbps
Low Bit-to-Bit Skew , 7ps max (between '+' and '-' bits)
Low Crosstalk: [email protected] GHz
Low Off Isolation: [email protected] GHz
VDD Operating Range: +1.5V to +1.8V ±10%
ESD Tolerance: 5kV HBM I/O; 2kV HBM select pin
Low channel-to-channel skew, 35ps max
Packaging (Pb-free & Green):
– 42-contact, TQFN (ZH42)
Application
Routing of PCI-Express, Gen2, signals with low signal attenuation.
Pin Description
A0+
B0+
A0-
B0-
A1+
B1+
A1-
B1-
VDD
GND
VDD
GND
Block Diagram
GND
A0+
A0GND
VDD
A1+
A1VDD
SEL
GND
A2+
A2VDD
GND
A3+
A3GND
C0+
C0C1+
C1-
A2+
B2+
A2-
B2-
A3+
B3+
A3-
B3C2+
C2C3+
C3-
SEL
Truth Table
SEL
AN to BN
L
AN to CN
H
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42 41 40 39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
B0+
B0B1+
B1C0+
C0C1+
C1VDD
B2+
B2B3+
B3C2+
C2C3+
C3-
18 19 20 21
VDD
GND
VDD
GND
Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
1
03/26/2014
www.pericom.com
PI2PCIE2412
1.8V, PCI Express Gen2 Compliant, 4-Differential
Channel, 2:1 Mux/DeMux Switch
Pin Description
Pin #
2
3
6
7
11
12
15
16
38
37
36
35
29
28
27
26
34
33
32
31
25
24
23
22
Pin Name
A0+
A0–
A1+
A1–
A2+
A2–
A3+
A3–
B0+
B0−
B1+
B1−
B2+
B2−
B3+
B3−
C0+
C0–
C1+
C1–
C2+
C2–
C3+
C3−
I/O
Description
I/O
Signal I/O, Channel 0, Port A
I/O
Signal I/O, Channel 1, Port A
I/O
Signal I/O, Channel 2, Port A
I/O
Signal I/O, Channel 3, Port A
I/O
Signal I/O, Channel 0, Port B
I/O
Signal I/O, Channel 1, Port B
I/O
Signal I/O, Channel 2, Port B
I/O
Signal I/O, Channel 3, Port B
I/O
Signal I/O, Channel 0, Port C
I/O
Signal I/O, Channel 1, Port C
I/O
Signal I/O, Channel 2, Port C
I/O
Signal I/O, Channel 3, Port C
9
SEL
I
VDD
Pwr
1.5V to 1.8V (±0.1V) Positive Supply Voltage
GND
Pwr
Power ground
5, 8, 13,18, 20, 30,
40, 42
1, 4, 10, 14, 17, 19,
21, 39, 41, Center
Pad
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Operation mode Select
(when SEL=0: A→B, when SEL=1: A→C
2
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03/26/2014
PI2PCIE2412
1.8V, PCI Express Gen2 Compliant, 4-Differential
Channel, 2:1 Mux/DeMux Switch
Maximum Ratings
(Above which useful life may be impaired. For user guidelines, not tested.)
Storage Temperature .....................................................–65°C to +150°C
Supply Voltage to Ground Potential ................................–0.5V to +2.5V
DC Input Voltage ............................................................... –0.5V to VDD
DC Output Current ....................................................................... 120mA
Power Dissipation ............................................................................ 0.5W
Note: Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the device. This
is a stress rating only and functional operation of the device
at these or any other conditions above those indicated in the
operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect reliability.
DC Electrical Characteristics for Switching over Operating Range
(TA = –40°C to +85°C, VDD = 1.5V to 1.8V ±10%)
Parameters
Test Conditions(1)
Description
Typ(2)
Min
Max
Units
0.35 x
VDD
V
0.65 x
VDD
VIH
Input HIGH Voltage
Guaranteed HIGH level
VIL
VIK
Input LOW Voltage
Guaranteed LOW level
Clamp Diode Voltage
VDD = Max., IIN = –18mA
IIH
Input HIGH Current
VDD = Max., VIN = VDD
±5
IIL
Input LOW Current
VDD = Max., VIN = GND
±5
–0.5
–0.7
–1.2
µA
Power Supply Characteristics
Parameters
IDD
Test Conditions(1)
Description
Quiescent Power Supply Current
Typ.(2)
Min.
VDD = Max., VIN = GND or VDD
Max.
Units
350
µA
Switching Characteristics
(TA= -40º to +85ºC, VDD = 1.8V±10%)
Parameters
Description
Min.
Max.
Units
tPZH, tPZL
Line Enable Time - SEL to AN, BN, CN
0.5
8.0
tPHZ, tPLZ
Line Disable Time - SEL to AN, BN, CN
0.5
8.0
tb-b
Bit-to-bit skew within the same differential pair
7
ps
tch-ch
Channel-to-channel skew
35
ps
ns
Dynamic Electrical Characteristics Over the Operating Range
(TA= -40º to +85ºC, VDD = 1.8V±10%, GND=0V)
Parameters
Description
Test Conditions
Min.
Typ.(2)
XTALK
Crosstalk
See Fig. 1 for Measurement Setup, f= 3 GHz
f = 100 MHz
-23dB
-58dB
OIRR
OFF Isolation
See Fig. 2 for Measurement Setup, f= 3 GHz
f = 100 MHz
-23dB
-58dB
ILOSS
Differential
Insertion Loss
f= 3 GHz
BW
Bandwidth -3dB
Max.
Units
dB
-2
dB
4.1
GHz
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VDD = 1.8V, Ta = 25°C ambient and maximum loading.
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03/26/2014
PI2PCIE2412
1.8V, PCI Express Gen2 Compliant, 4-Differential
Channel, 2:1 Mux/DeMux Switch
HP4396B
R
S
T
HP11667A
PI2PCIE2412
50-ohm
100
-ohm
50-ohm
50-ohm
100
-ohm
Fig 1. Crosstalk Setup
HP4396B
R
S
T
HP11667A
50-ohm
PI2PCIE2412
50-ohm
50-ohm
100
-ohm
Fig 2. Off-isolation setup
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03/26/2014
PI2PCIE2412
1.8V, PCI Express Gen2 Compliant, 4-Differential
Channel, 2:1 Mux/DeMux Switch
Fig 3. Crosstalk
Fig 4. Off Isolation
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03/26/2014
PI2PCIE2412
1.8V, PCI Express Gen2 Compliant, 4-Differential
Channel, 2:1 Mux/DeMux Switch
Fig 5. Insertion Loss
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03/26/2014
PI2PCIE2412
1.8V, PCI Express Gen2 Compliant, 4-Differential
Channel, 2:1 Mux/DeMux Switch
Test Circuit for Electrical Characteristics(1-5)
2 x VDD
VDD
200-ohm
VIN
Pulse
Generator
VOUT
D.U.T
4pF
CL
RT
200-ohm
Notes:
1. CL = Load capacitance: includes jig and probe capacitance.
2. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator
3. Output 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
output 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
4. All input impulses are supplied by generators having the following characteristics: PRR ≤ MHz, ZO = 50Ω, tR ≤ 2.5ns, tF ≤ 2.5ns.
5. The outputs are measured one at a time with one transition per measurement.
Switching Waveforms
SEL
VDD/2
VDD/2
VDD
0V
Output 1
tPZL
tPLZ
VDD/2
VOH
VOL + 0.15V
tPHZ
tPZH
VOH – 0.15V
VDD/2
VOL
VOH
VOL
Output 2
Voltage Waveforms Enable and Disable Times
Switch Positions
Test
Switch
tPLZ, tPZL (output on B-side)
2 x VDD
tPHZ, tPZH (output on B-side)
GND
Prop Delay
Open
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03/26/2014
PI2PCIE2412
1.8V, PCI Express Gen2 Compliant, 4-Differential
Channel, 2:1 Mux/DeMux Switch
Test Circuit for Dynamic Electrical Characteristics
Port1
Network Analyzer
Port2
D.U.T.
Applications Information
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd
PCI Express Application Specific Measurements and Test Set-up
Figure 5: Test Setup
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03/26/2014
PI2PCIE2412
1.8V, PCI Express Gen2 Compliant, 4-Differential
Channel, 2:1 Mux/DeMux Switch
Figure 6: 5 Gbps RX signal eye of the PCI-SIG compliance software test using PI2PCIE2412 + 16" test card
Figure 7. 5 Gbps RX signal eye of the PCI-SIG compliance software test with no switch + w/ 16" test card
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03/26/2014
PI2PCIE2412
1.8V, PCI Express Gen2 Compliant, 4-Differential
Channel, 2:1 Mux/DeMux Switch
Packaging Mechanical: 42-Contact TQFN (ZH)
Notes:
1. All dimensions are in millimeters. Angles in degrees.
2. Coplanarity applies to the exposed pad as well as the terminals.
3. Refer JEDEC MO-220.
4. Recommended land pattern is for reference only.
5. Thermal pad soldering area
DATE: 11/14/12
DESCRIPTION: 42-contact Thin Fine Pitch Quad Flat No-Lead (TQFN)
PACKAGE CODE: ZH42
DOCUMENT CONTROL #: PD-2035
REVISION:D
12-0529
Ordering Information
Ordering Code
PI2PCIE2412ZHEX
Package Code
Package Description
ZH
42-contact, Thin Fine Pitch Quad Flat No-Lead (TQFN)
Notes:
• Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
• "E" denotes Pb-free and Green
• Adding an "X" at the end of the ordering code denotes tape and reel packaging
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
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