PI6PCIEB24ZDEX [PERICOM]
PLL Based Clock Driver, PI6 Series, 8 True Output(s), 0 Inverted Output(s), 4 X 4 MM, 0.75 MM HEIGHT, GREEN, MO-220, TQFN-20;
| 型号： | PI6PCIEB24ZDEX |
| 厂家： | 
PERICOM SEMICONDUCTOR CORPORATION |
| 描述： | PLL Based Clock Driver, PI6 Series, 8 True Output(s), 0 Inverted Output(s), 4 X 4 MM, 0.75 MM HEIGHT, GREEN, MO-220, TQFN-20 驱动 逻辑集成电路 |
| 文件： | 总7页 (文件大小：583K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI6PCIEB24
1:4 PCI Express® Clock Driver
Features
Description
Î Phase jitter filter for PCIe® 2.0 application
Î Four pairs of HCSL PCIe 2.0 Differential Clocks
Î Prop delay < 2ꢀ0ps (in PLL mode)
Î Low skew < ꢀ0ps
Pericom Semiconductor's PI6PCIEB24 is a PCI Express® (PCIe)
2.0 compliant high-speed, low-noise differential clock buffer. e
device distributes the input differential PCIe clock to four differ-
ential pairs of clock outputs with zero delay PLL.
Î Low jitter < ꢀ0ps cycle-to-cycle
Î < 1 ps additive RMS phase jitter
Î 100 MHz PLL Mode operation
Î 3.3V operation
Î Packaging (Pb-free and Green):
à 20-Pin 4.0mm x 4.0mm x0.7ꢀmm TQFN (ZD20)
Block Diagram
Pin Configuration
OE_0
OUT0
OUT0#
OUT1
OUT1#
1
2
3
4
5
15
14
13
12
11
VDD
OUT0
OUT0#
OE_0
OUT3
OUT3#
OE_3
OUT2
OUT2#
SRC
SRC#
OUT2
OUT2#
OUT3
OUT3#
OUT1
OE_3
PWRDWN#
PLL
PLL/BYPASS#
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PS9070A
09/01/10
10-0210
1
PI6PCIEB24
1:4 PCI Express® Clock Driver
Pin Descriptions
Pin Name
Type
Pin No
Description
SRC & SRC#
Input
19, 20
0.7V Differential SRC input from PI6C410 clock synthesizer
OUT[0:3] & OUT[0:3]# Output
2, 3, ꢀ, 6, 12, 11, 1ꢀ, 14 0.7V Differential outputs
IREF
Input
Power
Input
Power
Input
Input
16
External resistor connection to set the differential output current
V
1, 7, 10, 18
3.3V Power Supply for Outputs
DD
PWRDWN#
VDD_A
9
3.3V LVTTL active LOW input for power down operation
3.3V Power Supply for PLL
17
8
PLL/BYPASS#
OE_0, OE_3
When HIGH, PLL is enabled, When LOW, PLL is bypassed.
When HIGH, enables corresponding OUT0, OUT3 respectively.
4, 13
Ground connection is through the package metal plate underneath.
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PS9070A
09/01/10
10-0210
2
PI6PCIEB24
1:4 PCI Express® Clock Driver
Functionality
PWRDWN#
OUT
OUT#
1
0
Normal
Normal
Low
I
× 2
REF
Power Down (PWRDWN# assertion)
PWRDWN#
OUT
OUT#
Figure 1. Power down sequence
When PWRDWN# is asserted (Low), 2xI
current flows through OUT pin.
REF
Power Down (PWRDWN# De-assertion)
Tstable
<1ms
PWRDWN#
OUT
OUT#
Tdrive_PwrDwn#
<300us, >200mV
Figure 2. Power down de-assert sequence
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PS9070A
09/01/10
10-0210
3
PI6PCIEB24
1:4 PCI Express® Clock Driver
Current-mode output buffer characteristics of OUT[0:3], OUT[0:3]#
VDD
(3.3V 5ꢀ%
Slope ~ 1/Rs
RO
IOUT
ROS
Iout
0V
0.85V
VOUT = 0.85V max
Figure 2. Simplified diagram of current-mode output buffer
Differential Clock Buffer characteristics
Symbol
Minimum
Maximum
R
R
3000Ω
N/A
O
unspecified
N/A
unspecified
8ꢀ0mV
OS
V
OUT
Current Accuracy
Symbol
Conditions
Configuration Load
Min.
Max.
R
= 47ꢀΩ 1%
= 2.32mA
Nominal test load for given
configuration
REF
REF
I
V
= 3.30 ꢀ%
-12% I
+12% I
OUT
DD
NOMINAL
NOMINAL
I
I
refers to the expected current based on the configuration of the device.
NOMINAL
Differential Clock Output Current
Board Target Trace/Term Z
Reference R, Iref = V /(3xRr) Output Current
V
OH
@ Z
DD
100Ω
R
= 47ꢀΩ 1%,
= 2.32mA
REF
REF
I
= 6 x I
0.7V @ ꢀ0
REF
OH
(100Ω differential ≈ 1ꢀ% coupling ratio)
I
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PS9070A
09/01/10
10-0210
4
PI6PCIEB24
1:4 PCI Express® Clock Driver
Absolute Maximum Ratings (Over operating free-air temperature range)
Symbol
Parameters
Min.
Max.
Units
V
V
V
V
3.3V Core Supply Voltage
3.3V I/O Supply Voltage
Input High Voltage
Input Low Voltage
-0.ꢀ
-0.ꢀ
4.6
4.6
4.6
DD_A
DD
IH
V
-0.ꢀ
-6ꢀ
IL
Ts
Storage Temperature
ESD Protection
1ꢀ0
°C
V
V
2000
ESD
Stress beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
DC Electrical Characteristics (V = 3.3±5%, V
= 3.3±5%)
DD_A
DD
Symbol Parameters
Condition
Min.
Max.
Units
V
V
V
V
3.3V Core Supply Voltage
3.3V I/O Supply Voltage
3.3V Input High Voltage
3.3V Input Low Voltage
Input Leakage Current
3.13ꢀ
3.13ꢀ
2.0
3.46ꢀ
3.46ꢀ
DD_A
DD
IH
V
V
V
+ 0.3
DD
DD
V
SS
– 0.3
0.8
+ꢀ
IL
I
0 < V < V
IN
-ꢀ
μA
IK
DD
I
I
= 6 x I
,
12.2
REF
OH
I
Output High Current
mA
OH
= 2.32mA
1ꢀ.6
ꢀ
REF
C
C
Input Pin Capacitance
Output Pin Capacitance
Pin Inductance
3
IN
OUT
PIN
DD
SS
pF
6
L
7
nH
mA
°C
I
I
Power Supply Current
Power Down Current
Ambient Temperature
V
= 3.46ꢀV, F
= 100MHz
200
40
8ꢀ
DD
CPU
Driven outputs
T
-4ꢀ
A
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PS9070A
09/01/10
10-0210
ꢀ
PI6PCIEB24
1:4 PCI Express® Clock Driver
AC Switching Characteristics (V = 3.3±5%, VDD = 3.3±5%)
DD
_A
Symbol
Parameters
Min
Max.
Units Notes
F
9ꢀ
10ꢀ
700
12ꢀ
20
MHz
IN
T
/ T
Rise and Fall Time (measured between 0.17ꢀV to 0.ꢀ2ꢀV)
Rise and Fall Time Variation
17ꢀ
ps
2
2
2
rise fall
ps
DT
/ DT
fall
rise
Rise/Fall Matching
%
T
PLL Mode (PLL/BYPASS# = 1)
Cycle – Cycle Jitter
2ꢀ0
ꢀ0
ps
pd
T
jitter
ps
3, 4
2
V
V
Voltage High including overshoot
Voltage Low including undershoot
Absolute crossing point voltages
Total Variation of Vcross over all edges
Duty Cycle
660
-300
2ꢀ0
11ꢀ0
mV
mV
mV
mV
%
HIGH
LOW
2
V
cross
ΔV
ꢀꢀ0
140
ꢀꢀ
2
2
cross
T
T
4ꢀ
3
DC
Additive RMS phase jitter for PCIe GenII
Bypass mode (PLL/BYPASS# = 0)
<0
2.ꢀ
1
ps
ꢀ
jadd
T
6.ꢀ
ns
pd(bypass)
1. Test configuration is R = 33.2Ω, Rp = 49.9Ω, and 2pF.
s
2. Measurement taken from Single Ended waveform.
3. Measurement taken from Differential waveform.
4. Measurement taken using M1 data capture analysis tool.
2
2
ꢀ. Additive jitter is calculated from input and output RMS phase jitter using PCIe 2.0 filter by T
= √(output jitter) – (input jitter)
jadd
Configuration Test Load Board Termination
Rs
33Ω
5%
OUT
TLA
TLB
Rs
33Ω
5%
PI6PCIEB24
OUT#
2pF
5%
2pF
5%
Rp
49.9Ω
1%
Rp
49.9Ω
1%
475Ω
1%
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PS9070A
09/01/10
10-0210
6
PI6PCIEB24
1:4 PCI Express® Clock Driver
Packaging Mechanical: 20-Pin TQFN (ZD)
DATE: 09/11/08
DESCRIPTION: 20-Lead, Thin Fine Pitch Quad Flat No-Lead (TQFN)
ZD20
DOCUMENT CONTROL #: PD-2084
PACKAGE CODE:
REVISION: --
08-0456
(1-3)
Ordering Information
Ordering Code
Package Code
Package Description
PI6PCIEB24ZDE
ZD
20-pin, 4.0mm x 4.0mm, TQFN, Pb-Free and Green
1. ermal characteristics can be found on the company web site at www.pericom.com/packaging/
2. E = Pb-free and Green
3. Adding an X suffix = Tape/Reel
Pericom Semiconductor Corporation • 1-800-435-2336
www.pericom.com
PS9070A
09/01/10
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