ICS9DS400 Datasheet, PDF (7/19 Pages) Integrated Device Technology – Four Output Differential Buffer for PCIe Gen 2 with Spread

ICS9DS400
Four Output Differential Buffer for PCIe for Gen 2 with Spread
Advance Information
Electrical Characteristics - DIF 0.7V Current Mode Differential Pair
TA =Over the Specified Operating Range; VDD = 3.3 V +/-5%; C_L =2pF, R_S=33Ω, R_P=49.9Ω, R_REF=475Ω
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
Current Source Output
Impedance
Zo¹
3000
Voltage High
VHigh _{Statistical measurement on single ended} 660
850
Voltage Low
VLow ^{signal using oscilloscope math function.} -150
150
Max Voltage
Min Voltage
Crossing Voltage (abs)
Crossing Voltage (var)
Rise Time
Fall Time
Rise Time Variation
Fall Time Variation
Duty Cycle
Skew, Input to Output
Skew, Output to Output
Jitter, Cycle to cycle
Jitter, Phase
Vovs
Vuds
Vcross(ab
s)
d-Vcross
t_r
t_f
d-t_r
d-t_f
d_t3
t_pdBYP
t_pdPLL
t_sk3
t_jcyc-cyc
t_jphaseBYP
Measurement on single ended signal
using absolute value.
Variation of crossing over all edges
V_OL = 0.175V, V_OH = 0.525V
V_OH = 0.525V V_OL = 0.175V
Measurement from differential wavefrom
Bypass Mode, V_T = 50%
PLL Mode V_T = 50%, Spread Off
V_T = 50%
PLL mode
Additive Jitter in Bypass Mode
PCIe Gen1 phase jitter
(Additive in Bypass Mode)
PCIe Gen 2 Low Band phase jitter
(Additive in Bypass Mode)
PCIe Gen 2 High Band phase jitter
(Additive in Bypass Mode)
PCIe Gen 1 phase jitter
-300
250
175
175
45
2500
-250
1150
550
140
700
700
125
125
55
4500
250
50
50
50
10
0.1
0.5
86
t_jphasePLL
PCIe Gen 2 Low Band phase jitter
3
PCIe Gen 2 High Band phase jitter
3.1
1_{Guaranteed by design and characterization, not 100% tested in production.}
2 _{IREF = VDD/(3xRR). For RR = 475Ω (1%), IREF = 2.32mA. IOH = 6 x IREF and VOH = 0.7V @ ZO=50Ω.}
3 Measured from differential waveform
4 _{See http://www.pcisig.com for complete specs}
5 _{Device driven by 932S421C or equivalent.}
UNITS NOTES
Ω
1
1,2
mV
1,2
mV
1
1
mV
1
mV
ps
ps
ps
ps
%
ps
ps
ps
ps
ps
ps
(pk2pk)
ps
(rms)
ps
(rms)
ps
(pk2pk)
ps
(rms)
ps
(rms)
1
1
1
1
1
1
1
1
1
1,3
1,3
1,4,5
1,4,5
1,4,5
1,4,5
1,4,5
1,4,5
IDT^TM/ICS^TM Four Output Differential Buffer for PCIe Gen 2 with Spread
7
1626 09/17/09