9ZX21201 Datasheet, PDF (6/16 Pages) Integrated Device Technology – 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN2/3 AND QPI

9ZX21201
12-Output Differential Z-buffer for PCIe Gen2/3 and QPI
Electrical Characteristics - Clock Input Parameters
T_A = T_COM; Supply Voltage V_DD/V_DDA = 3.3 V +/-5%
PARAMETER
SYMBOL
CONDITIONS
Input High Voltage - DIF_IN V_IHDIF
Differential inputs
(single-ended measurement)
Input Low Voltage - DIF_IN V_ILDIF
Differential inputs
(single-ended measurement)
Input Common Mode
Voltage - DIF_IN
V_COM
Common Mode Input Voltage
Input Amplitude - DIF_IN
Input Slew Rate - DIF_IN
V_SWING
dv/dt
Peak to Peak value
Measured differentially
Input Leakage Current
I_IN
V_IN = V_{DD ,} V_IN = GND
Input Duty Cycle
d_tin
Measurement from differential wavefrom
Input Jitter - Cycle to Cycle J_DIFIn
Differential Measurement
1 _{Guaranteed by design and characterization, not 100% tested in production.}
2_{Slew rate measured through +/-75mV window centered around differential zero}
MIN
TYP
600
800
V_SS - 300
0
300
300
0.4
-5
45
0
MAX
1150
UNITS NOTES
mV
1
300
mV
1
1000 mV
1
1450 mV
1
8
V/ns 1,2
5
uA
1
55
%
1
125
ps
1
Electrical Characteristics - DIF 0.7V Current Mode Differential Outputs
T_A = T_COM; Supply Voltage V_DD/V_DDA = 3.3 V +/-5%
PARAMETER
SYMBOL
CONDITIONS
Slew rate
Trf
Scope averaging on
Slew rate matching
ΔTrf
Slew rate matching, Scope averaging on
MIN TYP MAX UNITS NOTES
1
2
4 V/ns 1, 2, 3
8
20
% 1, 2, 4
Voltage High
Voltage Low
VHigh
VLow
Statistical measurement on single-ended signal _{660 705 850}
1
using oscilloscope math function. (Scope
mV
averaging on)
-150 1 150
1
Max Voltage
Min Voltage
Vmax
Vmin
Measurement on single ended signal using
725 1150 _mV
1
absolute value. (Scope averaging off)
-300 -22
1
Vswing
Vswing
Scope averaging off
300 1407
mV 1, 2
Crossing Voltage (abs)
Crossing Voltage (var)
Vcross_abs
Δ-Vcross
Scope averaging off
Scope averaging off
250 309 550 mV 1, 5
22 140 mV 1, 6
1_{Guaranteed by design and characterization, not 100% tested in production. IREF = VDD/(3xRR). For RR = 412Ω (1%), IREF = 2.7mA.}
I_OH = 6.4 x I_REF and V_OH = 0.7V @ Z_O=85Ω differential impedance.
2 _{Measured from differential waveform}
3 _{Slew rate is measured through the Vswing voltage range centered around differential 0V. This results in a +/-150mV window around}
differential 0V.
4 _{Matching applies to rising edge rate of Clock / falling edge rate of Clock#. It is measured in a +/-75mV window centered on the}
average cross point where Clock rising meets Clock# falling. The median cross point is used to calculate the voltage thresholds the
oscilloscope uses for the edge rate calculations.
5 _{Vcross is defined as voltage where Clock = Clock# measured on a component test board and only applies to the differential rising}
edge (i.e. Clock rising and Clock# falling).
6 _{The total variation of all Vcross measurements in any particular system. Note that this is a subset of V_cross_min/max (V_cross}
absolute) allowed. The intent is to limit Vcross induced modulation by setting V_cross_delta to be smaller than V_cross absolute.
Electrical Characteristics - Current Consumption
T_A = T_COM; Supply Voltage V_DD/V_DDA = 3.3 V +/-5%
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS NOTES
Operating Current
Powerdown Current
I_DDVDD
I_DDVDDA
I_DDVDDPD
I_DDVDDAPD
133MHz, C_L = Full load; VDD rail, Zo=85Ω
133MHz, C_L = Full load; VDD rail, Zo=85Ω
Power Down, VDD rail, Zo=85Ω
Power Down, VDD rail, Zo=85Ω
260
275
mA
1
13
20
mA
1
2
6
mA
1
1.3
2
mA
1
1_{Guaranteed by design and characterization, not 100% tested in production.}
IDT^® 12-Output Differential Z-buffer for PCIe Gen2/3 and QPI
6
1682B- 12/08/11