XPGA Datasheet, PDF (25/89 Pages) Lattice Semiconductor – The ispXPGA architecture

Lattice Semiconductor
ispXPGA Family Data Sheet
sysIO Differential Standards DC Electrical Characteristics
Parameter
Description
Test Conditions
LVDS¹
V_INP, V_INM
V_THD
V_CM
I_IN
V_OH
V_OL
V_OD
∆V_OD
V_OS
∆V_OS
I_OSD
Input voltage
Differential input threshold
Input Common Mode voltage
Input current
Output High Voltage for V_OP or V_OM
Output Low Voltage for V_OP or V_OM
Output Voltage Differential
Change in V_OD between high and low
Output Voltage Offset
Change in V_OS between H and L
Output short circuit current
Half the sum of the two inputs
Power on or Power off
RT = 100 Ohm
RT = 100 Ohm
|V_OP - V_OM|, R_T = 100 ohm
|V_OP + V_OM|/2, R_T = 100 ohm
V_OD = 0V Driver outputs
shorted
BLVDS¹
V_INP, V_INM
V_THD
V_CM
I_IN
V_OH
V_OL
V_OD
∆V_OD
V_OS
∆V_OS
I_OSD
Input voltage
Differential input threshold
Input Common Mode voltage
Input current
Output High Voltage for V_OP or V_OM
Output Low Voltage for V_OP or V_OM
Output Voltage Differential
Change in V_OD Between H and L
Output Voltage Offset
Change in V_OS Between H and L
Output Short Circuit Current
Half the sum of the two inputs
Power on or Power off
R_T = 27Ω
R_T = 27Ω
|V_OP - V_OM|, RT = 27Ω
|V_OP + V_OM| /2, RT = 27Ω
V_OD = 0. Driver Outputs
Shorted.
1. V_OP and V_OM are the two outputs of the LVDS/BLVDS output buffer.
Min.
0V
+/-100mV
0.05V
—
—
0.9V
250mV
—
1.125V
—
—
0V
+/-100mV
0.05V
—
—
0.95V
240mV
1.1V
Typ.
—
—
—
—
1.38V
1.03V
350mV
—
1.25V
—
—
—
—
—
—
1.4V
1.1V
300mV
1.3V
36mA
Max.
2.4V
—
2.35V
+/-10uA
1.60V
—
450mV
50mV
1.375V
50mV
24mA
2.4V
—
2.35V
+/-10uA
1.80V
—
460mV
27mV
1.5V
27mV
65mA
LVPECL¹
DC
Parameter
Parameter Description
Min. Max. Min. Max. Min. Max. Units
V_CCO
3.0
3.3
3.6
V
V_IH
Input Voltage High
1.49
2.72
1.49
2.72
1.49
2.72
V
V_IL
Input Voltage Low
0.86 2.125 0.86 2.125 0.86 2.125
V
V_OH
Output Voltage High
1.8
2.11
1.92
2.28
2.13
2.41
V
V_OL
Output Voltage Low
0.96
1.27
1.06
1.43
1.3
1.57
V
V_DIFF
Differential Input voltage
0.3
—
0.3
—
0.3
—
V
1. These values are valid at the output of the source termination pack as shown above with 100-ohm differential load only (see Figure 22).
The V_OH levels are 200mV below the standard LVPECL levels and are compatible with devices tolerant of the lower common mode ranges.
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