EBE82FF4A1RQ Datasheet, PDF (15/23 Pages) Elpida Memory – 8GB Fully Buffered DIMM

EBE82FF4A1RQ
Differential Transmitter Output Specifications*¹
Parameter
Symbol
min.
Differential peak-to-peak
output voltage for large
VTX-DIFFp-p_L
900
voltage swing
Differential peak-to-peak
output voltage for regular VTX-DIFFp-p_R
800
voltage swing
Differential peak-to-peak
output voltage for small
VTX-DIFFp-p_S
520
voltage swing
DC common code
output voltage for large
VTX-CM_L

voltage swing
DC common code
output voltage for small
voltage swing
De-emphasized differential
output voltage ratio for
-3.5dB de-emphasis
De-emphasized differential
output voltage ratio for
-6dB de-emphasis
VTX-CM_S
VTX-DE-3.5-Ratio
VTX-DE-6.0-Ratio
135
−3.0
−5.0
AC peak-to-peak common
mode output voltage for large VTX-CM-ACp-p L

swing
AC peak-to-peak common
mode output voltage for
VTX-CM-ACp-p R

regular swing
AC peak-to-peak common
mode output voltage for small VTX-CM-ACp-p S

swing
Maximum single-ended
voltage in EI condition,
VTX-IDLE-SE

DC + AC
Maximum single-ended
voltage in EI condition,
DC only
VTX-IDLE-SE-DC

Maximum peak-to-peak
differential voltage in EI
condition
VTX-IDLE-DIFFp-p 
Single-ended voltage
(w.r.t.VSS) on D+/D-
VTX-SE
−75
Minimum TX eye width
TTX-Eye-MIN
0.7
Maximum TX deterministic
jitter
TTX-DJ-DD

Instantaneous pulse width TTX-PULSE
0.85
Differential TX output rise/fall TTX-RISE,
time
TTX-FALL
30
Mismatch between rise and
fall times
TTX-RF-MISMATCH

Differential return loss
RLTX-DIFF
8
Common mode return loss RLTX-CM
6
max.
1300


375
280
−4.0
Unit
Comments
mV
VTX-DIFFp-p = 2 × | VTX-D+ − VTX-D- |
Measured as note 2
mV
VTX-DIFFp-p = 2 × | VTX-D+ − VTX-D- |
Measured as note 2
mV
VTX-DIFFp-p = 2 × | VTX-D+ − VTX-D- |
Measured as note 2
Defined as:
mV
VTX-CM = DC (avg) of |VTX-D+
+ VTX-D-|/2
Measured as note 2
Defined as:
mV
VTX-CM = DC (avg) of |VTX-D+ + VTX-D-|/2
Measured as note 2. See also note 3
dB
2, 4, 5
−7.0
90
80
70
50
dB
2, 4, 5
VTX-CM-AC =
mV
Max |VTX-D+ + VTX-D-|/2 – Min |VTX-D+
+ VTX-D-|/2
Measured as note 2. See also note 6
VTX-CM-AC =
mV
Max |VTX-D+ + VTX-D-|/2 – Min |VTX-D+
+ VTX-D-|/2
Measured as note 2. See also note 6
VTX-CM-AC =
mV
Max |VTX-D+ + VTX-D-|/2 – Min |VTX-D+
+ VTX-D-|/2
Measured as note 2. See also note 6
mV
7, 8
20
mV
7, 8, 9
40
mV
8
750
mV
2, 10

UI
2, 11, 12
0.2
UI
2, 11, 12, 13

UI
14
90
ps
Given by 20%-80% voltage levels.
Measured as note 2
20
ps

dB
Measured over 0.1GHz to 2.4GHz.
See also note 15

dB
Measured over 0.1GHz to 2.4GHz.
See also note 15
Preliminary Data Sheet E1242E20 (Ver. 2.0)
15