DS92LV2421_16 Datasheet, PDF (16/59 Pages) Texas Instruments – 10-MHz to 75-MHz, 24-Bit Channel Link II Serializer And Deserializer

DS92LV2421, DS92LV2422
SNLS321C – MAY 2010 – REVISED MAY 2016
www.ti.com
Switching Characteristics – Deserializer (continued)
Over recommended operating supply and temperature ranges (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
CLKOUT = 10 MHz
500
t_DPJ
Deserializer period jitter
SSC[3:0] = OFF⁽³⁾⁽²⁾ CLKOUT = 65 MHz
550
CLKOUT = 75 MHz
435
CLKOUT = 10 MHz
375
t_DCCJ
Deserializer cycle-to-cycle jitter
SSC[3:0] =
OFF ^{(4) (2) (5)}
CLKOUT = 65 MHz
500
CLKOUT = 75 MHz
460
t_IJT
Deserializer input jitter tolerance
(see Figure 16)
EQ = OFF,
SSCG = OFF,
CLKOUT = 75 MHz
jitter freq < 2 MHz
jitter freq > 6 MHz
0.9
0.5
BIST MODE
t_PASS
BIST PASS valid time
(see Figure 17)
BISTEN = 1
1
SSCG MODE
f_DEV
Spread spectrum clocking
deviation frequency
CLKOUT = 10 to 65 MHz, SSC[3:0] = ON
±0.5%
f_MOD
Spread spectrum clocking
modulation frequency
CLKOUT = 10 to 65 MHz, SSC[3:0] = ON
8
MAX
1000
1250
900
900
1150
1000
UNIT
ps
ps
UI ⁽⁶⁾
10 μs
±2%
100 kHz
(3) t_DPJ is the maximum amount the period is allowed to deviate over many samples.
(4) Specification is verified by characterization and is not tested in production.
(5) t_DCCJ is the maximum amount of jitter between adjacent clock cycles.
(6) UI – Unit Interval is equivalent to one serialized data bit width (1 UI = 1 / [28 x CLK]). The UI scales with clock frequency.
A
C_A
A' Scope
50:
50:
B
C_B
B'
50:
50:
Figure 1. Serializer Test Circuit
DOUT+
DOUT-
GND
(DOUT+) - (DOUT+)
VOD+
VOS
VOD-
VOD+
VODp-p
0V
VOD-
Figure 2. Serializer Output Waveforms
16
Submit Documentation Feedback
Copyright © 2010–2016, Texas Instruments Incorporated
Product Folder Links: DS92LV2421 DS92LV2422