ACS8515REV2.1T View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'ACS8515REV2.1T' PDF : 50 Pages View PDF
ACS8515 Rev2.1 LC/P
ADVANCED COMMUNICATIONS
Figure 11. Recommended Line Termination for PECL Input/Output Ports
FINAL
8kHz, 1.544/2.048,
6.48, 19.44, 38.88,
51.84, 77.76 or
155.52 MHz
8kHz, 1.544/2.048,
6.48, 19.44, 38.88,
51.84, 77.76 or
155.52 MHz
V DD
130R
ZO=50Ω
82R
ZO=50Ω
SEC1_POS
130R
SEC1_NEG
82R
GND
V DD
130R
ZO=50Ω
82R
ZO=50Ω
130R
SEC2_POS
SEC2_NEG
82R
GND
O1POS
O1NEG
VDD
130R
ZO=50Ω
82R
ZO=50Ω
130R
82R
GND
19.44, 38.88, 155.52,
311.04 MHz & DIG1
VDD = +3.3 V
Table 19. DC Characteristics: LVDS Input/Output Pad
Across all operating conditions, unless otherwise stated
PA R A M E T E R
SYMBOL
MIN
T YP
LVDS Input voltage range
Differential input voltage = 100 mV
VVRLVDS
0
-
LVDS Differential input threshold
VDITH
-100
-
LVDS Input Differential voltage
VIDLVDS
0.1
-
LVDS Input termination resistance
Must be placed externally across the
LVDS+/- input pins of ACS8515.
RTERM
95
100
Resistor should be 100 ohm with 5%
tolerance
LVDS Output high voltage
(Note 1)
VOHLVDS
-
-
LVDS Output low voltage
(Note 1)
VOLLVDS
0.885
-
LVDS Differential output voltage
(Note 1)
VODLVDS
250
-
LVDS Charge in magnitude of
differential output voltage for
complimentary states
VDOSLVDS
-
-
(Note 1)
LVDS output offset voltage
Temperature = 25°C
(Note 1)
VOSLVDS
1.125
-
Note 1. With 100 ! load between the differential outputs.
Revision 2.01/December 2005 Semtech Corp.
38
MAX
2.40
+100
1.4
105
UNITS
V
mV
V
W
1.585
V
-
V
450
mV
25
mV
1.275
V
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