GS1504-CTD(2000) 데이터 시트보기 (PDF) - Gennum -> Semtech
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GS1504-CTD Datasheet PDF : 12 Pages
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AC ELECTRICAL CHARACTERISTICS
VCC = 5V, VEE = 0V, TA = 0°C to 70°C, Data Rate = 1.485Gb/s
PARAMETER
CONDITIONS
SYMBOL MIN TYP MAX
Jitter
100m (8281), PRN and pathological
-
80 135
Equalization
Belden 8281
-
100
-
Belden 1694
-
150
-
Output Rise/Fall Time
20% - 80%
-
130 270
Input Resistance
Single Ended
-
2.8
.
Input Capacitance
Single Ended
-
1
-
Output Resistance
Single Ended
-
50
-
Output Signal Swing SDO, SDO
Into 50Ω Loads; See Figure 21.
160 200 240
TEST LEVELS: 1. 100% tested at 25°C. 2. Guaranteed by design. 3. Correlated Value. 4. Using EB1504
UNITS
ps p-p
m
m
ps
kΩ
pF
Ω
mVp-p
TEST
LEVEL
1
1
3
1
2
2
2
1
PIN CONNECTIONS
CLI
VCC
VEE
SDI
SDI
VEE
MCLADJ
NC
1
16
2
15
3
14
4 GS1504 13
TOP
5 VIEW 12
6
11
7
10
8
9
CD/MUTE
VCC
VEE
SDO
SDO
VEE
NC
NC
PIN DESCRIPTIONS
NUMBER
SYMBOL
1
CLI
2, 15
3, 6, 11, 14
4, 5
7
VCC
VEE
SDI, SDI
MCLADJ
8, 9, 10
12, 13
16
NC
SDO, SDO
CD/Mute
TYPE
O
I
I
I
I
-
O
I/O
DESCRIPTION
Cable Length Indication. Provides a voltage output representing the amount of cable being
equalized. See figures 19 and 20. The CLI voltage is an approximation of the cable length
being equalized. It is intended as a guide for troubleshooting the initial design and not as an
accurate indication of cable length.
Most positive supply voltage.
Most negative supply voltage.
Differential Input Pins. AC coupled termination is recommended.
Adjusts the maximum amount of cable to be equalized (from 0m to the maximum cable
length). The output is muted (latched to the last state) when the maximum cable length is
reached. To achieve maximum cable length, this pin should be left open. See figures 10 - 12.
No Connect. Do not connect these pins to supply or ground.
Differential Serial Data Output Pins, with 50Ω output resistance.
Carrier Detect/Mute Indicator/Control. When the CD/Mute output is low, the carrier is present
and the data output is active. When the CD/Mute output is high, the carrier is not present and
the data output is muted (latched to the last state). This indicates that the maximum cable
length as set by MCLADJ has been reached.
The above default CD/Mute function can be overwritten as follows: if the CD/Mute pin is tied
to ground the data output will not mute and the MCLADJ setting is overwritten. If the mute pin
is tied high, the data output will always mute and the MCLADJ setting is overwritten.
3
522 - 05 - 02
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