MAX3873A Datasheet, PDF (6/12 Pages) Maxim Integrated Products – Low-Power, Compact 2.5Gbps/2.7Gbps Clock-Recovery and Data-Retiming IC

Low-Power, Compact 2.5Gbps or 2.7Gbps
Clock-Recovery and Data-Retiming IC
(T_A = +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
-50
PULLIN RANGE (RATESET = 0)
0
50
100
AMBIENT TEMPERATURE (°C)
BIT-ERROR RATIO
vs. INPUT AMPLITUDE
10^-2
10^-3
10^-4
10^-5
10^-6
10^-7
10^-8
10^-9
10^-10
0
1
2
3
4
5
INPUT VOLTAGE (mVp-p)
JITTER TOLERANCE vs. INPUT
DETERMINISTIC JITTER
1.0
0.9
f_JITTER = 1MHz
0.8
0.7
0.6 ^{fJITTER = 10MHz}
0.5
0.4
0.3
0.2
0.1 _{PRBS = 223 - 1}
0
0.05
0.10
0.15
0.20
DETERMINISTIC JITTER (UI_P-P)
JITTER TOLERANCE vs. PULSE-WIDTH
DISTORTION
1.0
0.9 ^{PRBS = 223 - 1 fJITTER = 1MHz}
0.8
0.7
0.6
0.5
f_JITTER = 10MHz
0.4
0.3
0.2 _{INPUT DATA FILTERED BY}
0.1 ^{1870MHz 4TH-ORDER}
BESSEL FILTER
0
-40 -30 -20 -10 0 10 20 30 40
INPUT PULSE-WIDTH DISTORTION (%)
PIN
1
2, 5, 6
3
4
7
8
9
NAME
RATESET
V_CC
SDI+
SDI-
FASTRACK
VCC_VCO
MODE
Pin Description
FUNCTION
Input Rate Select. Connect to TTL low for 2.488Gbps data and to TTL high for 2.67Gbps data.
3.3V Supply Voltage
Positive Serial Data Input
Negative Serial Data Input
PLL Fast Track Control, TTL Input. When FASTRACK is TTL high, the PLL is switched to a fast-
track mode for fast phase acquisition. When FASTRACK is TTL low, the PLL operates normally.
3.3V VCO Supply Voltage
Output Amplitude Mode Select. MODE = open sets the CML output amplitude to high; MODE =
high sets the output amplitude to medium; MODE = low sets the output amplitude to low.
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