MAX3873A
Low-Power, Compact 2.5Gbps or 2.7Gbps
Clock-Recovery and Data-Retiming IC
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
2.0
2.3
2.2
2.1
2.4
2.5
2.6
2.7
2.8
2.9
3.0
-50 0 50 100
PULLIN RANGE (RATESET = 0)
MAX3873A toc08
AMBIENT TEMPERATURE (°C)
FREQUENCY (GHz)
10
-2
10
-3
10
-4
10
-5
10
-6
10
-7
BIT-ERROR RATIO
vs. INPUT AMPLITUDE
MAX3873A toc09
INPUT VOLTAGE (mVp-p)
BIT ERROR RATIO
012345
10
-8
10
-9
10
-10
0
0.3
0.2
0.1
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0.05 0.10 0.15 0.20
JITTER TOLERANCE vs. INPUT
DETERMINISTIC JITTER
MAX3873A toc10
DETERMINISTIC JITTER (UI
P-P
)
SINUSOIDAL JITTER TOLERANCE (UI
P-P
)
f
JITTER
= 1MHz
f
JITTER
= 10MHz
PRBS = 2
23
- 1
0
0.2
0.1
0.4
0.3
0.6
0.5
0.7
0.9
0.8
1.0
-40 -20 -10-30 0 10203040
JITTER TOLERANCE vs. PULSE-WIDTH
DISTORTION
MAX3873A toc11
INPUT PULSE-WIDTH DISTORTION (%)
SINUSOIDAL JITTER TOLERANCE (UI
P-P
)
PRBS = 2
23
- 1
f
JITTER
= 1MHz
f
JITTER
= 10MHz
INPUT DATA FILTERED BY
1870MHz 4TH-ORDER
BESSEL FILTER
PIN NAME FUNCTION
1 RATESET Input Rate Select. Connect to TTL low for 2.488Gbps data and to TTL high for 2.67Gbps data.
2, 5, 6 V
CC
3.3V Supply Voltage
3 SDI+ Positive Serial Data Input
4 SDI- Negative Serial Data Input
7 FASTRACK
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.
8 VCC_VCO 3.3V VCO Supply Voltage
9 MODE
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.
