Rainbow Electronics MAX3799 - Manual (Page 9)

MAX3799
1Gbps to 14Gbps, SFP+ Multirate Limiting
Amplifier and VCSEL Driver
_______________________________________________________________________________________ 9
Typical Operating Characteristics—Limiting Amplifier
(V CC = 3.3V, T A = +25°C, unless otherwise specified. Figure 1 shows the typical setup used for measurements. Registers are set to
default values unless otherwise noted, and the 3-wire interface is static during measurements. For testing, the RATE_SEL bit was
used and the RSEL pin was left open.)
RANDOM JITTER
vs. INPUT AMPLITUDE
MAX3799 toc01
INPUT AMPLITUDE (mV P-P )
RANDOM JITTER (ps)
1000 800 600 400 200
310
320
330
340
350
360
370
300
0 1200
RATE_SEL = 1
DETERMINISTIC JITTER vs.
INPUT AMPLITUDE AT 1.25Gbps
MAX3799 toc02
INPUT AMPLITUDE (mV P-P )
DETERMINISTIC JITTER (ps)
1000 800 600 400 200
5
7
9
11
13
15
17
19
21
23
25
3
0 1200
PATTERN = k28.5, RATE_SEL = 0
DETERMINISTIC JITTER
vs. INPUT AMPLITUDE
MAX3799 toc03
INPUT AMPLITUDE (mV P-P )
DETERMINISTIC JITTER (ps)
1000 800 600 400 200
2
3
4
5
6
7
1
0 1200
PATTERN = PRBS, RATE_SEL = 1
AT 8.5Gbps
AT 10.32Gbps
DETERMINISTIC JITTER
vs. DATA RATE
MAX3799 toc04
DATA RATE (Gbps)
DETERMINISTIC JITTER (ps)
12 10 2 4 6 8
3
4
5
6
7
8
9
10
2
0 14
RATE_SEL = 1
PATTERN = k28.5
BER vs. INPUT AMPLITUDE
MAX3799 toc05
INPUT AMPLITUDE (mV P-P )
BER
2.5 2.0 1.0 1.5
1.0E-01
1.0E-02
1.0E-03
1.0E-04
1.0E-05
1.0E-06
1.0E-07
1.0E-08
1.0E-09
1.0E-10
1.0E-11
1.0E-13
1.0E-12
0.5 3.0
RATE_SEL = 0
RATE_SEL = 1
OUTPUT EYE DIAGRAM AT 1.25Gbps
MAX3799 toc06
200ps/div
150mV/div
RATE_SEL = 0
OUTPUT EYE DIAGRAM AT 4.25Gbps
MAX3799 toc07
50ps/div
50mV/div
RATE_SEL = 1
OUTPUT EYE DIAGRAM AT 8.5Gbps
MAX3799 toc08
20ps/div
50mV/div
OUTPUT EYE DIAGRAM AT 10.32Gbps
MAX3799 toc09
20ps/div
50mV/div