Datasheet
MAX3815
TMDS Digital Video Equalizer for DVI/HDMI
Cables
4 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(Typical values are at V
CC
= +3.3V, T
A
= +25°C, data pattern = 2
7
- 1 PRBS + 20 ones + 2
7
- 1 PRBS (inverted) + 20 zeros, unless
otherwise noted.)
EQUALIZER INPUT EYE AFTER 205ft OF GORE 89
CABLE (TOP) EQUALIZER OUTPUT (BOTTOM)
MAX3815 toc04
152ps/div
350mV/div
DATA RATE = 1.65Gbps
40dB CABLE SKIN-EFFECT LOSS AT 825MHz
EQUALIZER INPUT EYE AFTER 205ft OF GORE 89
CABLE (TOP) EQUALIZER OUTPUT (BOTTOM)
MAX3815 toc05
1ns/div
300mV/div
DATA RATE = 250Mbps
40dB CABLE SKIN-EFFECT LOSS AT 825MHz
EQUALIZER EYES AFTER 100ft MADISON DIGITAL
FLAT-PANEL CABLE, 28 AWG (DATA RATE = 1.65Gbps)
MAX3815 toc06
200ps/div
350mV/div
EQUALIZER EYES AFTER 100ft MADISON DIGITAL
FLAT-PANEL CABLE, 28 AWG (DATA RATE = 350Mbps)
MAX3815 toc07
1ns/div
350mV/div
EQUALIZER EYES AFTER 3ft CABLE
(DATA RATE = 1.65Gbps)
MAX3815 toc08
200ps/div
350mV/div
JITTER vs. DATA RATE AFTER 205ft CABLE
WITH 40dB SKIN-EFFECT LOSS AT 825MHz
MAX3815 toc09
DATA RATE (Mbps)
JITTER (ps
P-P
)
14501250450 650 850 1050
20
40
60
80
100
120
0
250 1650
GORE 89 CABLE
RESIDUAL JITTER =
DJ + 14.2 x RJ
DETERMINISTIC JITTER
TOTAL JITTER vs. POWER-SUPPLY
NOISE FREQUENCY (DATA RATE = 1.65Gbps)
MAX3815 toc10
FREQUENCY (kHz)
TOTAL JITTER (ps
P-P
)
10,000100010 100
110
120
130
140
150
160
170
180
100
1 100,000
NOISE AMPLITUDE: 200mV
P-P
DATA THROUGH 100ft MADISON DIGITAL
FLAT-PANEL CABLE, 28AWG
0
0.2
0.1
0.4
0.3
0.5
0.6
0 10050 150 200
DETERMINISTIC JITTER vs. CABLE LENGTH
(TENSOLITE TWIN-AX 28 AWG)
MAX3815 toc11
CABLE LENGTH (ft)
DETERMINISTIC JITTER (UI
P-P
)
1.65Gbps
800Mbps
250Mbps
NO EQ
WITH
MAX3815 EQ
RESIDUAL JITTER vs. SIGNAL AMPLITUDE
INPUT TO CABLE (DATA RATE = 1.65Gbps)
MAX3815 toc12
DIFFERENTIAL AMPLITUDE (mV
P-P
)
RESIDUAL JITTER (ps
P-P
)
1.21.00.8
70
80
90
100
110
120
60
0.6 1.4
205ft OF GORE 89 CABLE WITH 40dB SKIN-
EFFECT LOSS AT 825MHz
RESIDUAL JITTER = DJ + 14.2 X RJ