MAX3646 Maxim Integrated Products, MAX3646 Datasheet - Page 3

• Manufacturer Part Number: MAX3646
• Description: 155Mbps to 622Mbps Sff/sfp Laser Driver
• Manufacturer: Maxim Integrated Products

www.DataSheet4U.com
ELECTRICAL CHARACTERISTICS (continued)
(V
otherwise noted.) (Notes 1, 2)
Note 1: AC characterization is performed using the circuit in Figure 2 using a PRBS 2
Note 2: Specifications at -40°C are guaranteed by design and characterization.
Note 3: Excluding I
Note 4: Power-supply noise rejection (PSNR) = 20log
Note 5: The minimum required voltage at the OUT+ and OUT- pins is +0.75V.
Note 6: Guaranteed by design and characterization.
Note 7: Tested with 00001111 pattern at 622Mbps.
Note 8: DJ includes pulse-width distortion (PWD).
APC Loop Time Constant
APC Setting Stability
APC Setting Accuracy
I
Range by Bias
I
Range by Temperature
Threshold-Setting Range for
Temperature Compensation
LASER SAFETY AND CONTROL
Bias and Modulation Turn-Off
Delay
Bias and Modulation Turn-On
Delay
Threshold Voltage at Monitor Pins
INTERFACE SIGNALS
TX_DISABLE Input High
TX_DISABLE Input Low
TX_DISABLE Input Current
TX_FAULT Output Low
Shutdown Output High
Shutdown Output Low
MOD
MOD
CC
= +2.97V to +3.63V, T
Compensation-Setting
Compensation-Setting
is high.
PARAMETER
Laser Driver with Extinction Ratio Control
BIAS
_______________________________________________________________________________________
and I
A
= -40°C to +85°C. Typical values are at V
MOD
. Input data is AC-coupled. TX_FAULT open, SHUTDOWN open.
SYMBOL
V
V
T
V
TC
REF
K
LO
TH
HI
C
(Note 6)
T
K = I
TC = I
(Note 6)
C
(Note 6)
C
(Note 6)
Figure 5
R
V
V
Sinking 1mA, open collector
Sourcing 100µA
Sinking 100µA
A
HI
LO
155Mbps to 622Mbps SFF/SFP
APC_FILT
APC_FILT
APC_FILT
PULL
= +25 C
= V
= GND
10
MOD
= 45k (typical)
CC
MOD
(V
noise (on VCC
= 0.01µF, I
= 0.01µF, I
= 0.01µF, I
/ I
/ T (Note 6)
BIAS
CONDITIONS
) / ∆V
MD
MD
MD
CC
= +3.3V, I
/ I
/ I
/ I
OUT
BIAS
BIAS
BIAS
). V
= 1/70
= 1/80
= 1/80
OUT
BIAS
23
- 1 or equivalent pattern.
is the voltage across the 15Ω load when IN+
= 60mA, I
V
CC
1.14
MIN
+10
2.0
0
0
MOD
- 0.4
= 60mA, T
TYP
3.3
1.3
-70
100
A
MAX
1.39
-140
+60
600
= +25°C, unless
1.5
1.0
0.8
0.4
0.4
480
15
15
5
ppm/ C
mA/mA
UNITS
mA/ C
µA
µs
µs
µs
%
V
V
V
V
V
V
C
3