Manual

MAX3941
10Gbps EAM Driver with Integrated
Bias Network
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Supply Voltage V
EE
..............................................-6.0V to +0.5V
Voltage at MODEN,
RTEN, PLRT, MODSET, BIASSET ...........(V
EE
- 0.5V) to +0.5V
Voltage at DATA+, DATA-, CLK+, and CLK-……-1.65V to +0.5V
Voltage at OUT .............................................……….-4V to +0.5V
Voltage at PWC+, PWC- ...................(V
EE
- 0.5V) to (V
EE
+ 1.7V)
Current Into or Out of OUT.............................……………...80mA
Continuous Power Dissipation (T
A
= +85°C)
24-Lead Thin QFN
(derate 20.8mW/°C above +85°C).............................1354mW
Storage Temperature Range .....................……-55°C to +150°C
Operating Temperature Range ....................……-40°C to +85°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(V
EE
= -5.5V to -4.9V, T
A
= -40°C to +85°C. Typical values are at V
EE
= -5.2V, I
BIAS
= 30mA, I
MOD
= 100mA, and T
A
= +25°C, unless
otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Power-Supply Voltage V
EE
-5.5 -4.9 V
Retime disabled 124 174
Supply Current I
EE
Excluding I
BIAS
and
I
MOD
(Note 1)
Retime enabled 140 201
mA
Power-Supply Noise Rejection PSNR f ≤ 2MHz (Note 2) 15 dB
SIGNAL INPUT (Note 3)
Input Data Rates NRZ 10.7 Gbps
Single-Ended Input Resistance R
IN
Input to GND 42.5 50 58.5 Ω
DC-coupled, Figure 1a -1 0
Single-Ended Input Voltage V
IS
AC-coupled, Figure 1b -0.4 +0.4
V
DC-coupled (Note 4) 0.2 2.0
Differential Input Voltage V
ID
AC-coupled (Note 4) 0.2 1.6
V
P-P
Differential Input Return Loss RL
IN
≤15GHz 15 dB
EAM BIAS
Maximum Bias Current V
BIASSET
= V
EE
+ 2V 50 56 mA
Minimum Bias Current V
BIASSET
= V
EE
0.3 1.2 mA
BIASSET Voltage Range V
BIASSET
V
EE
V
EE
+ 2 V
Equivalent Bias Resistance R
BSEQV
(Note 5) 36.4 Ω
V
BIASSET
= V
EE
+ 0.11V 2.1 4.3
V
BIASSET
= V
EE
+ 0.36V 8.8 11.3
Bias-Current-Setting Accuracy T
A
= +25°C
V
BIASSET
= V
EE
+ 2.0V 52 58.4
mA
V
BIASSET
< V
EE
+ 0.36V -1100 +1100
Bias-Current Temperature
Stability
(Note 6)
V
BIASSET
≥ V
EE
+ 0.36V -480 +480
ppm/°C
BIASSET Input Resistance 20 kΩ
BIASSET Bandwidth
50Ω driver load, V
BIASSET
= V
EE
+ 0.55V,
Figure 2
5MHz
EAM MODULATION
Maximum Modulation Current 112 120 mA
P-P
Minimum Modulation Current V
MODSET
= V
EE
37 40 mA
P-P
MODSET Voltage Range V
MODSET
V
EE
V
EE
+ 1 V
E q ui val ent M od ul ati on Resi stance R
MODEQV
(Note 7) 11.1 Ω