MAX3948 Просмотр технического описания (PDF) - Maxim Integrated
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MAX3948 Datasheet PDF : 37 Pages
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MAX3948
11.3Gbps, Low-Power, DC-Coupled Laser Driver
ABSOLUTE MAXIMUM RATINGS
VCC, VCCT.............................................................-0.3V to +4.0V
|VCC - VCCT|...................................................................... < 0.5V
Voltage Range at TIN+, TIN-, DISABLE,
SDA, SCL, CSEL, VSEL, FAULT, and BMON......-0.3V to VCC
Voltage Range at VOUT and TOUTC........ 0.4V to (VCCT - 0.4V)
Voltage Range at TOUTA...........(VCCT - 1.3V) to (VCCT + 1.3V)
Current Range into TIN+ and TIN-.................. -20mA to +20mA
Current Range into VOUT.................................. -2mA to +90mA
Current into TOUTC and TOUTA................................... +150mA
Continuous Power Dissipation (TA = +70NC)
TQFN (derate 20.8mW/NC above +70NC)...............1666.7mW
Storage Temperature Range ........................... -55NC to +150NC
Die Attach Temperature .................................................+400NC
Lead Temperature (soldering, 10s).................................+300NC
Soldering Temperature (reflow).......................................+260NC
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion 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.
PACKAGE THERMAL CHARACTERISTICS (Note 1)
TQFN
Junction-to-Ambient Thermal Resistance (BJA)...........48NC/W
Junction-to-Case Thermal Resistance (BJC)................10NC/W
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
ELECTRICAL CHARACTERISTICS
(VCC = VCCT = 2.95V to 3.63V, TA = -40NC to +95NC; typical values are at VCC = VCCT = 3.3V, TA = +25NC, LDDC = 20mA, LDMOD
= 40mA, and 14I single-ended electrical output load, unless otherwise noted. See Figure 1 for electrical setup.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
POWER SUPPLY
Power-Supply Current
ICC
Excludes output current through the exter-
nal pullup inductors (Note 3)
51
62
mA
Power-Supply Voltage
POWER-ON RESET
VCCT, VCC
2.95
3.63
V
VCC for Enable High
VCC for Enable Low
DATA INPUT SPECIFICATION
2.55 2.75
V
2.3 2.45
V
Input Data Rate
1
10.3 11.3 Gbps
Differential Input Voltage
Launch amplitude into FR4 transmission
line P 12in,
SET_TXEQ[1:0] = 01b,
0.2
SET_TXEQ[1:0] = 11b
VIN
SET_TXEQ[1:0] = 01b,
SET_TXEQ[1:0] = 11b,
0.15
outside of optimized range
0.8
VP-P
1.0
Common-Mode Input Voltage
Differential Input Resistance
VCM
RIN
SET_TXEQ[1:0] = 00b
0.15
1.0
2.15
V
75
100 125
I
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