1.0625Gbps to 11.3Gbps, SFP+ Laser Driver
with Laser Impedance Mismatch Tolerance
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +2.85V to +3.63V, TA = -40°C to +85°C, and Figure 1. Guaranteed by design and characterization from TA = -40°C to +95°C.
Typical values are at VCC = +3.3V, IBIAS = 60mA, IMOD = 40mA, 25I differential output load, and TA = +25°C, unless otherwise
noted.) (Note 1)
DISABLE Input Resistance
RPULL Internal pullup resistor
3-WIRE DIGITAL I/O SPECIFICATIONS (SDA, SCL, CSEL)
Input High Voltage
Input Low Voltage
Input Leakage Current
VIN = 0V or VCC, internal pullup or pull-
down is 75kI typical
Output High Voltage
VOH External pullup is (4.7kI to 10kI) to VCC
Output Low Voltage
VOL External pullup is (4.7kI to 10kI) to VCC
3-WIRE DIGITAL INTERFACE TIMING CHARACTERISTICS (Figure 5)
SCL Clock Frequency
SCL Pulse-Width High
SCL Pulse-Width Low
SDA Setup Time
SDA Hold Time
SCL Rise to SDA Propagation
CSEL Pulse-Width Low
CSEL Leading Time Before the
First SCL Edge
CSEL Trailing Time After the Last
SDA, SCL Load
Total bus capacitance on one line with
4.7kI pullup to VCC
VCC - 0.5
Note 1: Guaranteed by design and characterization (TA = -40NC to +95NC).
Note 2: BIAS is connected to 2.0V. TOUT+/TOUT- are connected through pullup inductors to a separate supply that is equal to VCCT.
ICC = 4.92 + 0.0383 x IBIAS + 0.3692 x IMOD
Note 3: Stability is defined as [(I_measured) - (I_reference)]/(I_reference) over the listed current range, temperature, and VCC =
VCCREF Q5%. VCCREF = 3.0V to 3.45V. Reference current measured at VCCREF, TA = +25NC.
Note 4: Measured with K28.5 data pattern at 10.7Gbps and with a (27 - 1 PRBS + 72 zeros + 27 - 1 PRBS (inverted) + 72 ones)
pattern at 11.3Gbps.