ISL58781 Datasheet, PDF (8/15 Pages) Intersil Corporation – Laser Diode Driver with Serial Control and Write Current DAC

ISL58781
HFM (High Frequency Modulator) Standard conditions unless otherwise noted. (Continued)
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP
SS_-WIDTH-RANGE
Spread Spectrum Spreading Width
Adjustment Range
R_FREQ = 4.7kReg 1-18 = 10h,
0.1 0.525
Reg 0-16 = 26h; Reg X-00 bit 6 = 0
SS_Shift
Shift of Center Frequency when SS is R_FREQ = 4.7kReg 1-18-00h to
0.7
Enabled vs when it’s Disabled
30h, Reg 0-16 = 26h; Reg X-00 bit
6=0
SS_Mod
Spread Spectrum Modulation
Frequency
REG 1-18h Bit 7 = 0; Reg X-00 bit 30
53
6=0
SS_Mod
Spread Spectrum Modulation
Frequency
REG 1-18h Bit 7 = 1; Reg X-00 bit 15
34
6=0
MAX
1.1
80
55
UNIT
%
%
kHz
kHz
Serial Interface AC Performance Standard conditions unless otherwise noted.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX UNIT
F_SER
t_EH
t_EL
t_ERSR
t_CDS
t_CDH
t_SREF
t_CC
Duty
SCLK Operating Range
Static logic not limited at low frequency
50 MHz
SEN “H” Time
@ 50MHz
320
ns
SEN “L” Time
@ 50MHz
160
ns
SEN Rising Edge to the First SCLK Rising Edge @ 50MHz
10
ns
SDIO Set Up Time
@ 50MHz
10
ns
SDIO Hold Time
@ 50MHz
10
ns
Last SCLK Rising Edge to SEN Falling Edge
@ 50MHz
10
ns
SCLK Cycle Time1
@ 50MHz
20
ns
SCLK “H” Duty Cycle
@ 50MHz
40 50 60 %
t_CDD
t_EDH
SDIO Output Delay
SDIO Output Hold Time
@ 50MHz
@ 50MHz
4
ns
2
ns
LVDS Specifications
Standard conditions unless otherwise noted.
PARAMETER
DESCRIPTION
CONDITIONS
V_IN-HIGH
V_IN-LOW
C_IN
R_IN
V_MIN
Maximum Single Line Voltage
Minimum Single Line Voltage
Input Capacitance
Input Resistance
Minimum Differential Voltage
Signal tested with ±240mV differential input
MIN TYP MAX UNIT
2.4
V
0
V
2
pF
85 100 115 
240
mV_PK
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8
FN6909.3
December 3, 2015