ISL58831 Datasheet, PDF (6/12 Pages) Intersil Corporation – Dual Laser Driver with APC Amplifier and Spread Spectrum Oscillator

ISL58831
Laser Amplifier V_DD = 5V, T_A = +25°C, ENABLE = HI unless otherwise specified. (Continued)
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX UNIT
I_OUTR2
I_OUT2
I_OUT3
I_OUT4
IOSR
Output Current
Output Current
Output Current
Output Current
Best Fit Current Offset
V_DD = 4.5V, V_OUT = 2.1V, output is sourcing,
120
channel R2 - I_OUT2 (Note 5), IINR2 = 2mA
V_DD = 4.5V, V_OUT = 3.4V, output is sourcing,
235
channel 2 - I_OUT1 (Note 5), IIN2 = 2mA
V_DD = 4.5V, V_OUT = 3.4V, output is sourcing,
170
channel 3 - I_OUT1 (Note 5), IIN3 = 2mA
V_DD = 4.5V, V_OUT = 3.4V, output is sourcing,
100
channel 4 - I_OUT1 (Note 5), IIN4 = 2mA
Channel R (Note 5)
-6
mA
mA
mA
mA
+6
mA
IOS2, 3, 4 Best Fit Current Offset
Channels 2, 3, 4 (Note 5)
-6
+6
mA
ILIN
Output Current Linearity
Any channel (Note 5)
-3
+4
%
IDAC
Input Current Range
Input is sinking
0
2
mA
R_INR
R_{IN2, 3, 4}
VTH
I_INR Input Impedance
I_{IN2, 3, 4} Input Impedance
WEN2/3/4 Threshold for Write Pulses
R_IN is to GND
R_IN is to GND
Temperature stabilized
562 750 937
Ω
375 500 625
Ω
1.68
V
I_OFF1
Output Off Current 1
ENABLE = LO
0.5
mA
I_OFF2
Output Off Current 2
WEN = HI, total for all channels
1.5
mA
I_OFF3
Output Off Current 3
WEN = LO, I_IN = 0µA, total for all channels
5
mA
VC1
I_OUT Supply Sensitivity
I_OUT = 40mA, V_DD = 5V ±10%, read only
-3
3
%/V
VC2
I_OUT Supply Sensitivity
I_OUT = 80mA, 40mA read + 40mA write
-3
3
%/V
IN_OUT
I_OUT Current Output Noise
I_OUT = 40mA, OSCEN = LO
3.5
nA/Hz
TC1
I_OUT Temperature Sensitivity
I_OUT = 40mA, read only
+100
ppm/°C
TC2
I_OUT Temperature Sensitivity
I_OUT = 80mA, 40mA read + 40mA write
-100
ppm/°C
NOTE:
5. The amplifier linearity is calculated using a best fit method at three operating points. The output currents chosen are 20mA, 40mA, and 60mA. The
transfer function for I_OUT is defined as follows: I_OUT = (I_IN * GAIN) +I_OS.
Laser Current Amplifier Outputs AC Performance V_DD = 5V, I_OUT = 40mA DC with 40mA pulse, T_A = +25°C unless
otherwise specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX UNIT
tr2
Write Rise Time
tf2
Write Fall Time
OS
Output Current Overshoot
I_OUT = 40mA (read) + 40mA (10%-90%)
I_OUT = 40mA (read) + 40mA (10%-90%)
Measured on 6.8Ω resistor load
0.8
2.0
ns
0.8
2.0
ns
5
%
t_ON
I_OUT ON Propagation Delay
Input timing to I_OUT at 50% of final value
(Note 6)
2.0
ns
t_OFF
I_OUT OFF Propagation Delay
Input timing to I_OUT at 50% of final value
(Note 6)
2.0
ns
T_DIS
Disable Time
Input timing to I_OUT at 50% of final value
(Note 6)
20
ns
T_EN
Enable Time
Input timing to I_OUT at 50% of final value
(Note 6)
150
ns
BW
Amplifier Bandwidth
I_OUT = 50mA, all channels, -3dB value
8
F_OSC
Oscillator Frequency
R_FREQ = 5600Ω
290 328
TC_OSC
Oscillator Temperature Coefficient
R_FREQ = 4500Ω
200
NOTE:
6. Input timing is defined as WENx or ENABLE input pulse crosses 1.68V. Input pulse is standard 3.3V CMOS-level TTL input.
MHz
360 MHz
ppm/°C
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6
FN7440.1
January 28, 2016