M02061_17 Datasheet, PDF (9/45 Pages) M/A-COM Technology Solutions, Inc. – 3.3 or 5 Volt Laser Driver

M02061-12/-21
3.3 or 5 Volt Laser Driver
Rev V6
Table 1-5. Safety Logic Timing (2 of 2)
Symbol
Parameter
Conditions
Minimum Typical Maximum
t_fault Laser fault time - from fault condition to From occurrence of fault condition or when
assertion of FAIL
Supply_OK is beyond specified range
t_reset DIS time to start reset
DIS pulse width required to initialize safety circuitry
or reset a latched fault
t_{VCC_OK} Supply_OK delay time
Delay between Supply_OK condition and when 10
outputs are enabled
t_on_BM DIS negate (turn-on) time during burst- I_MOD > 20mA; outputs DC coupled (5V
mode operation
operation)⁽⁴⁾
t_off_BM DIS assert (turn-off) time during burst- I_MOD > 20mA; outputs DC coupled (5V operation)
mode operation
NOTES:
1. With CAPC < 2.2nF
2. User-adjustable. Specifications reflect timing with no external RESET capacitor.
3. With < 1nF capacitor from RESET pin to ground.
4. Imod >12mA
100
10⁽³⁾
20
300
500
200
500
Units
μs
μs
μs
ns
ns
Figure 1-1. Relationship between Data Inputs and Modulation Outputs
D_IN+
D _IN-
100 mV -
1200 mV
V_IN(DIFF)
200 mV -
2400 mV
V_OUT-
V_OUT+
GND
> 1.60V when V_{CC5_OR} high
> 1.15V when V_{CC5_OR} low
9
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