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X9523 Datasheet, PDF (24/30 Pages) Intersil Corporation – Laser Diode Control for Fiber Optic Modules
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X9523
VTRIPX (X = 1,2,3) PROGRAMMING PARAMETERS (See Figure 28)
Parameter
Description
tVPS
tVPH
tTSU
tTHD
tVPO
VTRIPx Program Enable Voltage Setup time
VTRIPx Program Enable Voltage Hold time
VTRIPx Setup time
VTRIPx Hold (stable) time
VTRIPx Program Enable Voltage Off time
(Between successive adjustments)
twc
VTRIPx Write Cycle time
VP
Programming Voltage
Vta
VTRIPx Program Voltage accuracy
(Programmed at 25oC.)
Vtv
VTRIP Program variation after programming (-40 - 85oC).
(Programmed at 25oC.)
Notes: The above parameters are not 100% tested.
Min
10
10
10
10
1
10
-100
Typ Max
5
10
15
+100
Units
µs
µs
µs
µs
ms
ms
V
mV
-25
+10 +25
mV
V1RO, V2RO, V3RO OUTPUT TIMING. (See Figure 25, Figure 26, Figure 27)
Symbol
tPURST(5)
tMRD (26)(2)(5)
tMRDPW(5)
tRPDx(5)
tFx(5)
tRx(5)
VRVALID(5)
Description
Power-on Reset delay time
MR to V1RO propagation delay
MR pulse width
V Vcc, V2, V3 to V1RO, V2RO,
V3RO propagation
delay (respectively)
V1/Vcc, V2, V3 Fall Time
V1/Vcc, V2, V3 Rise Time
V1/Vcc for V1RO, V2RO, V3RO
Valid (3).
Condition
POR1 = 0, POR0 = 0
POR1 = 0, POR0 = 1
POR1 = 1, POR0 = 0
POR1 = 1, POR0 = 1
See (1)(2)(4)
Min.
25
50
100
150
500
20
20
1
Typ.
50
100
200
300
Max.
75
150
300
450
5
Units
ms
ms
ms
ms
µs
ns
20
µs
mV/µs
mV/µs
V
Notes: 1. See Figure 26 for timing diagram.
Notes: 2. See Figure 20 for equivalent load.
Notes: 3. This parameter describes the lowest possible V1/Vcc level for which the outputs V1RO, V2RO, and V3RO will be correct with respect to
their inputs (V1/Vcc, V2, V3).
Notes: 4. From MR rising edge crossing VIH, to V1RO rising edge crossing VOH.
Notes: 5. The above parameters are not 100% tested.
24
FN8209.0
March 10, 2005
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