MAX3795ETG Maxim Integrated Products, MAX3795ETG Datasheet - Page 4

• Manufacturer Part Number: MAX3795ETG
• Description: Laser Driver 1Gbps to 4.25Gbps Mu ltirate VCSEL Driver
• Manufacturer: Maxim Integrated Products
• Type: Transmitterr

Specifications of MAX3795ETG

• Operating Supply Voltage: 3.3 V
• Package / Case: TQFN-24 EP
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT

1Gbps to 4.25Gbps Multirate VCSEL Driver
with Diagnostic Monitors
ELECTRICAL CHARACTERISTICS (continued)
(V
+25°C, unless otherwise noted.)
4
Note 1: Supply current measurements exclude I
Note 2: AC characteristics guaranteed by design and characterization.
Note 3: Measured by applying a pattern that contains 20µs of K28.5, followed by 5µs of zeros, then 20µs of K28.5, followed by 5µs
Note 4: Variation of bias monitor gain for any single part over the range of V
Note 5: Deterministic jitter measured at 4.25Gbps with a K28.5 pattern (00111110101100000101).
SAFETY FEATURES (see the Typical Operating Characteristics)
High-Current Fault Threshold
V
Power-Monitor Fault Threshold
TX Disable Time
TX Disable Negate Time
Fault Reset Time
Power-On Time
Fault Assert Time
Fault Delay Time
TX_DISABLE Reset
Deterministic Jitter
Random Jitter
CC
BIAS
_______________________________________________________________________________________
= +2.97V to +3.63V, T
Fault Threshold
of ones. Data rate is equal to 2.5Gbps, with inputs filtered using 1.8GHz Bessel filters.
PARAMETER
A
=
-40°C to +85°C. Typical values are at V
SYMBOL
t_
t_
t_
V
V
t_
t_
t_
V
FLTDLY
t_
FAULT
RESET
BMTH
PMTH
INIT
INIT
DJ
RJ
BTH
OFF
ON
1
2
BIAS
V
V
V
Time from rising edge of TX_DISABLE to
I
(Note 2)
Time from rising edge of TX_DISABLE to
I
(Note 2)
Time to set V
after rising edge of TX_DISABLE (Note 2)
Time after power-on to transmitter-on with
TX_DISABLE low (Note 2)
Time from fault occurrence to V
high; C
(Note 2)
Time from fault to I
I
continuously occurring fault (Note 2)
Time TX_DISABLE must be held high to
reset FAULT (Note 2)
5m A ≤ I
4.25G b p s, K28.5 ( N otes 2, 5) +100°C
APC closed loop
APC open loop (Note 2)
BIAS
BIAS
MOD
BIASMON
BIAS
PWRMON
from the total current.
= I
and I
= I
referenced to V
FAULT
M OD
BIAS_OFF
MOD_OFF
> V
MOD
> V
FAULT
≤ 15m A,
< 20pF, R
BMTH
PMTH
CONDITIONS
at 99% of steady state
; measured with a
and I
BIAS
= low after power-on or
causes a fault
causes a fault
CC
CC
MOD
= I
FAULT
= +3.3V, TC1 and TC2 are shorted, PEAKSET open, T
BIAS_OFF
CC
= I
, temperature, 3mA < I
- 40°C to + 85° C
= 4.7kΩ
MOD_OFF
FAULT
and
=
-0.250
MIN
0.7
0.7
BIAS
< 15mA.
12.7
TYP
-0.2
8.4
0.5
0.5
0.8
0.8
1.8
1.4
55
60
60
1
-0.150
MAX
15.6
500
200
200
0.9
0.9
0.9
50
5
5
1
UNITS
ps
ps
ms
ms
µs
µs
µs
µs
µs
RMS
V
V
V
P-P
A
=