M02061_17 Datasheet, PDF (33/45 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
Figure 3-6. Modulator Output
0.75 nH ^* _OUT-
0.4pF
0.75 nH ^*
OUT+
For V_CC =5V, OUT+ and OUT-
should not be driven below 1.15V
For V_CC = 3.3V, OUT+ and OUT-
should not be driven below 1.6V.
GND_A
(optional
external
inductance)
* Denotes bond
wire internal to
MLF package
3.3.7
Fail Output
The M02061 has a FAIL alarm output which is compatible with the TX_FAULT signalling requirements of common
pluggable module standards.
The ESD protection on this pin provides a true open collector output that can withstand significant variation in V_CC
when signalling between circuit boards. Also, if the M02061 loses power the pull-up will signal a fail condition. In a
simple static protection scheme used by other ICs the protection diodes would clamp the FAIL signal to ground
when the chip loses power.
3.3.8
TX Disable and Disable Delay Control
The DIS pin is used to disable the transmit signal (both the modulation and bias current are disabled when DIS =
high).
The DIS input is compatible with TTL levels regardless of whether VCC = 5V or VCC = 3.3V. The external 4.7kΩ
and 10kΩ pull-up resistor required by most interface standards is not needed because this pin has an internal 7kΩ
resistor to V_CC.
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