MAX3905 MAXIM [Maxim Integrated Products], MAX3905 Datasheet - Page 6

• Manufacturer Part Number: MAX3905
• Description: 150Mbps Automotive VCSEL Driver
• Manufacturer: MAXIM [Maxim Integrated Products]

150Mbps Automotive VCSEL Driver
6
1, 20, 26
4, 5, 6
10, 15
PAD
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11
12
13
14
16
17
18
19
21
22
23
24
25
2
3
7
8
9
TEMPSENS
IN_TTL
NAME
MOD2
MOD1
SQEN
LOW1
LOW2
DT01
DT02
DIFF
N.C.
OUT
OUT
V
3DB
TC1
TC2
TC3
V
IN+
IN-
CC
EE
Circuit Ground
Differential-Input Data Enable. Leave open to enable the TTL data input, or connect to ground to enable
the differential data input.
Single-Ended Data Input, TTL. Compatible with SP1 automotive network interface. This input is active
when DIFF is left open.
No Connection
Positive Differential-Data Input, PECL- or LVDS-Compatible. This high-impedance input is internally
biased to approximately 1.4V and requires an external termination resistor and an AC-coupling
capacitor. It is active when DIFF is connected to ground.
Junction Temperature Sensor. Analog output corresponding to the junction temperature of the die.
Leave open for normal use.
Negative Differential-Data Input, PECL- or LVDS-Compatible. This high-impedance input is internally
biased to approximately 1.4V and requires an external termination resistor and an AC-coupling
capacitor. It is active when DIFF is connected to ground.
Power Supply
Driver T
leave open.
Driver T
leave open.
M od ul ati on- C ur r ent P r og r am m i ng Inp ut. S ets the m od ul ati on- cur r ent am p l i tud e. C onnect to V
M od ul ati on- C ur r ent P r og r am m i ng Inp ut. S ets the m od ul ati on- cur r ent am p l i tud e. C onnect to V
Complementary Data Output. Connect to V
Data Output. Connect to VCSEL cathode.
Squelch Enable Input. Leave open to enable squelch or connect to ground to disable squelch.
P ow er - Red ucti on Inp ut. C om p ati b l e w i th TTL. W hen l ow , 3D B acti vates a test m od e, w hi ch r ed uces outp ut
p ow er b y 50%. W hen 3D B i s hi g h, the m od ul ati on outp ut i s nor m al . S ee the D etai l ed D escr i p ti on secti on.
Low-Current Temperature-Coefficient Programming Input. Sets the temperature coefficient of the bias
current. Connect to GND or leave open. Do not connect to V
Low-Current Temperature-Coefficient Programming Input. Sets the temperature coefficient of the bias
current. Connect to GND or leave open. Do not connect to V
Low-Current Temperature-Coefficient Programming Input. Sets the temperature coefficient of the bias
current. Connect to GND or leave open. Do not connect to V
Low-Current Programming Input. Sets the VCSEL-low (bias) current at the temperature set by the
DT0 pins. Connect to GND or leave open. Do not connect to V
Low-Current Programming Input. Sets the VCSEL-low (bias) current at the temperature set by the
DT0 pins. Connect to GND or leave open. Do not connect to V
0
0
Programming Input. Sets the center temperature of lowest bias current. Connect to V
Programming Input. Sets the center temperature of lowest bias current. Connect to V
CC
or VCSEL anode.
FUNCTION
CC
CC
CC
CC
CC
.
.
.
.
.
Pad Description
C C
C C
or l eave op en.
or l eave op en.
CC
CC
or
or