Datasheet

ADN2871
Rev. A | Page 7 of 20
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
05228-005
GND
19
24
18
1
12
7
13
6
FAIL IBMON ERRE
F
IMMO
N
ERSET V
CC
CCBIAS
PAVSET
V
CC
PAVREF
RPAV
GND
V
CC
IMODP
IMODN
GND
IBIAS
ALS
DATAN
DATAP
GND
ADN2871
PAVCAP
NC
NC = NO CONNECT
Figure 6. Pin Configuration—Top View
Note: The LFCSP has an exposed paddle that must be connected to ground.
Table 4. Pin Function Descriptions
Pin No. Mnemonic Description
1 CCBIAS In ac-coupled mode, CCBIAS can connect to either IBIAS or V
CC
. In dc-coupled mode, CCBIAS can connect to V
CC
.
2 PAVSET Average Optical Power Set Pin.
3 GND Supply Ground.
4 V
CC
Supply Voltage.
5 PAVREF Reference Voltage Input for Average Optical Power Control.
6 RPAV Average Power Resistor when Using PAVREF.
7 NC No Connect.
8 PAVCAP Average Power Loop Capacitor.
9 GND Supply Ground.
10 DATAP Data, Positive Differential Input.
11 DATAN Data, Negative Differential Input.
12 ALS Automatic Laser Shutdown.
13 ERSET Extinction Ratio Set Pin.
14 IMMON Modulation Current Monitor Current Source.
15 ERREF Reference Voltage Input for Extinction Ratio Control.
16 V
CC
Supply Voltage.
17 IBMON Bias Current Monitor Current Source.
18 FAIL Fail Alarm Output.
19 GND Supply Ground.
20 V
CC
Supply Voltage.
21 IMODP Modulation Current Positive Output (Current Sink), Connect to Laser Diode.
22 IMODN Modulation Current Negative Output (Current Sink).
23 GND Supply Ground.
24 IBIAS Laser Diode Bias (Current Sink to Ground).