ADN2847ACP-48 Просмотр технического описания (PDF) - Analog Devices
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ADN2847ACP-48 Datasheet PDF : 12 Pages
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48-Lead LFCSP
PIN CONFIGURATION
ADN2847
32-Lead LFCSP
TP1 1
LBWSET 2
ASET 3
ERSET 4
PSET 5
TP2 6
IMPD 7
IMPDMON 8
IMPDMON2 9
IMPD2 10
GND4 11
VCC4 12
PIN 1
INDICATOR
ADN2847
TOP VIEW
36 GND2
35 IDTONE
34 GND2
33 IBMON
32 IMMON
31 GND3
30 VCC3
29 ALS
28 FAIL
27 DEGRADE
26 CLKSEL
25 TP6
LBWSET 1
ASET 2
ERSET 3
PSET 4
IMPD 5
IMPDMON 6
GND4 7
VCC4 8
PIN 1
INDICATOR
ADN2847
TOP VIEW
24 IBMON
23 IMMON
22 GND3
21 VCC3
20 ALS
19 FAIL
18 DEGRADE
17 CLKSEL
Pin Number
48-Lead 32-Lead
1
2
1
3
2
4
3
5
4
6
7
5
8
6
9
10
11
7
12
8
13
9
14
10
15
16
11
17
18
12
19
13
20
14
21
15
22
16
23
24
25
26
17
27
18
28
19
29
20
30
21
31
22
32
23
33
24
REV. 0
PIN FUNCTION DESCRIPTIONS
Mnemonic
TP1
LBWSET
ASET
ERSET
PSET
TP2
IMPD
IMPDMON
IMPDMON2
IMPD2
GND4
VCC4
ERCAP
PAVCAP
TP3
VCC1
GND1
DATAN
DATAP
GND1
CLKP
CLKN
TP4
TP5
TP6
CLKSEL
DEGRADE
FAIL
ALS
VCC3
GND3
IMMON
IBMON
Function
Test Pin. In normal operation, TP1 = GND.
Select Low Loop Bandwidth
Alarm Current Threshold Setting Pin
Extinction Ratio Set Pin
Average Optical Power Set Pin
Test Pin. In normal operation, TP2 = GND.
Monitor Photodiode Input
Mirrored Current from Monitor Photodiode
Mirrored Current from Monitor Photodiode2 (for Use with Two MPDs)
Monitor Photodiode Input 2 (for Use with Two MPDs)
Supply Ground
Supply Voltage
Extinction Ratio Loop Capacitor
Average Power Loop Capacitor
Test Pin. In normal operation, TP3 = GND.
Supply Voltage
Supply Ground
Data, Negative Differential Terminal
Data, Positive Differential Terminal
Supply Ground
Data Clock Positive Differential Terminal, Used if CLKSEL = VCC
Data Clock Negative Differential Terminal, Used if CLKSEL = VCC
Test Pin. In normal operation, TP4 = GND.
Test Pin. In normal operation, TP5 = GND.
Test Pin. In normal operation, TP6 = GND.
Clock Select (Active = VCC), Used if Data Is Clocked into Chip
DEGRADE Alarm Output
FAIL Alarm Output
Automatic Laser Shutdown
Supply Voltage
Supply Ground
Modulation Current Mirror Output
Bias Current Mirror Output
–5–
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