DS1875 查看數據表（PDF） - Maxim Integrated
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DS1875 Datasheet PDF : 92 Pages
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PON Triplexer and SFP Controller
Typical Operating Characteristics (continued)
(VCC = +2.85V to +3.9V, TA = +25°C, unless otherwise noted.)
CALCULATED AND DESIRED % CHANGE
IN VMOD vs. MOD RANGING
100
90
80
DESIRED
VALUE
70
60
CALCULATED
VALUE
50
40
30
20
10
0
000 001 002 003 004 005 006 007
MOD RANGING VALUE (DEC)
DESIRED AND CALCULATED CHANGE
IN VBMD vs. COMP RANGING
100
90
80
DESIRED
VALUE
70
60
CALCULATED
VALUE
50
40
30
20
10
0
000 001 010 011 100 101 110 111
COMP RANGING (DEC)
MON1 TO MON8 INL
1.0
USING FACTORY-PROGRAMMED
0.8 FULL-SCALE VALUE OF 2.5V
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
0.5 1.0 1.5 2.0 2.5
MON1 TO MON8 INPUT VOLTAGE (V)
MON1 TO MON8 DNL
1.0
USING FACTORY-PROGRAMMED
0.8 FULL-SCALE VALUE OF 2.5V
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
0.5 1.0 1.5 2.0 2.5
MON1 TO MON8 INPUT VOLTAGE (V)
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
VBMD INL vs. APC INDEX
50 100 150 200 250
APC INDEX (DEC)
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
VMOD INL vs. MOD INDEX
50 100 150 200 250
MOD INDEX (DEC)
FB VOLTAGE vs. TEMPERATURE
PWM DAC = FFh
1.260
1.255
1.250
1.245
1.240
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
77.0
76.8
76.6
76.4
76.2
76.0
75.8
75.6
75.4
75.2
75.0
2.85
VOUT vs. VCC
VIN = 3.3V
3.35
VCC (V)
DUTY-CYCLE LIMIT vs. TEMPERATURE
91.00
90.75
90.50
90.25
90.00
89.75
89.50
89.25
SW FREQUENCY
525kHz
262.5kHz
131.25kHZ
1050kHz
89.00
3.85
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
______________________________________________________________________________________ 11
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