ADM3202/ADM3222/ADM1385
Typical Performance Characteristics
6
T
OUT
(HIGH)
4
4
2
2
0
0
–2
–2
–4
–4
T
OUT
(LOW)
–6
–8
V– (V)
8
6
V+ (V)
–6
0
1000
2000
3000
LOAD CAPACITANCE – pF
4000
5000
0
10
20
CURRENT – mA
30
40
Figure 1. Transmitter Output Voltage High/Low vs. Load
Capacitance @ 230 kbps
Figure 4. Charge Pump V+, V– vs. Current
12
250
10
200
V– IMPEDANCE
8
150
6
100
4
50
V+ IMPEDANCE
2
0
3
3.5
4.0
4.5
V
CC
– V
5.0
5.5
0
3.0
3.5
4.0
V
CC
– V
4.5
5.0
5.5
Figure 2. Transmitter Output Voltage High vs. V
CC
Figure 5. Charge Pump Impedance vs. V
CC
8
6
4
2
0
–2
–4
–6
–8
T1
OUT
(LOW) – V
T1
OUT
(HIGH) – V
25
I
DD
(mA) @ 250kbps
20
15
I
DD
(mA) @ 160kbps
10
I
DD
(mA) @ 80kbps
5
0
2
4
6
CURRENT – mA
8
10
0
0
1000
2000
3000
4000
LOAD CAPACITANCE – pF
5000
Figure 3. Transmitter Output Voltage Low/High vs. Load
Current
Figure 6. Power Supply Current vs. Load Capacitance
REV. A
–5–
AD [ ANALOG DEVICES ]
