4
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com SP3220E_EB_EU_102_102016
Unless otherwise noted, the following performance characteristics apply for V
CC
= +3.3V, 250kbps data rate, all
drivers loaded with 3kΩ, 0.1µF charge pump capacitors, and T
AMB
= +25°C.
Figure 2. Transmitter Output Voltage vs Load
Capacitance for the SP3220EB.
Figure 1. Icc vs Load Capacitance for the
SP3220EB.
30
25
20
15
10
5
0
Icc (mA)
Load Capacitance (pF)
0 1000 2000 3000 4000 5000
125Kbps
20Kbps
60Kbps
T1 at Full Data Rate
T2 at 1/16 Full Data Rate
T1+T2 Loaded with 3k/CLoad
Figure 3. Transmitter Output Voltage vs Supply
Voltage for the SP3220EB.
TYPICAL PERFORMANCE CHARACTERISTICS
6
4
2
0
-2
-4
-6
0 1000 2000 3000 4000 5000
TxOUT +
TxOUT -
Transmitter Output
Voltage (V)
Load Capacitance (pF)
T1 at 250Kbps
2.7 3 3.5 4 4.5 5
Supply V oltage (V)
Transmitter Output
Voltage (V)
6
4
2
0
-2
-4
-6
TxOUT +
TxOUT -
Figure 4. Supply Current vs Supply Voltage for the
SP3220EB.
12
10
8
6
4
2
0
2.7 3 3.5 4 4.5 5
Supply Current (mA)
Supply Voltage (V)
T1 Loaded with 3K // 1000pf @ 250Kbps
Figure 5. Slew Rate vs Load Capacitance for the
SP3220EB.
Figure 6. Supply Current vs Supply Voltage for the
SP3220EU.
25
20
15
10
5
0
0 500 1000 2000 3000 4000 5000
Slew rate (V/s)
Load Capacitance (pF)
- Slew
+ Slew
40
30
20
10
0
0 250 500 1000 2000 3000 4000
Icc (mA)
Load Capacitance (pF)
500Kbps
1Mbps
2Mbps
