© 2014 Exar Corporation

XR32220

7 / 13

exar.com/XR32220

Rev 1A

Typical Performance Characteristics

Figure 1: Transmitter Skew vs Load Capacitance

Figure 2: Transmitter Output Voltage vs Supply Voltage

Figure 3: Transmitter Output Voltage vs Load Capacitance

Figure 4: Supply Current vs Load Capacitance

Figure 5: Supply Current vs Supply Voltage

Figure 6: Transmitter Output Voltage vs Load Capacitance

0

50

100

150

200

0

500

1000

1500

2000

Load Capacitance (pF)

T1 at 1Mbps

T2 at 31.2Kbps

All TX loaded with 3K

// C

Load

0

50

100

150

200

0

500

1000

1500

2000

Load Capacitance (pF)

T1 at 1Mbps

T2 at 31.2Kbps

All TX loaded with 3K

// C

Load

-6

-4

-2

0

2

4

6

0

500

1000

1500

2000

Load Capacitance (pF)

XR32220EH, Supply = 3.3V,

T1 at Full Data Rate (1Mbps)

T2 Driver at 1/16th data rate

All Drivers loads 3K

// C

Load

0

10

20

30

40

50

60

70

0

1000

2000

3000

4000

5000

Load Capacitance (pF)

1Mbps

250Kbps

120Kbps

20Kbps

T1 Driver at full Data Rate

T2 Driver at 15.5Kbps

all Drivers loaded with 3K

// C

Load

0

5

10

15

20

25

30

35

40

45

50

2.5

3

3.5

4

4.5

5

Supply Voltage (V)

1Mbps

500Kbps

250Kbps

T1 at Full Data Rate

T2 at 15.5Kbps

All drivers loaded with 3K

// 1000pF

-6

-4

-2

0

2

4

6

0

1000

2000

3000

4000

5000

Load Capacitance (pF)

TxOUT+

TxOUT-

XR32220EB, Supply = 3.3V,

T1 Driver at 250Kbps

T2 Driver at 15.5Kbps

All Drivers loads 3K

// C

Load