Half Duplex GMSK Modem

FX579

© 1996 Consumer Microcircuits Limited

20

D/579/4

1.7

Performance Specification

1.7.1

Electrical Performance

Absolute Maximum Ratings

Exceeding these maximum ratings can result in damage to the device.

Min.

Max.

Units

-0.3

7.0

V

-0.3

V

-30

+30

mA

Current into or out of any other pin

-20

+20

mA

Storage Temperature

-55

+125

°C

Operating Temperature

-40

+85

°C

D4 Package (Plastic)

Total allowable power dissipation at Tamb=25°C

800

mW

...... Derating

13

mW/°C

Operating Limits

Correct operation of the device outside these limits is not implied.

Condition

Min.

Max.

Units

Operating Temperature

-40

+85

°C

3.0

5.5

V

Xtal/Clock Frequency

1.0

5.0

MHz

Xtal/Clock Frequency

1.0

6.5

MHz

Data Rate

4000

20 000

bits/sec

Data Rate

4000

40 000

bits/sec

Operating Characteristics

All device characteristics are measured under the following conditions unless otherwise specified:

Data rate = 8000 bits/sec, Noise bandwidth = bit rate

Characteristic

Note

Min.

Typ.

Max.

Units

Static Values

Supply Current

1

-

-

2

mA

1

-

-

4

mA

Logic "1" input level

3.5

-

-

V

Logic "0" input level

-

-

1.5

V

Logic input current

2

-5.0

-

5.0

µA

4.6

-

-

V

-

-

0.4

V