FX489 Datasheet, PDF (11/12 Pages) List of Unclassifed Manufacturers – GMSK Modem

Specification
Absolute Maximum Ratings
Exceeding the maximum rating can result in device damage. Operation of the device outside the operating limits is
not implied.
Supply voltage
-0.3 to 7.0V
Input voltage at any pin (ref V_SS = 0V)
Sink/source current (supply pins)
-0.3 to (V_DD + 0.3V)
+/- 30mA
(other pins)
+/- 20mA
Total device dissipation @ T_AMB 25°C
Derating
800mW Max.
10mW/°C
Operating temperature range: FX489DW/P
-40°C to +85°C
Storage temperature range: FX489DW/P
-40°C to +85°C
Operating Limits
All device characteristics are measured under the following conditions unless otherwise specified:
V_DD = 5.0V, T_AMB = 25°C. Xtal/Clock Frequency = 4.096MHz. Data Rate = 8000 bits/sec.
Noise Bandwidth = Bit Rate
Characteristics
See Note
Min.
Typ.
Max.
Unit
Static Values
Supply Voltage (V )
DD
Supply Current Tx PS Rx PS
1
1
1
0
1
1
0
0
0
Input Logic Levels
Logic “1”
Logic “0”
Logic Input Current
2
Logic “1”Output Level at IOH = -120µA
Logic “0”Output Level at IOL = 120µA
Rx, Tx Data Rate
Transmit Parameters
Tx OUT, Output Impedance
3
Tx OUT, Level
4
Tx Data Delay (BT = 0.3)
5
(BT = 0.5)
5
Tx PS to Output-Stable Time
6
Receive Parameters
Rx Amplifier -
Input Impedance
Output Impedance
7
Voltage Gain
Rx Filter Signal Input Level
8
Rx Time Delay
9
On-Chip Xtal Oscillator
R _IN
R _OUT
Voltage Gain
Xtal/Clock Frequency
“High” Pulse Width
10
“Low” Pulse Width
10
4.5
-
-
-
-
3.5
-
-5.0
4.6
-
4000
-
0.8
-
-
-
1.0
-
-
0.7
-
10.0
5.0
-
1.0
80.0
80.0
5.0
5.5
V
1.0
-
mA
3.0
-
mA
4.0
-
mA
7.0
-
mA
-
-
V
-
1.5
V
-
5.0
µA
-
-
V
-
0.4
V
19200 bits/sec
1.0
-
kΩ
1.0
1.2
V p-p
2.0
2.5
bit-periods
1.5
2.0
bit-periods
4.0
-
bit-periods
-
-
MΩ
10.0
-
kΩ
50.0
-
dB
1.0
1.3
V p-p
-
3.0
bit-periods
-
-
MΩ
-
15.0
kΩ
15.0
-
dB
–
5.0
MHz
-
-
ns
-
-
ns
Notes
1. Not including current drawn from the FX489 pins by external circuitry. See Absolute Maximum Ratings.
2. For V_IN in the range V_SS to V_DD.
3 For a load of 10kΩ or greater. Tx PS input at logic “0”; Tx Enable = “1”.
4. Data pattern of “1111000011110000 ..”
5. Measured between the rising edge of ‘Tx Clock’ and the centre of the corresponding bit at ‘Tx Out.’
6. Time between the falling edge of ‘Tx PS’ and the ‘Tx Out’ voltage stabilising to normal output levels.
7. For a load of 10kΩ or greater. Rx PS input at logic “0”.
8. For optimum performance, measured at the ‘Rx Feedback’ pin for a “1111000011110000 ...” pattern.
9. Measured between the centre of bit at ‘Rx Signal In’ and corresponding rising edge of the ‘Rx Clock’.
10. Timing for an external clock input to the Xtal/Clock pin.
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