FX589 Datasheet, PDF (15/18 Pages) CML Microcircuits – Low-Voltage/High-Speed GMSK Modem

Specification ......
Characteristics
Receive Parameters
Rx Amplifier -
Input Impedance
Output Impedance
Voltage Gain
Rx Filter Signal Input Level
Rx Time Delay
On-Chip Xtal Oscillator
R _IN
R _OUT
Voltage Gain
See Note
Min.
Typ.
Max.
Unit
7
8, 11
9
12
12
1.0
-
-
10.0
-
50.0
0.7
1.0
-
-
10.0
-
-
50.0
-
25.0
-
MΩ
-
kΩ
-
dB
1.3
V p-p
3.0
bit-periods
-
MΩ
-
kΩ
-
dB
Notes
1. Not including current drawn from the FX589 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.
11. 'Typical' level shown is at V_DD = 5.0V; actual levels are proportional to applied V_DD.
12. Small signal measurement at 1.0kHz with no load on Xtal output.
13. Data rate
may
be
extended
to
80kb/s
at
BT
=
0.5
and
V
DD
=
4.5
to
5.5
V
only.
In
this
case
a
10.24MHz
Xtal may be used, care must be taken with the external components.
15