AX.25 Modem
CMX7031/CMX7041
AC Parameters
Notes
Min.
Typ.
Max.
Unit
MOD 1 and MOD2
Power-up to Outputs Stable
Attenuation (at 0dB)
41
43
–
1.0
50
0
100
+1.0
µs
dB
Cumulative Attenuation Error
(wrt attenuation at 0dB)
Output Impedance
0
600
500
–
–
–
+0.6
–
–
dB
k
µA
V
0.6
–
–
–
0.5
20
42
42
Enabled
Disabled
Output Current Range (AV = 3.3V)
±125
DD
Output Voltage Range
Load Resistance
44
AV –0.5
DD
–
k
41
Power-up refers to issuing a C-BUS command to turn on an output. These limits
apply only if V is on and stable. At power supply switch-on, the default state
is for all blocks, except the XTAL and C-BUS interface, to be in placed in
powersave mode.
Notes:
BIAS
42
43
44
Small signal impedance, at AV = 3.3V and Tamb = 25°C.
With respect to the signal at the feedback pin of the selected input port.
DD
Centred about AV /2; with respect to the output driving a 20k load to AV /2.
DD
DD
2013 CML Microsystems Plc
Page 42
D/7031/7041_FI-4.x/5
CMLMICRO [ CML MICROCIRCUITS ]
