GMSK Packet Data Modem and RF Transceiver
CMX990
7.1.3 Operating Characteristics
Details in this section represent design target values and are not currently guaranteed.
For the following conditions unless otherwise specified:
Clock Frequency = 19.2MHz, Bit Rate = 8k bits/sec, Noise Bandwidth = Bit Rate,
VDDH = VDDVCO = 3.0V to 3.6V, TAMB = -40°C to +85°C.
Notes
Min.
Typ.
Max.
Unit
DC Parameters
IDD (powersaved) at VDDH = 3.3 V
Tx IDD at VDDH = 3.3 V
Rx IDD at VDDH = 3.3 V
2
2
2
–
–
–
5.0
65
85
20
100
120
µA
mA
mA
AC Parameters
Clock Input
'High' pulse width
'Low' pulse width
Signal amplitude
Input impedance (at 19.2 MHz)
3
3
20
20
0.5
TBD
–
–
–
–
–
–
–
–
ns
ns
V p-p
W
µC Interface
Input logic "1" level
Input logic "0" level
Input leakage current (Vin = 0 to VDDH
Input capacitance
Output logic "1" level (lOH = 120 µA)
Output logic "0" level (lOL = 360 µA)
4, 5
4, 5
4, 5
4, 5
5
80%
–
-5.0
–
90%
–
–
–
–
–
10
–
–
–
20%
+5.0
–
–
10%
10
VDDH
VDDH
µA
)
pF
VDDH
VDDH
µA
5, 6
6
'Off' state leakage current (Vout = VDDH
)
–
ã 2004 CML Microsystems Plc
72
D/990/1
CMLMICRO [ CML MICROCIRCUITS ]
