User Manual

8 MHX-920 Operating Manual: Chapter 2 Electrical/Physical
IMPORTANT:
For best performance, it is
strongly recommended to use
a separate, linearly regulated
supply for Vcc Radio. Do
not directly feed a switching
power supply into Vcc
Radio.
For OEM design simplicity,
connect both the radio and
logic Vcc connections
together.
Caution: Using any other power
supply which does not provide the
proper voltage or current could
damage the MHX-920 module.
2.3 DC Characteristics
Sym Characteristic Min Typ Max Units
AV
CC
Radio Supply Voltage 4.9 5.0 5.5 V
DV
CC
Logic Supply Voltage 4.75 5.0 5.5 V
V
POT
Power On Reset Threshold Voltage 1.8 2 2.2 V
V
RST
Reset Pin Threshold Voltage DV
CC
/
2
V
AI
CCR
Radio Supply Current in Receive Mode 96 107 117 mA
AI
CCT
0
Radio Supply Current at 1mW Transmit 68 108 119 mA
AI
CCT
1
Radio Supply Current at 10mW Transmit 111 123 135 mA
AI
CCT
2
Radio Supply Current at 100mW Transmit 157 174 191 mA
AI
CCT
3
Radio Supply Current at 1W Transmit 398 442 486 mA
DI
CC
Logic Supply Current 95 105 115 mA
V
IL
Input Low Voltage (Pins 23,24,27) -0.5 .3DV
CC
V
V
IH
Input High Voltage (Pins 23,24,27) 0.6V
CC
V
CC
+.5 V
V
OL
Output Low Voltage (Pins 21,22,26,28-
33)
0.6 V
V
OH
Output High Voltage (Pins 21,22,26,28-
33)
4.2 V
I
SRCE
Sourcing Current (Pins 21,22,26,28-33) 10 mA