Echelon LONWORKS PLT-22, Руководство пользователя

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PLT-22 Transceiver Electrical Specifications
Table 2.2 lists the electrical specifications of the PLT-22 transceiver when used in
the 110kHz – 140kHz frequency range. All specifications apply over the full
operating temperature and supply voltage ranges unless otherwise indicated.
Table 2.2 PLT-22 Transceiver Electrical Specifications
Parameter Min Typ Max Units
Operating temperature range1
-40 +85 ° C
V
DD5
input supply voltage 4.75 5 5.25 Volts
V
A
input supply voltage
TXLVL = open 8.5 9.7 16 Volts
TXLVL = GND2
11.4 12.0 16 Volts
I
DD5
input supply current
(not including PKD and BIU LED Current)
receive 16 23 mA
transmit 13 18 mA
I
A
input supply current
receive 4 6 mA
transmit 130 250 mA
TXOUT signal level: TXLVL=open, into 50 Ω load 3.6 Volts p-p
TXOUT signal level: TXLVL=GND, into 50 Ω load 7 Volts p-p
Output current limit 1.0 Amps p-p
Output impedance, in-band (transmit) 0.9 1.1 Ohms
Input impedance, in-band (receive) 500 Ohms
PKD output source current @ V
DD5
-0.6 V 8 mA
BIU output source current @ V
DD5
-0.6 V 8 mA
Power management, lower threshold 7.2 7.9 8.5 Volts
Power management, upper threshold 11.1 12.0 12.9 Volts
Notes:
1. Maximum operating temperature is a function of V
A
supply voltage and the maximum
transmission duty cycle for the node. A maximum operating temperature of 85°C is
specified for a V
A
supply ≤ 12.6V and a maximum transmit duty cycle of 65%, which is
the maximum achievable with LONMARK interoperable transceiver parameters and
messages of ≤ 34 Bytes. For other cases see figure 2.2.
2. While operating in the 7V p-p mode (TXLVL = GND), the V
A
supply must not drop below
11.4V under conditions of typical line voltage, room temperature, and typical current drain
(including the PLT-22 transceiver’s typical I
A
transmit current of 130mA). This condition
ensures adequate transmit amplifier headroom to drive the full 7Vp-p signal
2-4 Using the PLT-22 Transceiver