Module Integration Manual
Page 4 of 18
Interrogator RF Board (400.00152.xxxx)
2
B
ASIC
S
PECIFICATIONS
2.1
A
BSOLUTE
M
AXIMUM
V
ALUES
The system components have been selected and combined to allow continuous operation to an
enclosure temperature of 85
⁰
C. Initial prototypes are limited to +75
⁰
C. This allows for a +15
⁰
C
enclosure temperature rise. Temperature derating is expected above 2000 meters altitude;
however this has not been evaluated. Condensing humidity can alter the RF circuit properties
and, in extreme cases, result in short circuits within the circuit.
Parameter
Min
Nom
Max
Notes
Temperature
-30
⁰C
+85
⁰C
Enclosure temperature, to allow +70
⁰C
ambient
Pressure
1 atm
Integrator must determine derating with
elevation
Humidity
95%
Non-condensing
Voltage, any
pin
-0.4V
+6V
RF input
0dBm
measurement mode
Table 1 Operation of the device beyond these limits could result in permanent damage
2.2
H
OST
I
NTERFACE
The INTERROGATOR RF BOARD requires 2.5W (nominal) from a single 5V supply. Operation
above 5.25V
DC
power can lead to excess power dissipation and will result in a reduction of the
maximum ambient temperature. Control signals should typically not exceed 0
– 3.3V. Internal
power supplies are all internally regulated to 3.3V, and 1.8V.
All digital IO is buffered by series resistors, common mode chokes, line drivers, and Schmidt
Trigger receivers, as appropriate. When operated in a 5V logic system host, level translators
should be employed. The series resistive buffers and internal pull-up resistors result in
unreliable input logic low levels from some 5V CMOS logic hosts.
Parameter
Min
Nom
Max
Notes
5V0 Voltage
3.75V
5.0V
5.25V
Supplies 3.3V power to module via regulator
5V0 Current
0.35A
3V3 Voltage
2.25V
3.3V
5.25V
Supplies 1.8V power to DSP core via
regulator
3V3 Current
0.15A
COM0 Baud
4800
9600
115200
EEPROM settings
COM0 duplex
Half
Can be set for Full duplex
COM0
Address
1
1
247
COM0 other
8N1
Data: 8; Parity: N, E, O; Stop 1, 2
COM1 Baud
115200
Full duplex, 8 bits, no parity, 1 stop bit, addr.
1
V
IH
2.6V
3.3V
except I2CDAT
