Rainbow Electronics T5744 - Manual (Page 14)

14
T5744
4521A–RKE–02/02
Dynamic range RSSI
amplifier
DR
RSSI
60 dB
RSSI output voltage range V
RSSI
1.0 3.0 V
RSSI gain G
RSSI
20 mV/dB
RI of Pin CDEM for cut-off
frequency calculation
R
I
28 40 55 k
Ω
Recommended CDEM for
best performance BR_Range0
BR_Range1
BR_Range2
BR_Range3
CDEM
33
18
10
6.8
nF
nF
nF
nF
Upper cut-off frequency data
filter Upper cut-off frequency
BR_Range0
BR_Range1
BR_Range2
BR_Range3
f
u
1.75
3.5
7.0
14.0
2.2
4.4
8.8
17.6
2.65
5.3
10.6
21.2
kHz
kHz
kHz
kHz
Digital Ports
Data output
- Saturation voltage LOW
- Internal pull-up resistor
I
ol
= 1 mA V
OI
R
Pup
39
0.08
50
0.3
65
V
k
Ω
ENABLE input
- Low-level input voltage
- High-level input voltage
Sleep mode
Receiving mode V
Il
V
Ih
0.8
×
V
S
0.2
×
V
S
V
V
MODE input
- Low-level input voltage
- High-level input voltage
Division factor = 10
Division factor = 14 V
Il
V
Ih
0.8
×
V
S
0.2
×
V
S
V
V
BR_0 input
- Low-level input voltage
- High-level input voltage
V
Il
V
Ih
0.8
×
V
S
0.2
×
V
S
V
V
BR_1 input
- Low-level input voltage
- High-level input voltage
V
Il
V
Ih
0.8
×
V
S
0.2
×
V
S
V
V
TEST input
- Low-level input voltage Test input must always be set to
LOW
V
Il
0.2
×
V
S
V
Electrical Characteristics (continued)
Parameters Test Conditions Symbol Min. Typ. Max. Unit
fcu_DF
1
2
π
R
1
×
CDEM
Ч Ч
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