PBL40215 Просмотр технического описания (PDF) - Ericsson
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PBL40215 Datasheet PDF : 22 Pages
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Limiting Amplifier and RSSI ( Received Signal Strength Indicator ).
PBL 402 15
The stage consists of a limiting amplifier chain with an RSSI detector. The inputs are internally coupled from the channel
selection filter which limits the noise bandwidth. A balanced DC offset correction loop, provides maximum sensitivity, and
ensures a short settling time upon power up.
An RSSI output provides a voltage proportional to the logarithm of the rectified input level. The rise time response of the
RSSI output and the peak hold is dependent upon the external circuit.
Limiting Amplifier strip and RSSI, Table.
Parameter
Frequency range
Limiter 1 dB bandwidth
Voltage gain
RSSI range
RSSI minimum detection level
RSSI maximum detection level
RSSI slope
Zero scale RSSI output voltage
Full scale RSSI output voltage
RSSI relative error
RSSI rise time
Feedback capacitance
Condition
measured at IFIN
measured at IFIN
best fit to straight line (a)
20 pF load
Symbol
ƒ
ƒ1dB
G
RR
RDMIN
RDMAX
RSLOPE
VRZERO
VRFULL
RERR
tRISE
CCAP
Min.
22
74
-9
Typ.
11.7
74
15.2
375
1500
2
18
Max.
-83
±2.5
Unit
MHz
MHz
dB
dB
dBm
dBm
mV/dB
mVpk
mVpk
dB
µs
nF
a. The RSSI relative accuracy is the deviation of the RSSI value from a best fit straight line fitted to several calibration points.
These points are determined for each part.
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