tda5235 Infineon Technologies Corporation, tda5235 Datasheet - Page 142

• Manufacturer Part Number: tda5235
• Description: Enhanced Sensitivity Double-configuration Receiver With Digital Baseband Processing
• Manufacturer: Infineon Technologies Corporation

Data Sheet
G2.8
G2.9
G2.10 digital RSSI slope,
G2.11 Resistive load at
G2.12 Capacitive load at
G3
G3.1
G3.2
G3.3
G3.4
#
Parameter
digital RSSI error,
user trimmed via
SFRs RSSISLOPE
and RSSIOFFS
digital RSSI slope,
untrimmed
user trimmed via
SFRs RSSISLOPE
and RSSIOFFS
RSSI pin
RSSI pin
2nd IF Filter (3rd order Bandpass Filter)
Center frequency
-3 dB BW
-3 dB BW tolerance
-3 dB BW tolerance
Symbol
DRSSI
dV
dV
dV
dV
R
C
f
BW
tol_BW
tol_BW
center
L,RSSImax
L,RSSI
RSSI
mix_in
RSSI
mix_in
-3dB
/
/
dig_t
-3dB
-3dB
min. typ.
-1
2
2.35
100
262
-5
-6
Limit Values
2.5
2.5
274
50
80
125
200
300
142
max.
+1
3
2.65
20
288
+5
+6
Unit
dB
LSB
/dB
LSB
/dB
kΩ
pF
kHz
kHz
%
%
Remarks
RSSI register readout
RSSI register readout;
typical 600 mV/60 dB =
10 mV/dB,
1mV = 1 LSB (10-bit ADC)
8-bit readout: 4mV=1LSB
RSSI register readout;
typical 600 mV/60 dB =
10 mV/dB,
1mV = 1 LSB (10-bit ADC)
8-bit readout: 4mV=1LSB
Asymmetric BPF corners:
f_center=sqrt(f
Use AFC for more
symmetry
For BW = 125, 200, 300
kHz
For BW = 50, 80 kHz
Test Conditions
V1.0, 2010-02-19
low
Reference
TDA5235
* f
high
);
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