tda5235 Infineon Technologies Corporation, tda5235 Datasheet - Page 141

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

Data Sheet
E9
E10
1
F1
F2
F3
F4
2
G1
G2
G2.1
G2.2
G2.3
G2.4
G2.5
G2.6
G2.7
st
nd
#
IF Buffer Characteristics
IF Mixer, RSSI and Filter Characteristics
Parameter
Inband fractional spur
3dB Overall Analog
Frontend Bandwidth
Input impedance
Output impedance
Voltage gain
Buffer switch
isolation (CERFSEL)
Mixer input
impedance
RSSI
Dynamic range
(Linearity +/- 2 dB)
Linearity
Temperature drift
within linear dynamic
range
Output dynamic
range
analog RSSI error,
untrimmed
analog RSSI slope,
untrimmed
digital RSSI error,
untrimmed
Symbol
BW
R
R
AV
d
R
DR
DR
DR
V
DRSSI
dV
dV
DRSSI
isolation
RSSI+
in_IF
out_IF
in_IF
RSSI
mix_in
Buffer
RSSI
LIN
TEMP
ANA
/
ana
dig_u
min. typ.
-40
290
290
3
60
290
-110
-115
-110
-1
-2.5
0.8
-4
8
-4
Limit Values
230
330
330
4
330
10
141
max.
370
370
5
390
-30
-60
-50
+1
+1.5
2.0
+2
12
+2
Unit
dBc
kHz
Ω
Ω
dB
dB
Ω
dBm
dBm
dBm
dB
dB
V
dB
mV/dB
dB
Remarks
LNA input to Limiter
output, excluding external
CER filter
f
f
f
Z
Z
f
see
f
Related to RF input
matched to 50 Ω
applies for digital RSSI;
AGC on
applies for analog RSSI
@ 50kHz BPF, AGC off
applies for analog RSSI
@ 300kHz BPF, AGC off
-95 dBm...-35 dBm;
applies for digital RSSI
applies for digital RSSI
at RSSI pin
typical 600 mV/60 dB =
10 mV/dB
RSSI register readout
Test Conditions
-95 dBm...-35 dBm;
at RSSI pin;
IF
IF
IF
IF
IF
source
load
= 10...12 MHz
= 10...12 MHz
= 10...12 MHz
= 10...12 MHz
= 10...12 MHz
Figure 6
= 330 Ω
= 330 Ω
V1.0, 2010-02-19
Reference
TDA5235
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