TDA5235
Functional Description
When AGC is activated, RSSI is untrimmed, IFATT <= 5.6dB and the same RSSI offset
should be applied for all bandpass filter settings, then the settings in Table 2 can be
applied, where a small reduction of the RSSI input range can be observed.
Table 2
AGC Settings 1
AGC Threshold Hysteresis = 21.3 dB
AGC Digital RSSI Gain Correction = 15.5 dB
BPF
RSSI Offset
AGC
AGC
AGC
RSSI Input
Range
Reduction
Compensation Threshold Threshold Threshold
(untrimmed) 1)
Offset
63.9 dB
63.9 dB
63.9 dB
51.1 dB
51.1 dB
Low
Up
300 kHz
200 kHz
125 kHz
80 kHz
32
32
32
32
32
8
4
5 dB
5 dB
6
2
5
0
5 dB
11
9
6
2.8 dB
0 dB
50 kHz
5
1) Note: This value needs to be used for calculating the register value
For the full RSSI input range, the values in Table 3 can be applied.
Table 3
AGC Settings 2
AGC Threshold Hysteresis = 21.3 dB
AGC Digital RSSI Gain Correction = 15.5 dB
BPF
RSSI Offset
AGC
AGC
AGC
Compensation Threshold Threshold Threshold
(untrimmed) 1)
Offset
63.9 dB
51.1 dB
51.1 dB
51.1 dB
51.1 dB
Low
Up
300 kHz
200 kHz
125 kHz
80 kHz
-18
-18
-18
4
5
1
11
10
9
7
5
5
50 kHz
32
9
5
1) Note: This value needs to be used for calculating the register value
Data Sheet
32
V1.0, 2010-02-19
INFINEON [ Infineon ]
