TDA5230XT Infineon Technologies, TDA5230XT Datasheet - Page 67

• Manufacturer Part Number: TDA5230XT
• Manufacturer: Infineon Technologies

Specifications of TDA5230XT

• Operating Temperature (min): -40C
• Operating Temperature (max): 105C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 4.4mm
• Product Length (mm): 9.7mm
• Lead Free Status / Rohs Status: Compliant

Selection of IF Attenuation
Use always minimum IF Attenuation (0dB). Only if there is an external LNA used, IF
Attenuation should be set to the gain of the external LNA. If there is one or more SAW
filters, the insertion loss should be reduced from the external LNA gain.
If strong out of band disturbers are expected, an increase of IF Attenuation may increase
large signal immunity, at the cost of slight reduction in sensitivity.
RFC:
ADDR:
LOC:
ADDR:
2.4.7.1
The receiver enable signal is offered at the dedicated RX-RUN/RXD Pin to control
external components such as an external LNA. Whenever the receiver is active, the RX-
RUN output is high.
Note that the same output pin may be also configured to provide the received data in
Transparent Mode.
Data Sheet
3:0
7:5
3:0
Bit R/W Description
Bit R/W Description
4
4
RF Control Register
Local Oscillator Control Register
W
W
W
W
W
0x12
0x16
RX-RUN/RXD Pin
RFOFF: Switch off RF path (for RSSI trimming)
0: RF path enabled
1: RF path off
IFATT: Adjust IF attenuation in 16 steps to trim the gain RFIN --> IF-OUT
0000: 0 dB attenuation
1111: 12 dB attenuation
Always set to 0
SSBSEL: Local Oscillator Injection Mode Selection
0: Lo-Side LO Injection .. use for TDA5230
1: Hi-Side LO Injection .. use for TDA5231
Always set to 0
63
Functional Description
Reset Value: 0x00
Reset Value: 0x00
Version 4.0, 2007-06-01
TDA523x