TDA5230XT Infineon Technologies, TDA5230XT Datasheet - Page 70

• 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

If bandwidth switching is required, the first IF Filter is wideband, and is used if the IF MUX
is switched to IFBUF-IN. The second IF Filter is narrowband, if the IF MUX is switched
to LIM-IN+, the narrow characteristic of this filter overrides the wide first IF Filter.
Figure 31
Dual:
ADDR:
2.4.8.2
The limiter is an AC coupled multistage amplifier with a wide bandpass characteristic
centered around 10.7 MHz. The limited IF signal is fed to the digital FSK Demodulator.
The limiter circuit also acts as a Receive Signal Strength Indicator (RSSI) generator that
produces a voltage signal proportional to the logarithm of the input signal level.
Data Sheet
Bit R/W Description
1
0
AIF0
W
W
0x3F
Limiter, RSSI
One-Filter application
Two-Filter application
Optional One-Filter
application
(2nd IF-filter disabled)
IFBUF: Enable IF Buffer amplifier
0: Buffer disabled, used for single IF filter
1: Buffer enabled, used for dual IF filter configuration
IFMUX: select IF-limiter input
0: use pin LIM-IN+ as input
1: use pin IFBUF-IN as input
and BIF0:
and
External IF Filter Configurations
0x60
Conf.A IF Buffer Amplifier Enable
IF-OUT
IFBUF-IN
66
IFBUF-OUT
Functional Description
Reset Value: 0x00
LIM-IN+
Version 4.0, 2007-06-01
TDA523x