TDA5230 Infineon Technologies, TDA5230 Datasheet - Page 70

• Manufacturer Part Number: TDA5230
• Description: IC RECEIVER ASK/FSK 28-TSSOP
• Manufacturer: Infineon Technologies
• Type: Receiverr

Specifications of TDA5230

• Package / Case: 28-TSSOP
• Frequency: 433MHz ~ 450MHz, 865MHz ~ 868MHz
• Sensitivity: -111dBm
• Data Rate - Maximum: 20 kbps
• Modulation Or Protocol: ASK, FSK
• Applications: RKE, TPM, Security Systems
• Current - Receiving: 8mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 3 V ~ 3.6 V, 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 105°C
• Operating Frequency: 870 MHz
• Operating Supply Voltage: 3.3 V, 5 V
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: SP000076520; TDA5230; TDA5230INTR

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