TDA5251 Infineon Technologies, TDA5251 Datasheet - Page 34

• Manufacturer Part Number: TDA5251
• Description: TXRX FSK/ASK SGL LP TSSOP-38
• Manufacturer: Infineon Technologies
• Type: Transceiverr

Specifications of TDA5251

• Package / Case: 38-TSSOP
• Frequency: 315MHz
• Data Rate - Maximum: 64kbps
• Modulation Or Protocol: ASK, FSK
• Applications: RKE, Remote Control Systems
• Power - Output: 13dBm
• Sensitivity: -109dBm
• Voltage - Supply: 2.1 V ~ 5.5 V
• Current - Receiving: 9.3mA
• Current - Transmitting: 14mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Operating Frequency: 0.35 MHz
• Operating Supply Voltage: 2.5 V, 3.3 V, 5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 4.4mm
• Product Length (mm): 9.7mm
• Operating Supply Voltage (min): 2.1V
• Operating Supply Voltage (max): 5.5V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Compliant
• Other names: SP000014554; TDA5251; TDA5251INTR; TDA5251XT

This means that the device needs t
When activating TX it requires t
For timing information refer to Table 4-3.
For test purposes a TESTMODE is provided by the Sequencer as well. In this mode the BLOCK_PD
register be set to various values. This will override the Sequencer timing. Depending on the settings
in Config Register 00H the corresponding building blocks are enabled, as shown in the subsequent
figure.
Figure 2-17
2.4.19
It supports an external logic with a programmable Clock at pin 26 (CLKDIV).
Figure 2-18
The Output Selection and Divider Ratio can be set in the CLK_DIV register.
Data Sheet
Clock Divider
Sequencer‘s capability
Clock Divider
13 MHz
INTERNAL BUS
TXSU
INTERNAL BUS
COUNTER
WINDOW COUNT COMPLETE
4 BIT
ASK/FSK
DDSU
RESET
32 kHz
RX ON
TX ON
setup time to enable the power amplifier.
setup time to start the data detection after RX is activated.
32 kHz
34
16
16
2
16
CLKDiv
RC- OSC.
XTAL FREQU.
26
SELECT
Functional Description
TDA5251 F1
Version 1.1
sequencer_raw.wmf
2007-02-26
clk_div.wmf