TDA5251 Infineon Technologies, TDA5251 Datasheet - Page 35

• 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

Table 2-29
Note: Data are valid 500 µs after the crystal oscillator is enabled (see Figure 2-15 and Figure 2-
16, t CLKSU ).
Table 2-30
Note: As long as default settings are used, there is no clock available at the clock output during
Power Down. It is possible to enable the clock during Power Down by setting CLK_EN (Bit D9) in
the Config Register (00H) to HIGH.
2.4.20
The input of the 6Bit-ADC can be switched between two different sources: the RSSI voltage (default
setting) or a resistor network dividing the Vcc voltage by 5.
Table 2-31
Data Sheet
D3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
SELECT
D5
0
0
1
1
0
1
D2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
RSSI and Supply Voltage Measurement
CLK_DIV Output Selection
CLK_DIV Setting
Source for 6Bit-ADC Selection (Register 08H)
D1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
D4
0
1
0
1
D0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Total Divider Ratio
Input for 6Bit-ADC
RSSI (default)
Vcc / 5
10
12
14
16
18
20
22
24
26
28
30
32
2
4
6
8
Output from Divider (default)
35
Window Count Complete
13.125MHz
Output
32kHz
Output Frequency [MHz]
0.730 (default)
0.,55
0.94
0.82
0.47
0.44
0.41
Functional Description
0.66
3.3
2.2
1.6
1.3
1.1
0.6
0.5
6.6
TDA5251 F1
Version 1.1
2007-02-26