TDA5210T Infineon Technologies, TDA5210T Datasheet - Page 33
![IC ASK/FSK RECEIVER P-TSSOP-28](/photos/14/17/141745/448-28-tssop-1_sml.jpg)
TDA5210T
Manufacturer Part Number
TDA5210T
Description
IC ASK/FSK RECEIVER P-TSSOP-28
Manufacturer
Infineon Technologies
Datasheet
1.TDA5210.pdf
(53 pages)
Specifications of TDA5210T
Frequency
810MHz ~ 870MHz, 400MHz ~ 440MHz
Sensitivity
-107dBm
Modulation Or Protocol
ASK, FSK
Applications
Alarm Systems, Communication Systems
Current - Receiving
4.8mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Voltage - Supply
4.6 V ~ 5.5 V
Operating Temperature
-40°C ~ 105°C
Package / Case
28-TSSOP
Operating Temperature (min)
-40C
Operating Temperature Classification
Automotive
Product Depth (mm)
4.4mm
Product Length (mm)
9.7mm
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
SP000087156
Wireless Components
This circuit charges the capacitor C with an inrush current I
220µA for a duration of T
equal to the voltage U
2.5V. As soon as these voltages are equal or the duration T
precharge circuit is disabled.
as the sum of R1 and R2 is sufficiently large and thus can be neglected. T2 can
then be calculated according to the following formula:
The voltage transient during the charging of C2 is shown in the following figure:
Figure 4-11
The voltage appearing on the capacitor C connected to pin 20 is shown in the
following figure. It can be seen that due to the fact that it is charged by a con-
stant current source it exhibits is a linear increase in voltage which is limited to
U
input. The time constant appearing in this case can be denoted as T3, which
can be calculated with
2
2
Smax
is the time constant of the charging process of C which can be calculated as
20k
T3
= 2.5V which is also the approximate operating point of the data filter
T
2
=
· C2
2.4V
3V
Voltage appearing on C2 during precharging process
U
----------------------- -
2
220 A
U2
Smax
ln
§
¨
¨
¨
¨
©
1
C
s
4 - 12
2
1
at the input of the data filter. This voltage is limited to
3
4 .
V
=
2
V
until the voltage U
---------------- - C
220 A
·
¸
¸
¸
¸
¹
2.5V
2
2
1
6 .
T2
c
appearing on the capacitor is
Specification, May 2001
2
is exceeded the
load
Applications
TDA 5210
of typically
e-fkt1.WMF