U4255BM-MFN Atmel, U4255BM-MFN Datasheet - Page 25

• Manufacturer Part Number: U4255BM-MFN
• Description: IC RCVR AM/FM FRONT-END 44-SSOP
• Manufacturer: Atmel

Specifications of U4255BM-MFN

• Frequency: 70MHz ~ 160MHz
• Modulation Or Protocol: AM, FM
• Applications: AM/FM Radio Receiver
• Current - Receiving: 50mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 7.5 V ~ 10 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-SSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Sensitivity: -
• Memory Size: -
• Data Rate - Maximum: -

Diagrams
4519A–AUDR–03/02
The following data was measured with the application board (see Figure 20).
In the measurement setup, a 50-
the antenna input by a 50-
input. The generator level specified is the output voltage of this 50-
load. If the application board is replaced by a 75- resistor, the voltage at this resistor is
6 dB below the specified voltage level of the 50
Figure 12. FM Demodulator
Integrated bandfilter BW setting: 120 kHz, Bits 0 to 2 = 0, Bit 3 = 1;
1 kHz modulation frequency; 50 s de-emphasis (THD)
Figure 13. Multipath Sensor
AM modulation frequency 20 kHz; generator level 40 dB V
0.9
0.8
0.6
0.4
0.3
0.2
0.0
0.7
0.5
1.0
0.1
4
3
2
0
0
5
1
0
10
10
20
series resistor to achieve 75-
20
Frequency deviation ( kHz )
30
30
generator is terminated by 50
AM modulation depth ( % )
40
MPX
40
50
50
+85°C
60
60
generator.
70
THD
70
-40°C
-40°C
80
80
+85°C
+85°C
termination at the antenna
-40°C
90
90
U4255BM-M
100
100
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
and connected to
generator at 50
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