ATR4251-PFQY Atmel, ATR4251-PFQY Datasheet - Page 12

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ATR4251-PFQY

Manufacturer Part Number
ATR4251-PFQY
Description
IC AMP AM/FM ANT HI RANGE 24-QFN
Manufacturer
Atmel
Datasheet

Specifications of ATR4251-PFQY

Current - Supply
11mA ~ 17mA
Frequency
AM, FM
Gain
6dB
Noise Figure
2.8dB
Package / Case
24-VQFN Exposed Pad, 24-HVQFN, 24-SQFN, 24-DHVQFN
Rf Type
Broadcast Radio
Voltage - Supply
8 V ~ 11 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
P1db
-
Test Frequency
-
9. Application Circuit (Demo Board)
Figure 9-1.
12
VB+ 10
AM/FM application combined with AM AGC
with the following capability
1. Testing FM + FM AGC
connector FM as input
connector AM/FM_OUT as output
2. Testing AM + AM AGC
connector AM as input
connector AM/FM_OUT as output
GND
FM
AM
ATR4251
4.7
4.7
R23
R24
2.2 nF
BA679
C29
D1
Common Base Configuration
+
+
2.2 nF
2.2 nF
10 µF
10 µF
C2
C5
C26
C27
100 nF
100 nF
C23
C24
1 k
BA679
6
1
10 nF
R3
D2
R7
(2)
C6
180 nH
4
3
L3
C28
1 pF
TR1
2.2 pF
51
R2
C1
100 pF
C11
120 nH
47
R1
L1
22 pF
C4
100 nF
2.2 pF
1 pF
RS1
(4)
2
C3
(4)
C19
100
C18
R21
100
R6
+VS
T1
100 nF
+VS
BC858
R5
(2)
33 pF
100 nF
C30
C17
C20
C21
2.2 µF
AM/FM_OUT
1 µF
C7
4.7 M
L3
470 nH
33
R4
1 nF
R20
C8
C31
470 nF
(1)
220 nF
3 k
1 nF
68
R25
15 nF
C12
R8
C10
+
(3)
(1) AM Output impedance
(2) Leakage current reduction
(3) AM AGC threshold
(4) AM AGC threshold
10 µF
C32
(50
R11
10 k
10 k
R9
(2)
adjustment)
(3)
+VS
220 nF
100
C13
R10
4913J–AUDR–10/09
BA779-2
D3
T2
BC858
4.7 µF
R12
2.2 k
C33
+
(2)

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