SA606_15 Datasheet, PDF (15/33 Pages) NXP Semiconductors – Low-voltage high performance mixer FM IF system

NXP Semiconductors
SA606
Low-voltage high performance mixer FM IF system
300
V_o(aud)RMS
(mV)
200
100
V_CC = 7.0 V
5.0 V
3.0 V
2.7 V
002aaf421
0
−55
−35
−15
5
25
45
65
85
Fig 15. RMS audio output voltage versus ambient temperature
105
125
T_amb (°C)
13. Application information
SA606
Product data sheet
C26 _R18
3.3 kΩ
R17
C15
2.4 kΩ
FL1
C23
FL2
C21
C18 C17
20 19 18 17 16 15 14 13 12 11
mixer
IF amp
OSC ^RSSI
limiter
quad
45 MHz
input
1
C1
L1
C2
VREG
audio
2 3 4 5 67
89
C9
C8
C7
C10
R11
10 kΩ
R10 ^C12
8.2 kΩ
C5
L2
C27
R19
11 kΩ
C6
X1
C19
390 pF
RSSI_OUT V_CC AUDIO_OUT
10
IFT1
C14
002aag098
The layout is very critical in the performance of the receiver. We highly recommend our demo
board layout.
All of the inductors, the quad tank, and their shield must be grounded. A 10 F to 15 F or higher
value tantalum capacitor on the supply line is essential. A low frequency ESR screening test on this
capacitor will ensure consistent good sensitivity in production. A 0.1 F bypass capacitor on the
supply pin, and grounded near the 44.545 MHz oscillator improves sensitivity by 2 dB to 3 dB.
Fig 16. SA606 45 MHz application circuit (SA606DK demo board)
All information provided in this document is subject to legal disclaimers.
Rev. 6 — 8 November 2013
© NXP B.V. 2013. All rights reserved.
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