SA616 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 5 — 24 July 2012 13 of 31
NXP Semiconductors
SA616
Low-voltage high performance mixer FM IF system
455 kHz IF at 3 V.
Fig 13. RSSI output voltage versus IF level
V
CC
=3V
Fig 14. RSSI output voltage versus RF level
IF level (dBm)
95 51555 3575
002aaf419
0.8
1.6
2.4
V
o(RSSI)
(V)
0
0.4
1.2
2.0
T
amb
= +85 °C
room
40 °C
RF level (dBm)
125 254585 65105
002aaf420
0.9
1.5
2.1
V
o(RSSI)
(V)
0.3
0.6
1.2
1.8
T
amb
= +85 °C
+27 °C
40 °C
SA616 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 5 — 24 July 2012 14 of 31
NXP Semiconductors
SA616
Low-voltage high performance mixer FM IF system
13. Application information
Fig 15. RMS audio output voltage versus ambient temperature
T
amb
(°C)
55 1255
002aaf421
65
10585
452515
35
V
CC
= 7.0 V
5.0 V
3.0 V
2.7 V
100
200
300
V
o(aud)RMS
(mV)
0
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. SA616 45 MHz application circuit (SA616DK demo board)
002aaf408
mixer
IF amp
limiter
OSC
RSSI
quad
audio
VREG
20 19 18 17 16 15 14 13 12 11
1234567 8910
C23 C21
FL1
C18 C17
FL2
R17
2.4 kΩ
R18
3.3 kΩ
C26
C15
C9
C10
V
CC
RSSI_OUT
R11
10 kΩ
C12
R10
8.2 kΩ
AUDIO_OUT
C27
R19
11 kΩ
IFT1
C19
390 pF
C14
C7
L2
X1
C6
C8
C5
L1
C1
C2
45 MHz
input
SA616 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 5 — 24 July 2012 15 of 31
NXP Semiconductors
SA616
Low-voltage high performance mixer FM IF system
[1] This is a 30 kHz bandwidth 455 kHz ceramic filter. Al the characterization and testing are done with this
wideband filter. A more narrowband 15 kHz bandwidth 455 kHz ceramic filter that may be used as an
alternative selection is Murata CFUKG455KE4A-R0.
[2] R5 can be used to bias the oscillator transistor at a higher current for operation above 45 MHz.
Recommended value is 22 k, but should not be below 10 k.
Table 7. SA616DK demo board component list
Component Description
C1 51 pF NPO ceramic
C2 220 pF NPO ceramic
C5, C9, C14, C17,
C18, C21, C23, C26
100 nF 10 % monolithic ceramic
C6 30 pF trim cap
C7 1 nF ceramic
C8, C15 10.0 pF NPO ceramic
C10 15 F tantalum (minimum)
C12 2.2 F 10 % tantalum
C19 390 pF 10 % monolithic ceramic
C27 2.2 F tantalum
FL1, FL2
[1]
ceramic filter Murata CFUKF455KB4X-R0
IFT1 330 H Toko 836AN-0129Z
L1 0.33 H Toko A638AN-0158Z
L2 1.2 H Toko FSLM2520-1R2K
X1 44.545 MHz crystal ICM4712701
R5
[2]
not used in application board
R10 8.2 k5 % 1/4W carbon composition
R11 10 k5 % 1/4W carbon composition
R17 2.4 k5 % 1/4W carbon composition
R18 3.3 k5 % 1/4W carbon composition
R19 11 k5 % 1/4W carbon composition

SA616DK/03,118

Mfr. #:
Manufacturer:
NXP Semiconductors
Description:
IC MIXR 150MHZ RSSI EQUIP 20SSOP
Lifecycle:
New from this manufacturer.
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