OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

SA58640DK,112

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
SA58640 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 3 — 12 April 2011 7 of 20
NXP Semiconductors
SA58640
Low-voltage mixer FM IF system
12. Performance curves
RF = 45 MHz; IF = 455 kHz.
(1) Fund product.
(2) Third-order product.
(3) 50 Ω input.
Fig 3. Supply current versus ambient temperature Fig 4. Mixer third-order intercept and compression
V
CC
= 5 V; RF = 45 MHz; deviation = ±5kHz;
V
o(aud)RMS
= 117.6 mV.
(1) Audio.
(2) AM rejection.
(3) THD+N.
(4) Noise.
Fig 5. Relative level of audio, AM rejection, THD+N
and noise versus RF level (T
amb
=+25°C)
Fig 6. RSSI output voltage versus RF level
(V
CC
=5V)
T
amb
(°C)
002aab128
4
5
6
I
CC
(mA)
3
−55 12510585455−35 25 65−15
V
CC
= 7 V
5 V
RF
(3)
input level (dBm)
−66 3414−26 −6−46
002aaf414
−40
−20
−60
0
20
IF output power
(dBm)
−80
(1)
(2)
RF level (dBm)
−125 −25−45−85 −65−105
002aab131
−25
−55
−45
−35
−15
−5
5
−65
(1)
(2)
(3)
(4)
relative level
(dB)
RF level (dBm)
−125 −45−65−105 −85
002aab132
1.1
0.7
1.5
1.9
V
o(RSSI)
(V)
0.3
85 °C
27 °C
−40 °C
SA58640 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 3 — 12 April 2011 8 of 20
NXP Semiconductors
SA58640
Low-voltage mixer FM IF system
13. Application information
Fig 7. RMS audio output voltage versus ambient temperature
T
amb
(°C)
002aab133
200
150
250
300
100
V
o(aud)RMS
(mV)
−55 12585 105455−35 25 65−15
5 V
V
CC
= 7 V
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 μF to 15 μF 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 μF bypass capacitor on the supply pin V
CC
, and grounded near the 44.545 MHz oscillator improves sensitivity
by 2 dB to 3 dB.
Fig 8. 45 MHz application circuit
002aab12
6
20 19 18 17 16 15 14 13 12 11
FL1
C23 C21
C18 C17
C26
FL2
R17
2.4 kΩ
R18
3.3 kΩ
C15
IFT1
AUDIO_OUTRSSI_OUT V
CC
C14
R19
11 kΩ
R10
10 kΩ
C19
390 pF
C27
2.2 μF
C12
R11
10 kΩ
C9
X1
C6
C10
C7
L2
C8
C5
C1
C2
45 MHz input
L1
67891054321
SA58640
SA58640 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved.
Product data sheet Rev. 3 — 12 April 2011 9 of 20
NXP Semiconductors
SA58640
Low-voltage mixer FM IF system
[1] This value can be reduced when a battery is the power source.
[2] This is a 30 kHz bandwidth 455 kHz ceramic filter. All 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.
[3] R5 can be used to bias the oscillator transistor at a higher current for operation above 45 MHz.
Recommended value is 22 kΩ, but should not be below 10 kΩ.
Table 6. Demo board application component list
Component Value Type
C1 51 pF NPO ceramic
C2 220 pF NPO ceramic
C5 100 nF ± 10 % monolithic ceramic
C6 5 pF to 30 pF trim cap
C7 1 nF ceramic
C8 10.0 pF NPO ceramic
C9 100 nF ± 10 % monolithic ceramic
C10 10 μF
[1]
tantalum (minimum)
C12 2.2 μF ± 10 % tantalum
C14 100 nF ± 10 % monolithic ceramic
C15 10 pF NPO ceramic
C17 100 nF ± 10 % monolithic ceramic
C18 100 nF ± 10 % monolithic ceramic
C19 390 pF ± 10 % monolithic ceramic
C21 100 nF ± 10 % monolithic ceramic
C23 100 nF ± 10 % monolithic ceramic
C26 100 nF ± 10 % monolithic ceramic
C27 2.2 μF tantalum
FL1
[2]
- ceramic filter Murata CFUCF455KB4X-R0
FL2
[2]
- ceramic filter Murata CFUCF455KB4X-R0
IFT1 330 μH Toko 836AN-0129Z
L1 330 nH Toko A638AN-0158Z
L2 1.2 μH nominal FSLM2520-12K
X1 44.545 MHz crystal ICM4712701
R5
[3]
- not used in application board
R10 8.2 kΩ±5%
1
⁄
4
W carbon composition
R11 10 kΩ±5%
1
⁄
4
W carbon composition
R17 2.4 kΩ±5%
1
⁄
4
W carbon composition
R18 3.3 kΩ±5%
1
⁄
4
W carbon composition
R19 11 kΩ±5%
1
⁄
4
W carbon composition
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

SA58640DK,112

Mfr. #:
Buy SA58640DK,112
Manufacturer:
NXP Semiconductors
Description:
IC MIXER 100MHZ UP CONVRT 20SSOP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet