SA58640 Datasheet, PDF (10/16 Pages) NXP Semiconductors – Low-voltage mixer FM IF system

Philips Semiconductors
SA58640
Low-voltage mixer FM IF system
6
I_CC
(mA)
5
V_CC = 7 V
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4
5V
3
−55 −35 −15 5
25 45 65 85 105 125
t (°C)
Fig 5. I_CC vs. temperature and supply voltage
5
(dB)
−5
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(1)
−15
−25
−35
(2)
−45
(3)
−55
(4)
−65
−125 −105
−85
−65
−45
−25
RFlevel (dBm)
rà V_CC = 5 V; RF = 45 MHz; deviation = 5 kHz; audio
level = 117.6 mV_RMS
(1) Audio
(2) AM rejection
(3) THD + noise
(4) Noise
Fig 7. Sensitivity vs. RF level (+25 qC)
20
IF output
power
(dBm)
0
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RF = 45 MHz
IF = 455 kHz
−20
−40
(1)
(2)
−60
−80
−66
46
26
6
14
34
RF⁽³⁾ input level (dBm)
(1) Fund product
(2) 3rd order product
X (3) 50 input
Fig 6. Mixer third order intercept and compression
1.9
(V)
1.5
1.1
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85 °C
27 °C
−40 °C
0.7
0.3
−125
−105
−85
−65
−45
RF_level (dBm)
Fig 8. RSSI vs. RF level and temperature (V_CC = 5 V)
9397 750 14161
Objective data sheet
Rev. 01 — 1 November 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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