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SA58641 Datasheet PDF : 26 Pages
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NXP Semiconductors
SA58641
High performance mixer FM IF system with high-speed RSSI
Table 7. Dynamic characteristics …continued
Tamb = 25 C; VCC = +5 V; unless otherwise specified. RF frequency = 240.05 MHz + 14.5 dBV RF input step-up.
IF frequency = 10.7 MHz; RF level = 45 dBm; FM modulation = 1 kHz with 125 kHz peak deviation. Audio output with
C-message weighted filter and de-emphasis capacitor. Test circuit Figure 18. The parameters listed are tested using
automatic test equipment to assure consistent electrical characteristics. The limits do not represent the ultimate performance
limits of the device. Use of an optimized RF layout will improve many of the listed parameters.
Symbol Parameter
Conditions
Min Typ Max Unit
RSSI(range) RSSI range
RSSI
RSSI variation
Zi(IF)
IF input impedance
Zo(IF)
IF output impedance
Zi(lim)
limiter input impedance
Zo(lim)
limiter output impedance
-
70
-
dB
-
2.0 -
dB
-
330 -
-
330 -
-
330 -
-
330 -
Vo(RMS)
RMS output voltage
no load; measured on LIM_OUT pin
-
130 -
mV
RF/IF section (internal LO)
Vo(RSSI)
SINAD
RSSI output voltage
signal-to-noise-and-distortion
ratio
system; RF level = 10 dBm
system; RF level = 95 dBm
-
1.4 -
V
-
12
-
dB
13. Performance curves
9
ICC
(mA)
8
002aac998
7
6
5
−40
−15
10
35
60
85
Tamb (°C)
VCC = 5 V
Fig 3. Supply current versus ambient temperature
0.5
ICC(pd)
(mA)
0.4
002aac999
0.3
0.2
0.1
0
−40
−15
10
35
60
85
Tamb (°C)
Fig 4.
VCC = 5 V
Power-down mode supply current versus
ambient temperature
SA58641
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 9 March 2012
© NXP B.V. 2012. All rights reserved.
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