SA58640 NXP Semiconductors, SA58640 Datasheet - Page 6

• Manufacturer Part Number: SA58640
• Description: Low-voltage mixer FM IF system
• Manufacturer: NXP Semiconductors

Philips Semiconductors
11. Dynamic characteristics
Table 5:
[1]
9397 750 14161
Objective data sheet
Symbol
mixer/oscillator section (external LO = 220 mV
f
f
P
R
C
R
IF section
G
L
THD
S/N
Z
Z
Z
Z
V
RF/IF section (internal LO)
in
osc
G
G(conv)
i(IF)
o(IF)
i(lim)
o(lim)
O(lim)
i(RF)
i(RF)
o(mix)
a(IF)
The generator source impedance is 50
signal that enters the SA58640 input (pin 18) which is about 21 dB less than the ‘available power’ at the generator.
Dynamic characteristics
Parameter
input frequency
crystal oscillator
frequency
noise figure at
45 MHz
third-order input
intercept point (50 :
source)
conversion power
gain
RF input resistance
RF input capacitance
mixer output
resistance
IF amp gain
limiter gain
AM rejection
audio level
SINAD sensitivity
total harmonic
distortion
signal-to-noise ratio
IF RSSI output,
R9 = 2 k:
RSSI range
IF input impedance
IF output impedance
limiter input
impedance
limiter output
impedance
limiter output voltage
system SINAD
sensitivity
[1]
Conditions
f1 = 45.0; f2 = 45.06 MHz
Input RF level = 52 dBm
matched 14.5 dBV step-up
50 : source
single-ended input
(pin 20)
50 : source
50 : source
30 % AM 1 kHz
gain of two
IF level = 110 dBm
no modulation for noise
IF level = 110 dBm
IF level = 50 dBm
pin 18
pin 16
pin 14
pin 11
pin 11
RF level = 110 dBm
, but the SA58640 input impedance at pin 18 is 1500 . As a result, IF level refers to the actual
Rev. 01 — 1 November 2004
RMS
)
Min
-
-
-
-
10
-
-
-
1.25
-
-
-
60
-
-
-
-
-
-
1.3
-
1.3
-
-
-
Low-voltage mixer FM IF system
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Typ
100
100
7.0
10
17
2.5
8
3.0
1.5
44
58
50
120
17
55
60
0.5
1.7
60
1.5
0.3
1.5
0.3
130
12
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SA58640
Max
-
-
-
-
-
-
-
4.0
-
-
-
-
-
-
-
-
1.0
2.4
-
-
-
-
-
-
-
Unit
MHz
MHz
dB
dBm
dB
dB
k:
pF
k:
dB
dB
dB
mV
dB
dB
dB
V
V
dB
k:
k:
k:
k:
mV
dB
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RMS