SA58640 Datasheet, PDF (6/16 Pages) NXP Semiconductors – Low-voltage mixer FM IF system

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