SA616 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 5 — 24 July 2012 7 of 31
NXP Semiconductors
SA616
Low-voltage high performance mixer FM IF system
11. Dynamic characteristics
Table 6. Dynamic characteristics
T
amb
=25
C; V
CC
= 3 V; unless specified otherwise. RF frequency = 45 MHz + 14.5 dBV RF input step-up.
IF frequency = 455 kHz; R17 = 2.4 k
and R18 = 3.3 k
. RF level =
45 dBm; FM modulation = 1 kHz with
8 kHz peak
deviation. Audio output with de-emphasis filter and C-message weighted filter. Test circuit Figure 21. The parameters listed
below 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
Mixer/oscillator section (external LO = 220 mV RMS value)
f
i
input frequency - 150 - MHz
f
osc
oscillator frequency - 150 - MHz
NF noise figure at 45 MHz - 6.8 - dB
IP3
I
input third-order intercept point 50 source;
f1=45.0MHz;f2=45.06MHz;
input RF level = 52 dBm
- 9- dB
G
p(conv)
conversion power gain matched 14.5 dBV step-up 11 17 - dB
50 source - 2.5 - dB
R
i(RF)
RF input resistance single-ended input - 8 - k
C
i(RF)
RF input capacitance - 3.0 4.0 pF
R
o(mix)
mixer output resistance MIXER_OUT pin 1.25 1.5 - k
IF section
G
amp(IF)
IF amplifier gain 50 source - 44 - dB
G
lim
limiter gain 50 source - 58 - dB
P
i(IF)
IF input power for 3 dB input limiting sensitivity;
R17=2.4k; R18=3.3k
(Figure 21); test at IF_AMP_IN pin
- 105 - dBm
AM
AM rejection 80 % AM 1 kHz - 40 - dB
V
o(aud)
audio output voltage gain of two (2 k AC load) 60 120 - mV
SINAD signal-to-noise-and-distortion ratio IF level 110 dBm - 17 - dB
THD total harmonic distortion 30 45 - dB
S/N signal-to-noise ratio no modulation for noise - 62 - dB
V
o(RSSI)
RSSI output voltage RF; R9 = 2 k
RF level = 118 dBm - 0.3 0.8 V
RF level = 68 dBm 0.7 1.1 2 V
RF level = 23 dBm 1.0 1.8 2.5 V
RSSI(range)
RSSI range - 80 - dB
RSSI
RSSI variation - 2- dB
Z
i(IF)
IF input impedance IF_AMP_IN pin 1.3 1.5 - k
Z
o(IF)
IF output impedance IF_AMP_OUT pin - 0.3 - k
Z
i(lim)
limiter input impedance LIMITER_IN pin 1.3 1.5 - k
Z
o(lim)
limiter output impedance LIMITER_OUT pin - 0.3 - k
V
o(RMS)
RMS output voltage LIMITER_OUT pin - 130 - mV
