SA605_15 Datasheet, PDF (8/25 Pages) NXP Semiconductors – High performance low power mixer FM IF system

NXP Semiconductors
SA605
High performance low power mixer FM IF system
Table 7. Dynamic characteristics …continued
T_amb = 25 C; V_CC = +6 V; unless specified otherwise. RF frequency = 45 MHz + 14.5 dBV RF input step-up.
IF frequency = 455 kHz; R17 = 5.1 k; RF level = 45 dBm; FM modulation = 1 kHz with 8 kHz peak deviation.
Audio output with C-message weighted filter and de-emphasis capacitor. Test circuit Figure 7. 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 improves many of the listed parameters.
Symbol Parameter
Conditions
Min Typ Max Unit
RF/IF section (internal LO)
unmuted audio level
RMS value; V_CC = 4.5 V;
RF level = 27 dBm
-
450 -
mV
V_o(RSSI) RSSI output voltage
system; V_CC = 4.5 V;
RF level = 27 dBm
-
4.3 -
V
[1] The generator source impedance is 50 , but the SA605 input impedance at pin 18 (IF_AMP_IN) is 1500 . As a result, IF level refers
to the actual signal that enters the SA605 input (pin 8, MUTED_AUD_OUTP) which is about 21 dB less than the ‘available power’ at the
generator.
SA605
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 14 November 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
8 of 25