SA615D 查看數據表（PDF） - NXP Semiconductors.

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SA615D

High performance low power mixer FM IF system

NXP Semiconductors. 

NXP Semiconductors

SA615

High performance low power mixer FM IF system

Table 7. Dynamic characteristics …continued

Tamb = 25 C; VCC = +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; VCC = 4.5 V;

RF level = 27 dBm

-

450 -

mV

Vo(RSSI) RSSI output voltage

system; VCC = 4.5 V;

RF level = 27 dBm

-

4.3 -

V

[1] The generator source impedance is 50 , but the SA615 input impedance at pin 18 (IF_AMP_IN) is 1500 . As a result, IF level refers

to the actual signal that enters the SA615 input (pin 8, MUTED_AUD_OUTP) which is about 21 dB less than the ‘available power’ at the

generator.

SA615

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 4 — 14 November 2014

© NXP Semiconductors N.V. 2014. All rights reserved.

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