SA605_15 Datasheet, PDF(7/25 Page) NXP Semiconductors – High performance low power mixer FM IF system

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SA605_15 Datasheet, PDF (7/25 Pages) NXP Semiconductors – High performance low power mixer FM IF system

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NXP Semiconductors

SA605

High performance low power mixer FM IF system

10. Dynamic characteristics

Table 7. Dynamic characteristics

Tamb = 25 ï°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 kï; RF level = ï45 dBm; FM modulation = 1 kHz with ï±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

Mixer/oscillator section (external LO = 300 mV)

input frequency

fosc

oscillator frequency

noise figure

at 45 MHz

500 -

MHz

150 -

MHz

5.0 -

IP3i

Gp(conv)

input third-order intercept point

conversion power gain

FL1 = 45.0 MHz; FL2 = 45.06 MHz

matched 14.5 dBV step-up

50 ï source

ï10 -

dBm

ï1.7 -

Ri(RF)

Ci(RF)

Ro(mix)

IF section

RF input resistance

RF input capacitance

mixer output resistance

single-ended input

MIXER_OUT pin

3.0 4.7 -

kï

3.5 4.0 pF

1.25 1.5 -

kï

Gamp(IF)

Glim

Pi(IF)

IF amplifier gain

limiter gain

IF input power

50 ï source

for ï3 dB input limiting sensitivity;

R17 = 5.1 kï; test at IF_AMP_IN pin

39.7 -

62.5 -

ï113 -

dBm

ï¡AM

AM rejection

audio level

80 % AM 1 kHz

RMS value; R10 = 100 kï;

15 nF de-emphasis

150 260 mV

unmuted audio level

R11 = 100 kï; 150 pF de-emphasis

480 -

SINAD signal-to-noise-and-distortion ratio RF level ï118 dB

THD

total harmonic distortion

ï34 ï42 -

S/N

signal-to-noise ratio

no modulation for noise

Vo(RSSI) RSSI output voltage

IF; R9 = 100 kï

IF level = ï118 dBm

[1]

160 650 mV

IF level = ï68 dBm

1.9 2.5 3.1 V

IF level = ï18 dBm

4.0 4.8 5.6 V

ï¡RSSI(range) RSSI range

ïï¡RSSI

RSSI variation

Zi(IF)

IF input impedance

Zo(IF)

IF output impedance

Zi(lim)

limiter input impedance

output resistance

R9 = 100 kï; IF_AMP_OUT pin

unmuted audio

muted audio

ï±1.5 -

1.40 1.6 -

kï

0.85 1.0 -

kï

1.40 1.6 -

kï

SA605

Product data sheet

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

Rev. 5 â 14 November 2014

7 of 25

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