SA639 データシートの表示（PDF） - Philips Electronics

部品番号

コンポーネント説明

メーカー

SA639

Low voltage mixer FM IF system with filter amplifier and data switch

Philips Electronics 

Philips Semiconductors

Low voltage mixer FM IF system with filter amplifier

and data switch

Product specification

SA639

AC ELECTRICAL CHARACTERISTICS

TA = 25°C; VCC = +3V, unless otherwise stated. RF frequency = 110.592MHz ;LO frequency = 120.392MHz; IF frequency = 9.8MHz; RF level

= -45dBm; FM modulation = 576kHz with ±288kHz peak deviation, discriminator tank circuit Q=4. 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.

LIMITS

SYMBOL

PARAMETER

TEST CONDITIONS

SA639

UNITS

MIN

-3σ

TYP

+3σ

MAX

Mixer/Osc section (ext LO = -14dBm)

fIN

fOSC

Input signal frequency

External oscillator (buffer)

Noise figure at 110MHz

500

0.2

500

10.4

11

11.6

MHz

MHz

dB

Third-order input intercept point

Matched f1=110.592MHz;

f2=110.852MHz

-11

-9.5

-8

dBm

Conversion power gain

6

8.6

9.2

11.1

dB

RF input resistance

Single-ended input

800

Ω

RF input capacitance

3.5

pF

Mixer output resistance

(Pin 24)

330

Ω

IF section

IF amp gain

38.86

40

41.14

dB

Limiter gain

50.44

52

53.56

dB

Input limiting -3dB

Test at Pin 22

–100

dBm

IF input impedance

330

Ω

IF output impedance

330

Ω

Limiter input impedance

330

Ω

Limiter output impedance

300

Ω

Limiter output level with no

load

130

mVRMS

RF/IF section (ext LO = -14dBm)

Data level

Data bandwidth

RL = 10kΩ, CL = 30pF

260

360

2.1

2.4

2.7

mVP-P

MHz

S/N Signal-to-noise ratio

No modulation for noise

56.1

60

63.9

dB

AM rejection

80% AM 1kHz

34.8

36

37.2

dB

RF level = -90dBm

0

0.232

0.4

0.568 0.75

RF RSSI output with buffer

RF level = -45dBm

0.5

0.732

0.9

1.068

1.3

V

RF level = -10dBm

0.8

1.032

1.2

1.368

1.6

RF RSSI output rise time

IF frequency = 9.8MHz

(10kHz pulse, w/ 9.8MHz filter)

(no RSSI bypass capacitor)

RF level = -45dBm

RF level = -28dBm

0.8

0.8

µs

RF RSSI output fall time

IF frequency = 9.8MHz

(10kHz pulse, w/ 9.8MHz filter)

(no RSSI bypass capacitor)

RF level = -45dBm

RF level = -28dBm

2.0

1.8

µs

RSSI range

80

dB

RSSI accuracy

±1.5

dB

SINAD

RF level = -85dBm

9.45

12

14.55

dB

S/N

RF level = -100dBm

5.8

10

14.2

dB

1998 Feb 10

4

Share Link: