Philips Semiconductors

Product specification

SA616

Low-voltage high performance mixer FM IF system

1997 Nov 07

3

BLOCK DIAGRAM

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

RSSI

IF

AMP

EB

VREG

OSCILLATOR

LIMITER

MIXER

QUAD

+–

+

–

AUDIO

SR00368

Figure 2. Block Diagram

DC ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

TEST CONDITIONS

LIMITS

UNITS

SYMBOL

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Power supply voltage range

2.7

7.0

V

DC current drain

3.5

5.0

mA

AC ELECTRICAL CHARACTERISTICS

and R18 = 3.3k

Ω; RF level = -45dBm; FM modulation = 1kHz with ±8kHz peak deviation. Audio output with de-emphasis filter and C-message

weighted filter. Test circuit Figure 3. The parameters listed below are tested using automatic test equipment to assure consistent electrical

characterristics. 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

TEST CONDITIONS

LIMITS

UNITS

SYMBOL

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Input signal frequency

150

MHz

Crystal oscillator frequency

150

MHz

Noise figure at 45MHz

6.8

dB

Third-order input intercept point (50

Ω

source)

f1 = 45.0; f2 = 45.06MHz

Input RF level = -52dBm

-9

dBm

Conversion power gain

Matched 14.5dBV step-up

11

17

dB

50

Ω source

+2.5

dB

RF input resistance

Single-ended input

8

k

Ω

RF input capacitance

3.0

4.0

pF

Mixer output resistance

(Pin 20)

1.25

1.5

k

Ω

IF section

IF amp gain

50

Ω source

44

dB

Limiter gain

50

Ω source

58

dB

Test at Pin 18

-105

dBm

AM rejection

80% AM 1kHz

40

dB

Audio level

Gain of two (2k

Ω AC load)

60

120

mV

SINAD sensitivity

IF level -110dBm

17

dB

THD

Total harmonic distortion

-30

-45

dB