Obsolescence Notice

This product is obsolete. This information is available for your convenience only. For more information on Zarlink’s obsolete products and replacement product lists, please visit http://products.zarlink.com/obsolete_products/

THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS

SL6652 IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS

DS 3285 -1

SL6652 LOWER POWER IF/AF CIRCUIT (WITH RSSI) FOR FM CELLULAR RADIO The SL6652 is a complete single chip mixer/oscillator, IF amplifier and detector for FM cellular radio, cordless telephones and low power radio applications. It features an exceptionally stable RSSI (Received Signal Strength Indicator) output using a unique system of detection. Supply current is less than 2mA from a supply voltage in the range 2.5V to 7.5V.

FEATURES Low Power Consumption (1.5mA) Single Chip Solution Guaranteed 100MHz Operation Exceptionally Stable RSSI

APPLICATIONS DP20 DG20 MP20

Cellular Radio Telephones Cordless Telephones

QUICK REFERENCE DATA Fig. 1 Pin connections (top view)

Supply Voltage 2.5V to 7 5V Sensitivity 3µV Co-Channel Rejection 7dB VCC

VCC 20 - 40p

1n

33p 33k

270p

VCC

10µ

39k

0V

X1

33k

220n

8p2

10p

8p2 18 OSCILLATOR INPUT 200mV RMS

C

17 B

16

15 50µA

6

5

1 DETECTOR

1n

7

40k

SL6652

270p

+90dB (LIGHTING) 1.5MHz MAX

MIXER

11 RSSI

IF AMP

20k

200k

1k

10k 10n

1k RSSI 10n

BIAS 8

AUDIO OUTPUTS

270p

8µA MIXER INPUT 3µV

100mV RMS (3kHz DEVIATION)

4

+15dB (ADJUSTABLE) 100MHz MAX 19 8µA 20

3 40k

0V

2k

2 1µA

E

OSCILLATOR TRANSISTOR

RFC

330p

200k 9

10

+1.2V

1.5k

100n

LOAD RESISTOR

14

13

12 220n

CERAMIC FILTER 220n

Fig. 2 block diagram

1.5k (TO MATCH FILTER)

100n

SL6652 ABSOLUTE MAXIMUM RATINGS Supply voltage Storage temperature Operating temperature Mixer input

8V -55°C to +150°C -55°C to +125°C 1V rms

ELECTRICAL CHARACTERISTICS Test conditions (unless otherwise stated): VCC = 2.5V to 7.5V, Tamb = -30°C to +85°C, IF = 455kHz, RF = 50MHz, Quad Coil Working Q = 30 Value Characteristics

Units Min.

Overall Supply current Sensitivity AM rejection Vbias Co-channel rejection Mixer RF input impedance OSC input impedance OSC input bias Mixer gain 3rd order input intercept OSC input level OSC frequency Oscillator Current sink Hfe fT IF Amplifier Gain Frequency Diff. input impedance Detector Audio output level Ultimate S/N ratio THD Output impedance Inter-output isolation RSSI Output (Tamb = +25°C) Output current Output current Current change Linear dynamic range

1.0

Typ.

Max.

1.5 5 3 40 1.2 7

2.0 10

1.4

1 2 5 15 -10 180 100

300

40 30

70

455

kohm kohm µA dB dBm mV MHz µA

500

MHz

90 1500 20

dB kHz kohm

75

125 60 0.5 40 65

50 0.9 70

mA µV µV dB V dB

1.22

5

20 80 1.5

Conditions

20dB SINAD 12dB SINAD RF input