SL6654 Zarlink Semiconductor Inc, SL6654 Datasheet - Page 3

• Manufacturer Part Number: SL6654
• Description: LOWER POWER IF/AF CIRCUIT (WITH RSSI) FOR FM CELLULAR RADIO
• Manufacturer: Zarlink Semiconductor Inc

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
APPLICATIONS
QUICK REFERENCE DATA
LOWER POWER IF/AF CIRCUIT (WITH RSSI) FOR FM CELLULAR RADIO
Low Power Consumption (1.5mA)
Single Chip Solution
Guaranteed 100MHz Operation
Exceptionally Stable RSSI
Cellular Radio Telephones
Cordless Telephones
Supply Voltage 2.5V to 7 5V
Sensitivity 3 V
Co-Channel Rejection 7dB
The SL6654 is a complete single chip mixer/oscillator, IF
OSCILLATOR
MIXER
INPUT
3µV
SL6654 IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS
200mV
INPUT
RMS
RFC
1n
10n
270p
VCC
33p
18
1
7
10k
8µA
8µA
2k
1k
+15dB (ADJUSTABLE)
100MHz MAX
17
BIAS
8
C
OSCILLATOR
TRANSISTOR
+1.2V
33k
100n
1n
33k
MIXER
16
B
9
RESISTOR
LOAD
1.5k
X1
15
8p2
E
10µ
10
0V
SL6654
SL6652
50µA
8p2
CERAMIC
Fig. 2 block diagram
FILTER
20 - 40p
0V
6
220n
+90dB (LIGHTING)
14
220n
5
1.5MHz MAX
VCC
20k
13
DETECTOR
2
200k
(TO MATCH FILTER)
IF AMP
10p
220n
1.5k
Fig. 1 Pin connections (top view)
1µA
3
40k
12
RSSI
200k
39k
11
4
VCC
330p
10n
1k
270p
100n
OUTPUTS
RSSI
AUDIO
DS 3286 -1
MP18