器件名称: SA1088
功能描述: FM RECEIVER CIRCUIT FOR BATTERY SUPPLY
文件大小: 377.25KB 共7页
简 介:Silan Semiconductors
FM RECEIVER CIRCUIT FOR BATTERY SUPPLY
DESCRIPTION
The SA1088 is a bipolar integrated circuit for use in mono portable and pocket radios. It is used when a minimum of perpheral components (of small dimensions and low costs) is important. The circuit contains a frequency-locked-loop(FLL) system with an intermediate frequency(IF) of about 70kHz. Selectivity is achieved by active RC-filters. De-tuning related to the IF and too weak input signal is suppressed by the mute circuit.
SA1088
FEATURES
* Equipped with all stages of a mono receiver from antenna to audio output. * Mute Circuit * Search tuning with a single varicap diode * Mechanical tuning with integrating AFC * AM application supported * Power supply polarity protection * Power supply voltage down to 1.8V
SOP-16
APPLICATION
1. Mechanical tuning: This is possible with or without integrated AFC circuit 2. Electrical tuning: This is realized by one directional(band-up) search tuning facility, including RESET to the lower-band limit.
PIN CONFIGURATIONS
1 2 3 4 5 6 7 8 16 15 14
MUTE VOAF LOOP VP OSC IF FB CLP1 VOIF
TUNE CAP GND CLIM VIRF VIRF CLP2 VIIF
SA1088
13 12 11 10 9
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.0 2001-11-22
1
180pF 3.3nF 3.9nF 330pF 0.1F 470pF
RUN
22nF
BLOCK DIAGRAM
6 11
5k 70nH
7
8
9
10
13
15
3
82pF
V1 Mixer
All pass Filter
2.2k 2.2k
+1
6k 5.4k
IF Limter
Silan Semiconductors
10k
68pF
220pF
12
VP
5
Demodulator
78nH
V101
VCO
V2
SA……
