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Details, datasheet, quote on part number:UPC2533GS-01
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Datasheet text preview:
DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µPC2533
AM TUNER FOR ELECTRONIC TUNING CAR RADIOS
The µPC2533 is an IC developed as an AM tuner for car stereos and car radios. It employs an up-conversion type double super-heterodyne configuration (IF1 = 10.71 MHz, IF2 = 450 kHz). The internal configuration consists of the MIX1 block (MIX1, OSC1, Buff1), MIX2 block (MIX2, OSC2, Buff2), IF amplifier, detection circuit, AGC circuit, signal meter circuit, SD (station detector) circuit, and Lo/DX (short range/long range) circuit.
Features
· Possible to select stations using only one varactor diode with narrow variable capacitance range · Tracking adjustment unnecessary · Coil switching between LW (long wave) and MW (middle wave) unnecessary · Less sensitivity deviation due to tracking error · High S/N: 60 dB · Signal meter output with good linearity · Signal meter output voltage inclination setting possible by external resistor. · Can be used with IF (intermediate frequency) counter turning system or high/low tuning system.
SD Sensitivity Setting Type Number IF Counter Output Set by pin No. 7 High/Low Output Set by pin No. 9 Signal Meter Voltage Inclination Setting Depends on SD sensitivity setting
Remarks SD sensitivity of IF counter system and high/low system can be set independently. Tilt of the signal meter voltage can be set without regard to SD sensitivity.
µP C 2 5 3 3 G S - 0 1
µP C 2 5 3 3 G S - 0 2
Set by pin No. 7
Set by pin No. 9
· LO/DX function on-chip · Since IFT (intermediate frequency transformer) turn ratio is free from limitation for matching of ceramic filter impedance, it is easy to design MIX gain with IFT.
The information in this document is subject to change without notice. Document No. S11989EJ4V0DS00 (4th edition) Date Published August 1998 N CP(K) Printed in Japan
The mark
shows major revised points.
©
1993
µPC2533
Ordering Information
Part Number Package 36-pin plastic shrink SOP (300 mil) 36-pin plastic shrink SOP (300 mil)
µP C 2 5 3 3 G S - 0 1 µP C 2 5 3 3 G S - 0 2
Block Diagram
RF AGC T.C. IF AGC T.C.
20 IF AGC 17
Buff1OUT
Buff2OUT
MIX1OUT
MIX1OUT
MIX2OUT
MIX2OUT
MIX1BYP
MIX2BYP
RF AGC1
RF AGC2
Buff1IN
Buff2IN
MIX1IN
MIX2IN
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
19
RF AGC driver
MIX 1
Buff 1
MIX 2
Buff 2
RF AGC detector
MIX 2 AGC
IF amplifier
AGC comparator LO/DX
Time constant selector switch Signal meter
OSC Buff 1
OSC 1
SEEK 4 5 6 7
Station detector 8 9 10 11
OSC 2
Detector
2
3
12
13
14
15
16
18
SD ACadj [SDadj]
SD DCadj [SMOUT]
OSC1 Buff
MIX2AGC T.C.
SD ACOUT
SD DCOUT
OSC2 (B)
OSC2 (E)
SD IFIN
VO (AF)
GND
Remarks 1. Bold lines indicate flow of audio signal. 2. µPC2533GS-02 pin names are in parentheses. Pins not in parentheses are used in both the
µPC2533GS-01 and µPC2533GS-02.
2
IF2OUT
ALC
Vref1
LO/DX
SEEK
Vref2
VCC
IF2IN
GND
µPC2533
Pin Configuration (Top View)
36-pin plastic shrink SOP (300 mil) · µP C 2 5 3 3 G S - 0 1 · µP C 2 5 3 3 G S - 0 2
OSC1 Buff ALC Vref 1 LO/DX SEEK SD ACOUT SD ACadj [SDadj] SD IFIN SD DCadj [SMOUT] SD DCOUT OSC2 (B) OSC2 (E) Vref 2 MIX2AGC T.C.
1 2 3 4 5 6 7 8 9 10 11 12 13 14
36 RF AGC1 35 RF AGC2 34 RF AGC T.C. 33 MIX1IN 32 MIX1OUT 31 MIX1OUT 30 MIX1BYP 29 Buff1IN 28 GND 27 Buff1OUT 26 MIX2BYP 25 MIX2OUT 24 MIX2OUT 23 MIX2IN 22 Buff2IN 21 Buff2OUT 20 IF AGC T.C. 19 IF2IN
VO (AF) 15 GND 16
VCC 17 IF2OUT 18
Remark µPC2533GS-02 pin names are in parentheses.
Pins not in parentheses are used in both the
µPC2533GS-01 and µPC2533GS-02.
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