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PDF LV25450PNW Data sheet ( Hoja de datos )
| Número de pieza | LV25450PNW | |
| Descripción | DSP Tuner Front End | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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www.DataSheet.co.kr
Ordering number : ENA1668
LV25450PNW
Bi-CMOS LSI
For Automotive Applications
DSP Tuner Front End
Overview
The LV25450PNW is a tuner front end IC that supports the Sanyo SDRS500 car radio DSP.
The LV25450PNW supports worldwide radio standards including the FM bands used in US, Europe, East-Europe, and
Japan as well as the LW, MW, SW, and FM weather bands. It adopts an image canceling mixer for the FM mixer and
incorporates a fast PLL locking function. The LV25450PNW also supports automatic alignment using CCB bus control. It
requires external EEPROM.
The LV25450PNW can implement a DSP tuner at low cost with a minimal number of external components.
Functions
• AM,/FM-FE, IF, and PLL circuits
• CCB is a registered trademark of SANYO Electric Co., Ltd.
• CCB is SANYO Semiconductor's original bus format. All bus addresses are managed by SANYO
Semiconductor for this format.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
31010 SY 20081121-S00006 No.A1668-1/40
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
LV25450PNW
AC Characteristics
Operating Characteristics at Ta = 25°C, VCC = 8.0V, VDD = 5.0V, unless otherwise specified. Ratings for publications
* : These measurements are made using the Yamaichi Electronics IC51-0644-807 IC socket. An IHF bandpass filter is
used as the audio filter.
FM Characteristics - FM Front End Mixer Input (No dummy)
Applied voltage CCB Command
Parameter
Symbol
Conditions
min typ max unit
DC Characteristics
Current drain-8V FM ICCO-8V FM
Current drain-5V FM ICCO-5V FM
Regulator bias 3V
Regulator bias 4V
FM antenna dump
output current
VREG3V
VREG4V
IANTD-F
AC Characteristics
Crystal oscillator
frequency
Crystal oscillator level
FXTAL
VXTAL
Crystal oscillator
buffer level
S-meter DC output
* : Adjust the
shifter-bits with a
50dBμV input so
that Vsm is set to
2.15V.
VXTAL OSC
OUT2
VSMFM-1
VSMFM-2
VSMFM-3
VSMFM-4
VSMFM-5
Total gain from mixer GMXDIV
to DIV IF amplifier
DIV IF amplifier gain GDIVIF
1dB compression
point driver IF
1DB POINT DIF
Narrow IF AGC grain GIFAGCNF1
(FM)
Narrow IF AGC grain GIFAGCNF2
(FM)
1dB complession
point FM-Narrow
1DB POINT NF
No input, FM mode
I3+I27+I355+I54+I55+I61
3
No input, FM mode
I16+I25+I41
3
The pin 26 voltage
3
The pin 15 voltage
3
The pin 64 output current
00
(Pin 64 load = 100Ω +Pin_Diode × 2
when 6.0V is applied to pin 2
D2-7, 6, 5 = [100]
3
D2-7, 6, 5 = [100] (reference value)
D32-08 = 0, D2-10, 9, 8 = [100]
D2-7, 6, 5 = [100] (reference value)
D32-08 = 0, D2-10, 9, 8 = [100]
3
3
10dBμV, the pin 34 DC output, no
3
modulation
30dBμV, the pin 34 DC output, no
modulation
3
50dBμV, the pin 34 DC output, no
3
modulation
70dBμV, the pin 34 DC output, no
3
modulation
90dBμV, the pin 34 DC output, no
modulation
3
FM_MIX_IN, DIV_OUT_IF (pin 32) 1.5
Ratio of the input to output signal
levels
98.1MHz mod = off, 70dBμV-Input
IF_N_IN1 (pin 46),
DIV_OUT_IF (pin 32)
3
Ratio of the input to output signal
levels
10.7MHz mod = off, 88dBμV-Input
IF_N_IN1 (pin 46),
3
DIV_OUT_IF (pin 32)
Ratio of the input to output signal
levels 10.7MHz mod = off
FM_ANALOG_IN (pin 46),
0
10.7OUTN (pin 30) Ratio of the input
to output signal levels
10.7MHz mod = off 100dBμV-Input
D32-27 to 25 = 011
FM_ANALOG_IN (pin 46),
3
10.7OUTN (pin 30) Ratio of the input
to output signal levels
10.7MHz mod = off 80dBμV-Input
D32-27 to 25 = 011
FM_ANALOG_IN (pin 46),
10.7OUTN (pin 30)
0
10.7MHz mod = off
D32-27 to 2] = 011
15 13 25 25 43.2
15 13 25 25 20.8
15 13 25 25
15 13 25 25
6 15 13 25 25
2.7
3.6
4.5
54 64.8 mA
26 31.2 mA
3 3.3 V
4 4.4 V
7.5 11 mA
15 13 25 25
4.5 MHz
15 13 25 25
15
15 13 25 25 115
165
mVrms
mVrms
15 13 25 25B 0.65 0.95 1.25 V
15 13 25 25B 0.95 1.25 1.55 V
15 13 25 25B 2.10 2.15 2.20 V
15 13 25 25B 3.1 3.4 3.7 V
15 13 25 25B 3.7
4 4.3 V
15 13 25 25
16
19
22 dB
15 13 25 25 4.5
7.5 10.5 dB
15 13 25 25 111 dB
15 13 25 25 -4.5 -2.5 -0.5 dB
15 13 25 25 23.5 25.5 27.5 dB
15 13 25 25 107
dBμV
Continued on next page.
No.A1668-5/40
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
Functions
AM/FM front-end AGC block
FM Image rejection Mixer (IQ-MIX)
FM IQ-MIX phase adjust (For the Japanese FM band)
Injection switching
AM Double balance Mixer
Pin diode drive AGC output (AM/FM)
Wide AGC sensitivity setting (AM/FM)
Narrow AGC sensitivity setting (AM/FM)
Keyed AGC adjust (FM)
AM RF AGC
Local oscillator
Local osc divider (FM/AM)
Local osc divider (AM)
ANT/RF DAC (FM)
AM 1st IF AMP block
1st-IF amplifier 10.7M
IF-Lim-Amp/S-meter block
S-meter shifter
IF Limiter Amplifier 6 stage
S-meter (DC for keyed AGC) (FM)
IF-AGC-Amp/IF-Amp for Diversity block
IF AGC Amplifier (control Voltage from DSP)
IF output Driver for DSP
IFAGC-Amp Gain Adjust.
IF-Amplifier for Diversity (Fixed Gain)
IF-Output Driver for DIV-IF
PLL
Fast lock PLL
Filter SW
Charge-Pomp switching
other
Tuner off
2.7V Regurator adjust
LV25450PNW
Gain switching : 1 bit
1 bit
4 bit DAC
4 bit DAC
4 bit DAC
4 bit DAC
133MHz to 262MHz
Division by 1, 2, or 3
Division by 20, 16, 12, or 8
9 bit DAC × 2
5 bit DAC
10.7MHz IF
10.7MHz IF
10.7MHz IF
1 bit SW
2 bit DAC
for East Band Receive
for FM-S-meter
No.A1668-11/40
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet LV25450PNW.PDF ] | |
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