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PDF LV25700PM Data sheet ( Hoja de datos )
| Número de pieza | LV25700PM | |
| Descripción | Single chip Tuner IC | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : ENA1709
Bi-CMOS IC
LV25700PM For Car Radio
Single chip Tuner IC
Overview
The LV25700PM is a tuner IC for car radio, which incorporates an AM/FM Tuner, PLL, AM/FM Noise Canceller (NC),
FM Stereo-decoder (MPX), Multipath-noise Rejection Circuit (MRC), and RDS Demodulator Logic-controller. The basic
performance is based on the LV25210, and both adjustment-free operation and software control of the IF band variable
filter are possible.
This IC enables easy configuration of a low-cost, high performance analog tuner for OEM.
Functions
• AM/FM + FE + PLL + IF + NC + MPX + MRC + RDS Demodulator + Logic-controller
Features
• World-wide compatible tuners
World-wide compatible tuners can be configured and supplied with a single tuner IC.
FM is compatible with U.S., European, Japanese and Weather bands, while AM is compatible with LW, MW and SW.
High performance image cancel mixer incorporated in FM MIX.
PLL fast locking, RDS demodulator and AM/FM noise canceller incorporated
• Self-contained type IF band variable filter incorporated
Detects any neighboring interfering FM stations and the modulation index, and enables various bandwidth settings of the
IF bandpass filter by using the software incorporated in the IC.
Continued on next page.
• 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.
60910 SY PC 20100415-S00002 No.A1709-1/68
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
LV25700PM
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 IC51-0804-819-2 IC socket. An IHF bandpass filter
is used as the audio filter.
[FM Characteristics] FM Front End Mixer Input
Parameter
Current drain-8V
Current drain-5V
Demodulation output
Detection output
Channel balance
Total harmonic distortion
Total harmonic distortion
Signal to noise ratio (MONO)
Signal to noise ratio (ST)
AM suppression ratio
Muting attenuation (1)
Muting attenuation (2)
Muting attenuation (3)
Separation
Stereo ON level
Stereo OFF level
Main distortion factor
SNC output attenuation
HCC output attenuation
Input limiting voltage
Muting sensitivity
SD sensitivity
IF count sensitivity
Symbol
ICCOF-8V
ICCOF-5V
VO-FM_1
VO-FM_2
CB
THD-Fm mono (1)
THD-Fm mono (2)
S/N-FM-MONO
S/N-FM-ST
AMR
Att-1
Att-2
Att-3
Separation
ST-ON
ST-OFF
THD-Main L
AttSNC
FM HCC
Vi-lim
Vi-mute
SD-senFM
IF-count-sens. FM
Conditions
No input, FM mode
I1+I2+I15+I68+I80
No input, FM mode
I35+I53+I74
98.1MHz, 60dBμV, 1kHz,
100%mod, pin 49
98.1MHz, 60dBμV, 1kHz,
100%mod, pin 60
98.1MHz, 60dBμV, 1kHz, pins 49 and 50
98.1MHz, 60dBμV, 1kHz,
100%mod, pin 49
98.1MHz, 60dBμV, 1kHz,
150%mod, pin 49
98.1MHz, 60dBμV, 1kHz,
100%mod, pin 49
98.1MHz, 60dBμV, 1kHz,
100%mod, pin 49, L+R = 90%, pilot = 10%
98.1MHz, 60dBμV, 1kHz, 100%mod,
30% in AM mode, fm = 400Hz, pin 49
98.1MHz, 60dBμV, 1kHz,
with V64 = 0→2V, pin 49 attenuation
(Mute ATT SW = 0)
98.1MHz, 60dBμV, 1kHz,
with V64 = 0→2V, pin 49 attenuation
(Mute ATT SW = 2)
98.1MHz, 60dBμV, 1kHz,
with V64 = 0→1V, pin 49 attenuation
(Mute ATT SW = 2)
98.1MHz, 60dBμV, mod = 100%,
pilot = 10%, pin 49 output ratio
Separation control adj
Pilot demodulation at which V27 < 0.5V is
established
Pilot demodulation at which V27 < 3.0V is
established
98.1MHz, 60dBμV, L+R = 90%,
pilot = 10%, pin 49
98.1MHz, 40dBμV, L-R = 90%,
pilot = 10%, pin 49 (L→R)
98.1MHz, 60dBμV, 10kHz,
modulation = 30% reference, input level at
which the output is down by -3dB
98.1MHz, 60dBμV, 30%mod, MIX input at
which the input reference output is down
by -3dB, V42 = 0V, V29 = 0V,
with MUTE = OFF
MIX input level at V64 = 0.7V, non-mod
MIX input level at which SD pin is ON, shifter-
adj, non-mod
IF count sensitivity at MIX input, non-mod
min
60
37
400
280
-1
60
58
58
-30
-23
-11
27
1.5
1.2
5
24
-6
0.1
20
typ
73
max
85
Unit
mA
45 52 mA
550 700 mVrms
380 480 mVrms
0 1 dB
0.2 1 %
0.3 2.5 %
70 dB
65 dB
67 dB
-25 -20 dB
-18 -13 dB
-6 -1 dB
43 dB
3.8 5.5 %
3.2 %
0.5 1.2 %
10 15 dB
30 36 dBμV
-1 4 dBμV
5 9.9 dBμV
25 30 dBμV
20 dBμV
Continued on next page.
No.A1709-5/68
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
Pin Discription
Pin name
Function
1 MIXER OUT1
80 MIXER OUT1
LV25700PM
Discription
FM/AM MIX OUT (common)
Internal Equivalent Circuit
1 80
2 RF VCC
3 AM MIXER input 1 AM MIX IN
4 AM MIXER input 2 Input impedance = 10kΩ
RF_GND(PIN12)
VCC = 8V
RF_VCC(PIN2)
2.5kΩ
4
10kΩ
10kΩ
12kΩ
3
110Ω 110Ω
5 AM RF AGC
6 AM ANT ATT
RF AGC rectifier capacitor
Determination of distortion ratio during
low-frequency modulation
Increase C5;
Distortion → improved
Response → slow
Decrease C5;
Distortion → worse
Response → quick
For pin diode drive
I6 = 8mA
ANT damping current
RF_GND(PIN2)
RF_VCC(PIN2)
AGC_DEC
1kΩ
1kΩ
1kΩ
1kΩ
IF_GND(PIN72)
5
RF_VCC(PIN2)
IF_GND(PIN72)
1kΩ
6
200Ω
1kΩ
IF_GND(PIN72)
Continued on next page.
No.A1709-11/68
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
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