The LV25450PNW is a tuner front end IC that supports Our 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 ON Semiconductor® ’s original format. All addresses are managed
by ON Semiconductor® for this format.
CCB is a registered trademark of Semiconductor Components Industries, LLC.
Semiconductor Components Industries, LLC, 2013
May, 2013
31010 SY 20081121-S00006 No.A1668-1/40
LV25450PNW
Specifications
Maximum Ratings
at Ta = 25C
Parameter
Maximum supply voltage
Symbol
VCC 8V
VCC 5V
CCB bus maximum input voltage
CCB bus maximum output
voltage
Allowable power dissipation
Operating temperature
Storage temperature
Pd max
Topr
Tstg
Ta
85C *
850
-40 to +85
-50 to +150
mW
C
C
VIN max
VO
Conditions
OSC_VCC (3), IFAGC_VCC (27),
IFAGCOUT-Drive_VCC (35), FE_VCC (61)
XTAL_VCC (16), Digital_VCC (25),
Analog_VCC (41)
Pin 21, 22, 23
Pin 24
Ratings
9.0
6.0
-0.3 to +5.0
-0.3 to +6.5
Unit
V
V
V
V
* : Using the circuit board for Our tuner module (specified board : 55mm
39mm
1.3mm, glass epoxy)
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Recommended Operating Conditions
at Ta = 25C
Parameter
Recommended supply voltage
Symbol
VCC 8V
VCC 5V
Operating supply voltage range
VCC 8Vop
VCC 5Vop
CCB bus high-level input voltage
CCB bus low-level input voltage
CCB bus high-level input current
CCB bus low-level input current
DO low-level output voltage
DO high-level output voltage
VIH
VIL
IIH
IIL
VOL
VOH
Connected to an LC75045.
CE, DI, CL
CE, DI, CL
CE, DI, CL ; VI5.5V
CE, DI, CL ; VI0V
Conditions
OSC_VCC (3), IFAGC_VCC (27),
IFAGCOUT-Drive_VCC (35), FE_VCC (61)
XTAL_VCC (16), Digital_VCC (25),
Analog_VCC (41)
Ratings
8.0
5
7.5 to 8.5
4.5 to 5.5
2.5 to 5.0
0 to 0.8
10 or less
10 or less
0.38 or less
2.1 or more
Unit
V
V
V
V
V
V
A
A
V
V
Reception Frequencies
Parameter
FM reception frequencies
FM weather band reception
frequencies
AM reception frequencies
fAMLW
fAMMW
fAMSW
LW
MW
SW
144 to 288
520 to 1710
2.94 to 22.0
kHz
kHz
MHz
Symbol
fFM
fFM-WB
Conditions
JPN, US, EU, E-EU
Frequency ratings
65 to 108.1
162.4 to 162.55
Unit
MHz
MHz
No.A1668-2/40
LV25450PNW
Power on/Power off Timing and the Power on Reset
Recommended Operating Ratings
at Ta = 25°C, GND = 0V
Parameter
Operating supply voltage
Symbol
Vcop H
Vcop L
Internal logic voltage
VREG3
VREG4
Power application time
(8.0 V
5.0 V)
Internal register retention voltage
T7
Vhmin3
Vhmin4
Internal register reset voltage
Internal register reset power
supply rise time
Power application time
(5.0 V
8.0 V)
T14
10
100
ms
Voff
tPOR
Pin 26 : Design reference value
Pin 15 : Design reference value
Pin 16, 25, 41 : Design reference value
Pin 16, 25, 41 : Design reference value
Conditions
Pin 3, 27, 35, 54, 55, 61
Pin 16, 25, 41
Pin 26
Pin 15
Ratings
min
7.5
4.5
2.7
3.7
10
VREG3
VREG4
0
0.05
typ
max
8.5
5.5
3.3
4.3
100
2.2
2.2
0.2
3
Unit
V
V
V
V
ms
V
V
V
ms
Power-on Sequence and Power-on Reset
(1) Power on image and power on reset
Recommended Operating Ratings
at Ta = 25°C, GND = 0V
Parameter
Operating supply voltage
Symbol
Vcop H
Vcop L
Internal logic voltage
VREG3
VREG4
Internal register retention voltage
Vhmin3
Vhmin4
Internal register reset voltage
Internal register reset power
supply rise time
Note 1 : When reading out data from pin D0 connection (e.g., E2PROM) with the voltage at the pin 23 below 2.2V, be sure to read the data after transmitting
the control data and pin D0 being set “open” because the state of internal register cannot be specified.
Note 2 : It is necessary to set data when power is first applied or there is a momentary power interruption.
Voff
tPOR
Conditions
Pins 3, 27, 35, and 61
Pins16, 25, and 41
Pin 26
Pin 15
Pin 26 : Design reference value
Pin 15 : Design reference value
Pins 16, 25, and 41 : Design reference value
Pins 16, 25, and 41 : Design reference value
Ratings
min
7.5
4.5
2.7
3.7
2.2
2.2
0
0.05
typ
max
8.5
5.5
3.3
4.3
VREG3
VREG4
0.2
3
Unit
V
V
V
V
V
V
V
ms
VCC_8Vop
VCC_5Vop
VREG4
VREG3
Vhmin3
Vhmin4
Voff
tPOR
Image of Supply Voltage
No.A1668-3/40
LV25450PNW
(2) Power on/off sequence
The power on and power off sequences for the IC must follow the order shown below.
Power on sequence
8V system power
5V system power
Period when power is
applied to each pin
tPUP85
Power off sequence
8V system power
tPDN58
5V system power
Parameter
Power on period (8V
5V)
Power off period (5V
8V)
Symbol
tPUP85
tPDN58
Conditions
Ratings
min
0
0
typ
max
100
100
Unit
ms
ms
Never apply power to the IC until all the supply voltages reach the predetermined values.
For pin D0, refer to the above section (1), Note 1, and Note 2.
Regarding voltage applied to each power pin, 8V system must always be higher than 5V system (8V system
5V).
As long as this relationship is maintained and the power supply rise/fall time is within 100ms, there is no problem if the low voltage side power is started up first.
No.A1668-4/40
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
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