SANYO LC7265 Datasheet
Ordering number: EN 1197F
CMOS IC
LC7265
Received Frequency Display for Radio Receivers
Features
.
Displays received frequency of each band of FM, MW, LW
(LED static display).
.
Counts local oscillation frequency and displays received
frequency.
.
Number of display digits : FM-5 digits, MW-4 digits, LW-3
digits.
.
Covers intermediate frequencies shown below.
FM : +10.700, +10.725, +10.750, +10.675 MHz
–10.700, –10.725, –10.675, –10.650 MHz
MW, LW : +450 kHz : 10 kHz step display
+450 kHz : 1 kHz step display
+455 kHz : 1 kHz step display
.
Contains blanking circuit to turn off display.
.
Contains hold circuit to hold display contents.
.
Uses crystal resonator having 7.2 MHz reference frequency.
.
Uses LB3500 (÷8 prescaler) jointly at the time of FM
reception.
.
Supply voltage VDD:4.5Vto10V
+469 kHz : 1 kHz step display
Specifications
Package Dimensions
unit : mm
3025B-DIP42S
[LC7265]
SANYO : DIP42S
Absolute Maximum Ratings atTa=25°C, VSS=0V
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
Input voltage V
Output voltage V
Allowable power dissipation Pd max Ta % 65°C 550 mW
Allowable power dissipation of
segment outputs
Operating temperature Topr –30 to +65
Storage temperature Tstg –40 to +125
max –0.3 to +11 V
DD
IN
1X
O
V
2 Output pins other than VO1 0 to 15 V
O
Pd (seg)1 MHz, b&c, b&e, V
Pd (seg) 2 Other outputs, V
Pd (seg) 3 MHz, b&c, b&e, V
Pd (seg) 4 Other outputs, V
All input pins –0.3 to VDD+0.3 V
, HLD, 50 Hz, output: off –0.3 to VDD+0.3 V
OUT
IOL=33mA
I
= 16.5 mA
OL
IOL=36mA
I
=18mA
OL
= 4.5 to 6.5 V,
DD
= 4.5 to 6.5 V,
DD
= 6.0 to 10 V,
DD
= 6.0 to 10 V,
DD
30 mW
15 mW
25 mW
12 mW
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
63098HA(II)/6088YT/9105KI/3173KI/D162KI/7162KI/6242KI,TS No.1197-1/6
C
°
C
°
LC7265
Allowable Operating Ranges atTa=25°C, VDD= 4.5 to 10 V, VSS=0V
Parameter Symbol Conditions min typ max Unit
Supply voltage V
Input high-level voltage
Input low-level voltage
Input frequency
Input amplitude
Segment current
DD
V
1 A/F, BLK 0.7V
IH
V
2 FIF1, FIF2, FIF3, AIF1, AIF2 0.9V
IH
V
1 A/F, BLK 0 0.3V
IL
V
2 FIF1, FIF2, FIF3, AIF1, AIF2 0 0.1V
IL
f
IN
f
IN
f
IN
V
V
V
FMI, sine wave, capacitive coupling,
1
V
1 = 0.7Vp-p
IN
AMI, sine wave, capacitive coupling,
2
V
2 = 0.5Vp-p*
IN
3X
IN
FMI, sine wave, capacitive coupling,
1
IN
f
1=1to18MHz
IN
AMI, sine wave, capacitive coupling,
2
IN
f
2 = 0.5 to 3 MHz
IN
, sine wave, capacitive coupling,
X
IN
3
IN
f
3 = 0.2 to 7.5 MHz
IN
Iseg1 MHz, b&e, b&c
Iseg2 Other outputs 0 15 mA
4.5 10 V
DD
DD
V
V
DD
DD
DD
DD
V
V
V
V
1 18 MHz
0.5 3 MHz
0.2 7.5 MHz
0.7 0.9V
0.5* 0.9V
1.0 0.9V
DD
DD
DD
Vp-p
Vp-p
Vp-p
030mA
*: For fIN2 = 0.5 MHz to 0.9 MHz and VDD=8to10V,VIN2 min = 1.0 Vp-p applies.
Electrical Characteristics atTa=25°C, VDD= 4.5 to 10 V, VSS=0V
Parameter Symbol Conditions min typ max Unit
I
1 FIF1, FIF2, FIF3, AIF1, AIF2 VI=V
Input high-level current
Input low-level current
Input floating voltage V
Input/output high-level leakage
current
Output low-level voltage
IH
I
2 BLK VI=V
IH
1 FIF1, FIF2, FIF3, AIF1, AIF2 VI=V
I
IL
I
2 BLK VI=V
IL
I
3 A/F VI=V
IL
A/F VI= open 0.8V
IF
I
OFF
V
OL
V
OL
V
OL
V
OL
HLD, output off, VI=V
1 HLD, output on, IO=1mA 01V
b&e, b&c, MHz V
2
IOL=30mA
Segments other than above
3
V
DD
4 50 Hz, IO= 0.2 mA 0 1.0 V
Input high-level threshold voltage Vth HLD
Output off leakage current I
2 All segments output pins, VO= 13 V, output off 0 10 µA
OFF
FM mode, A/F = open or VDD,fIN1 = 18 MHz,
0.7Vp-p or (AM mode, A/F = VSS,fIN2=
3 MHz, 0.5Vp-p) fIN3 = 7.2 MHz, 1Vp-p
Current drain I
FIF1, FIF2, FIF3 = V
DD
AIF1, AIF2 = V
HLD, BLK = V
other pins open
DD
SS
SS
DD
= 4.5 to 10 V,
DD
= 4.5 to 10 V, IOL=15mA
DD
DD
DD
DD
SS
010µA
02µA
010µA
02µA
20 500 µA
DD
V
DD
V
02µA
0 0.7 V
0 0.7 V
0.4VDD0.5VDD0.7V
DD
V
018mA
Pin Assignment
Top view
No.1197-2/6
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