SANYO LB1409 Datasheet

Ordering number: EN683D

Monolithic Digital IC

LB1409

Level Meter Driver for 9 LEDs

Applications

.

AC level meters such as VU meters.

.

DC level meters such as signal meters.

Functions

.

Display
Nine red or green LEDs display the input level in the shape
of a bar.

.

Input amplifier
Wide application is available owing to built-in DC amplifier
whose gain is variable with external resistors.

.

Comparator level
Setting is made by steps of 3 dB as follows.
–18 dB, –15 dB, –12 dB, –9 dB, –6 dB, –3 dB, 0 dB,
+3 dB, +6 dB

.

Supply voltage
The recommended supply voltage range is so wide as 5.5 V
to 16 V.
(If pin Vref 2 is used, 7 V to 16 V.)

.

Reference voltage
Constant voltage output is available with external transistor
owing to pin Vref2=5V.

Package Dimensions

unit : mm

3064-DIP16

[LB1409]

SANYO : DIP16

Specifications

Comparator Level OUT Pin Voltage at Ta = 25°C, VCC=12V,Vref1=3V

Comparator level Pin No. min typ max Unit

D1 7 0.11 0.18* 0.25 V
D2 8 0.20 0.27* 0.34 V
D3 9 0.30 0.38* 0.46 V
D4 10 0.45 0.53* 0.61 V
D5 11 0.66 0.75 0.84 V
D6 12 0.97 1.06 1.15 V
D7 13 1.40 1.50 1.60 V
D8 14 2.02 2.12 2.22 V
D9 15 2.90 3.00 3.10 V

*: No overlap occurs in each individual IC.

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN

53096HA(II)/8237KI/8205MW/7140KI,TS No.683-1/4

LB1409

Absolute Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
Input voltage V
D1 to D9 output voltage V
D1 to D9 output current I
First reference flow-out current Iref (1) Pin 2 −1 to 0 mA
Second reference flow-out current Iref (2) Pin 16 −6 to 0 mA
V

supply voltage V

OUT

Allowable power dissipation Pd max Ta = 55°C 500 mW
Operating temperature Topr −10 to +60 °C
Storage temperature Tstg −40 to +125 °C

Allowable Operating Ranges at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Supply voltage V

Input voltage V
Output pin load resistance R

max Pin 1 −0.3 to +18 V

CC

IN

(D) D1 to D9 off −0.3 to +18 V

OUT

(D) Pin 7 to 15, D1 to D9 on +30 mA

OL

OUT

CC

+

or V

IN

IN

L

Pin 3, 4 −0.3 to V

Pin 5 −0.3 to +6 V

Pin 1,
( ): Using Vref 2

–

Pin 3 or Pin 4 –0.3 to +V

+5.5 to +16 V

(+7 to +16) V

Between pin 5 OUT and pin 6 GND. 15 k to 20 k Ω

CC

CC

V

V

Electrical Characteristics at Ta = 25°C, VCC=12V

Parameter Symbol Conditions min typ max Unit
Input bias current (Amplifier)
Input bias current (Comparator)

+ Output leakage current
Offset voltage (1) Voffset (1)

Offset voltage (2) Voffset (2)
First reference voltage Vref (1) Pin 2, Iref=0to1mA 2.6 3.0 V

Second reference voltage Vref (2) Pin 16, Iref=0to6mA 4.2 4.7 5.2 V
Current drain I
Amplifier gain VG Open loop 30 dB
Output flow-out current I

D pin output ON voltage V

D pin output leak current I

Output voltage (Amplifier) V

+

I

(A) Pin 3, V

IN

−

I

(A) Pin 4, V

IN

+

+

(C)

I

IN

IOL(A)

CC

OH

(D)

OL

(D)

OH

OH

+

=0V,V

IN

+

=3V,V

IN

+

–

=0V

IN

CC

IN

IN

IN

+

+

+

=0V,V

=6V,V

=V

=3V,V

=3V,V

Pin 5, V
GND=0V

Pin 5, V
GAIN=20dB

Pin 5, V
GAIN=20dB

Pin 1, V

Pin 5, V
Pin 7 to 15, D1 to D9, I

V

IN

–

IN

–

IN

–

IN

+

IN

–

=0V,GND=0V,

IN

–

IN

–

IN

Pin 7 to 15, D1 to D9, V
V

D1 to D9

Pin 5, VCC= 5.5 V, V
R

L

Pin 5, V
R

L

=15kΩ

CC

=15 kΩ

=12V

=12V,V

IN

IN

=3V,GND=0V –2 0 µA
=0V,GND=0V –2 0 µA
=3V,OUT=0V,

–

=V

=0V,GND=–6V,

IN

–10 0 µA

–180 +180 mV

0 +180 mV

= 0 V 10 20 mA

=0V,V

= 20 mA, V

OL

+

=0V,V

IN

+

=3V,V

+

=3V,V

= 0 V –10 mA

OUT

IN

IN

IN

–

=0V,

–

=0V,

+

IN

–

=3V,

=3V,

4V

9.5 V

1.2 V

10 µA

No.683-2/4