SANYO LB1412 Datasheet

Ordering number: EN1218C

Monolithic Digital IC

LB1412

Level Meter Driver for 12 LEDs

Functions and Features

.

Bar-shaped display of input level by means of 12 LEDs

.

High-order 5 dots with peak hold

.

Built-in oscillator for peak hold reset. Requires 1 pce. each
of external C, R. Uses either oscillator at the time of stereo
operation. Capable of also resetting manually.

.

Capable of constant-current driving low-order 7 dots (green
LED). Constant-current value variable with an external
resistor

.

Lower current drain available by connecting green LEDs in
series

.

Built-in input amplifier

.

Requires no other light-up level adjustment than adjustment
for 0 dB. D1 error: within ±3dBof20dB

.

Supply voltage range : 10 to 16 V

Package Dimensions

unit : mm

3010A-DIP22

[LB1412]

SANYO : DIP22

Specifications

Absolute Maximum Ratings at Ta = 25°C

Parameter Symbol Pin No. Conditions Ratings Unit
Maximum supply voltage V
Output current I
Allowable power dissipation Pd max Ta = 60°C 650 mW
Operating temperature Topr −30 to +75 °C
Storage temperature Tstg −40 to +125 °C

max 15 −0.3 to+18 V

CC

OL

1 to 5 D8 to D12, output on 30 mA

Allowable Operating Range at Ta = 25°C

Parameter Symbol Conditions Ratings Unit

Supply voltage V

CC

10 to 16 V

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

53096HA(II)/9097KI/8075MW/113KI(KOT) No.1218-1/5

LB1412

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

Parameter Symbols Pin No. Conditions min typ max Unit

Input bias current Amp (1) I
Output saturation

voltage

Amp (1) V

Amp (1) V
Voltage gain Amp (1) V
Input resistance Amp (2) R
Load resistance Amp (2) R
Output current Amp (2) I
Voltage gain Amp (2) V
Output current I

Output saturation voltage

Output leak current

D8 V

D1 G
D2 G
D3 G
D4 G

Comparator level

D5 G
D6 G
D7 G

D9 G
D10 G
D11 G
D12 G

Reference voltage V
R pin flow-out current I
R pin voltage V
Oscillation frequency f

Current drain I

BIN1
OH01

OL01

GA1

IN2

02

OL02

GA2

OL

V

sat

V

sat

l

off

l

off

THD8

D1
D2
D3
D4
D5
D6
D7

D9
D10
D11
D12

Z

OLR

R

OSC

CC

7 −3 −0.2 0 µA
8 Pins 8, 9 short 10.5 11.2 11.6 V
8 Pins 8, 9 short 1.0 1.5 2.0 V

9 8 12 16 kΩ
10 35 50 65 kΩ
10 3 6 12 mA

19,22 D1,D5:3kΩacross VZand I

17, 18,
19, 21,

D2 to D4, D6 to D7 : Output
Transistor on across V

22

1 to 5 D8 to D12 : I

19, 22 D1, D5 : output transistor off 0 30 µA

1 to 15 D8 to D12 : output transistor off 0 30 µA

D8 : Voltage to turn on D8 by

1

applying DC voltage across VZand
I

NZ

16 D8 light-up level:0dB −23 −20 −17 dB
17 D8 light-up level:0dB −17 −15 −13 dB
18 D8 light-up level:0dB −12 −10 −8 dB
19 D8 light-up level:0dB −8 −7 −6 dB
20 D8 light-up level:0dB −6 −5 −4 dB
21 D8 light-up level:0dB −4 −3 −2 dB
22 D8 light-up level:0dB −1.5 −1 −0.5 dB

2 D8 light-up level:0dB 0.5 1 1.5 dB

3 D8 light-up level:0dB 2 3 4 dB

4 D8 light-up level:0dB 4 5 6 dB

5 D8 light-up level:0dB 7 8 9 dB
12 3 kΩ across VZand I
11 VR= 0 V, OSC pin: open −0.6 −0.3 −0.1 mA
11 OSC pin: open 0.4 0.7 0.9 V
13 1 MΩ, 2.2 µF across VCCand V

3kΩacross V

15

outputs off

OLD1 to D5

and I

Z

30 100 dB

1.8 2.0 2.2 times
13 17 20 mA

1.0 1.3 V

Z

and I

LED

LED

= 30 mA 1.5 2.0 V

−0.625 −0.55 −0.465 V

LED

LED

Z

, all D

5.6 6.3 6.8 V

1.5 2 2.5 s

915mA

Allowable power dissipation, Pd max – mW

Pd max – Ta

Ambient temperature, Ta – °C

No.1218-2/5