LB1409 Datasheet, PDF (1/4 Pages) Sanyo Semicon Device – Level Meter Driver for 9 LEDs

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 Vref 2 = 5 V.
Package Dimensions
unit : mm
3064-DIP16
[LB1409]
SANYO : DIP16
Specifications
Comparator Level OUT Pin Voltage at Ta = 25°C, V_CC = 12 V, Vref 1 = 3 V
Comparator level
D1
D2
D3
D4
D5
D6
D7
D8
D9
*: No overlap occurs in each individual IC.
Pin No.
7
8
9
10
11
12
13
14
15
min
typ
max
Unit
0.11
0.18*
0.25
V
0.20
0.27*
0.34
V
0.30
0.38*
0.46
V
0.45
0.53*
0.61
V
0.66
0.75
0.84
V
0.97
1.06
1.15
V
1.40
1.50
1.60
V
2.02
2.12
2.22
V
2.90
3.00
3.10
V
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