7 DOT LED LEVEL METER DRIVER
S1A2288X01
1
INTRODUCTION
The S1A2288X01 is a monolithic integrated circuit consisting of
7-dot LED level meter drivers. The S1A2288X01 employs a low
noise comparator which lowers the noise in the LW, MW band
to 10 dB less than the previously mentioned LED drivers.
FEATURES
LED current can be set by an external resistor
Internal detection amplifier
Internal voltage regulator
Constant current output
Fitted with a signal detect output pin
VU meter scale
ORDERING INFORMATION
BLOCK DIAGRAM
Device
Package
Operating Temperature
S1A2288X01-D0B0
16
-
DlP
-
300A
20
C
-
+70
C
16
-
DlP
-
300A
16
15
14
13
12
11
D7
D6
D5
D4
D3
D2
D1
GND
1
2
3
4
5
6
7
8
9
10
I
R2
V
REG
OUT
IN(-)
V
CC
IN(+)
S
DET
CONSTANT CURRENT SOURCE
I
R1
LED DRIVER
V
REG
+
-
S1A2288X01
7 DOT LED LEVEL METER DRIVER
2
ABSOLUTE MAXIMUM RATINGS (Ta = 25
C)
ELECTRICAL CHARACTERISTICS
NOTE: Applied pin: 4, 5, 6, 7
Characteristic
Symbol
Value
Unit
Supply Voltage
V
CC
18
V
Amp Input Voltage
V
I
0
-
V
CC
V
D Terminal Output Current
I
D
30
mA
D Terminal Output Voltage
V
D
V
CC
V
Power Dissipation
P
D
(Ta
+70
C)
650
mW
Operating Temperature
T
OPR
-
20
-
+70
C
Storage Temperature
T
STG
-
40
-
+125
C
CharacterIstic
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Quiescent Circuit Current
I
CCQ
R
1
= 4.7k
, R
2
=
-
8
12
mA
Input Bias Current
I
BIAS
-
-
-
200
-
800
nA
Input Offset Voltage
V
IO
-
-
2
10
mV
Amp Gain
G
V
Open Loop
50
70
-
dB
Reference Voltage
V
REF
V
CC
= 6.2 ~ 16V, R
L
=10k
2.4
2.6
2.9
V
Signal Detection Output High Level
V
OH (DET)
R
L
= 10k
10
10.3
-
V
Output Current 1
I
O1
R
1
= 10k
, R
2
=
4.2
7.1
10.0
mA
Outut Current 2
I
O2
R
1
= 10k
, R
2
=22k
6.3
10.6
15.0
mA
Output Leakage Current
I
LEK
R
1
= 4.7k
, R
2
=
-
-
20
A
V
CL (ON) 1
V
CC
= 6.2V
-
16V
V
CL(ON)5
shall be taken
for 0dB.
-
22
-
20
-
18
V
CL (ON) 2
-
11
-
10
-
9
V
CL (ON) 3
-
6.5
-
6
-
5.5
Comparator on Level
V
CL (ON) 4
-
3.5
-
3
-
2.5
dB
V
CL (ON) 5
-
0
-
V
CL (ON) 6
+2.5
+3
+3.5
V
CL (ON) 7
+5
+6
+7
0dB Level
V
CL (ON) 5
V
CC
= 6.2V
-
16V,
V
REF
= 2.4
-
2.9V
1.2
1.3
1.45
V
PDF 
ZIP
