7 DOT LED LEVEL METER DRIVER
S1A2288X01
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.
16−DlP−300A
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
Device
S1A2288X01-D0B0
Package
16−DlP−300A
Operating Temperature
20°C
−
+70°C
BLOCK DIAGRAM
I
R1
16
I
R2
15
V
REG
14
OUT
13
IN(-)
12
-
IN(+)
11
V
CC
10
S
DET
9
V
REG
+
LED DRIVER
CONSTANT CURRENT SOURCE
1
D7
2
D6
3
D5
4
D4
5
D3
6
D2
7
D1
8
GND
1
S1A2288X01
7 DOT LED LEVEL METER DRIVER
ABSOLUTE MAXIMUM RATINGS (Ta = 25°C)
Characteristic
Supply Voltage
Amp Input Voltage
D Terminal Output Current
D Terminal Output Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Symbol
V
CC
V
I
I
D
V
D
P
D
(Ta
≤
+70°C)
T
OPR
T
STG
Value
18
0
−
V
CC
30
V
CC
650
−20 −
+70
−40 −
+125
Unit
V
V
mA
V
mW
°C
°C
ELECTRICAL CHARACTERISTICS
CharacterIstic
Quiescent Circuit Current
Input Bias Current
Input Offset Voltage
Amp Gain
Reference Voltage
Signal Detection Output High Level
Output Current 1
Outut Current 2
Output Leakage Current
Symbol
I
CCQ
I
BIAS
V
IO
G
V
V
REF
V
OH (DET)
I
O1
I
O2
I
LEK
V
CL (ON) 1
V
CL (ON) 2
V
CL (ON) 3
Comparator on Level
V
CL (ON) 4
V
CL (ON) 5
V
CL (ON) 6
V
CL (ON) 7
0dB Level
V
CL (ON) 5
V
CC
= 6.2V
−
16V,
V
REF
= 2.4
−
2.9V
V
CC
= 6.2V
−
16V
V
CL(ON)5
shall be taken
for 0dB.
Open Loop
V
CC
= 6.2 ~ 16V, R
L
=10kΩ
R
L
= 10kΩ
R
1
= 10kΩ, R
2
=
∞
R
1
= 10kΩ, R
2
=22kΩ
R
1
= 4.7kΩ, R
2
=
∞
Test Conditions
R
1
= 4.7kΩ, R
2
=
∞
−
−
Min.
−
−
−
50
2.4
10
4.2
6.3
−
−22
−11
−6.5
−3.5
−
+2.5
+5
1.2
Typ.
8
−200
2
70
2.6
10.3
7.1
10.6
−
−20
−10
−6
−3
0
+3
+6
1.3
Max.
12
−800
10
−
2.9
−
10.0
15.0
20
−18
−9
−5.5
−2.5
−
+3.5
+7
1.45
V
dB
Unit
mA
nA
mV
dB
V
V
mA
mA
µA
NOTE:
Applied pin: 4, 5, 6, 7
2
7 DOT LED LEVEL METER DRIVER
S1A2288X01
TEST CIRCUIT
10µ
F
INPUT
18kΩ
R1
R2
90kΩ
VR
22K
3.3µ
F
Vcc
4.7µ
F
10kΩ
16
15
14
13
12
11
10
9
S1A2288X01
1
2
3
4
5
6
7
8
R
L
D6
D7
10µ
F
D4
D5
D1
D2
D3
3
S1A2288X01
7 DOT LED LEVEL METER DRIVER
NOTES
4
