1
Standaed ICs
Dual high slew rate, low noise
operational amplifier
BA15218 / BA15218F / BA15218N
The BA15218, BA15218F, and BA15218N are monolithic ICs with two built-in low-noise, low-distortion operational
amplifiers featuring internal phase compensation.
Either a dual or single power supply can be driven, and these products can be driven by a digital system 5V single
power supply.
The following packages are available: 8-pin DIP (BA15218), 8-pin SOP (BA15218F), and 8-pin SIP (BA15218N).
1) Low-voltage operation and single power supply drive
enabled.
(Single power supply: 4 to 32V, dual power supply:
3 to 16V)
2) Low noise level. (Vn = 1.0
V
rms
typ. : RIAA)
3) High slew rate. (SR = 3V /
s, GBW = 10MHz typ.)
4) Low offset voltage. (V
IO
= 0.5mV typ.)
5) High gain and low distortion. (G
VO
= 110dB, THD =
0.0015%)
6) Pin connections are the same as with standard dual
operational amplifiers, and outstanding characteris-
tics make these products compatible with the 4558
and 4560 models.
Block diagram
+
+
1
2
3
4
8
7
6
5
OUT1
IN1
+ IN1
V
EE
V
CC
OUT2
IN2
+ IN2
1ch
2ch
+
+
1
OUT1
2
IN1
3
+ IN1
4
V
EE
5
+ IN2
6
IN2
7
OUT2
8
V
CC
2ch
1ch
BA15218 / BA15218F
BA15218N
Features
2
Standaed ICs
BA15218 / BA15218F / BA15218N
Internal circuit configuration
V
CC
V
EE
Q
3
R
2
R
3
R
4
Q
4
D
1
C
2
Q
6
Q
7
Q
10
Q
9
C
1
R
1
Q
5
Q
8
Q
11
Q
13
R
6
R
7
Q
12
Q
1
IN
+ IN
Q
2
R
5
Q
14
Q
15
Q
16
OTHER
CH
Q
17
R
8
Q
19
Q
18
R
9
OUT
Absolute maximum ratings (Ta = 25C)
Parameter
Symbol
Limits
Unit
BA15218
BA15218F
BA15218N
Power supply voltage
Power dissipation
Differential input voltage
Common-mode input voltage
Operating temperature
Storage temperature
V
CC
18
18
18
V
800
550
900
mW
V
ID
V
CC
V
V
I
V
CC
~ V
CC
V
Load current
I
OMAX
50
50
50
mA
Topr
40
~ + 85
40
~ + 85
40
~ + 85
C
Tstg
55
~ + 125
55
~ + 125
55
~ + 125
C
Pd
V
CC
V
CC
~ V
CC
V
CC
V
CC
~ V
CC
Refer to Pd characteristics diagram.
The values for the BA15218F are those when it is mounted on a glass epoxy board (50mm
50mm
1.6mm).
3
Standaed ICs
BA15218 / BA15218F / BA15218N
Electrical characteristics (unless otherwise noted, Ta = 25C, V
CC
= +15V, V
EE
= -15V)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Conditions
Input offset voltage
Input offset current
Input bias current
High-amplitude voltage gain
Common-mode input voltage
Maximum output voltage
Maximum output voltage
Common-mode rejection ratio
Power supply voltage rejection ratio
Quiescent current
Slew rate
Channel separation
Voltage gain band width
Input conversion noise voltage
V
IO
--
0.5
5
mV
R
S
10k
I
IO
--
5
200
nA
--
I
B
--
50
500
nA
--
A
V
86
110
--
dB
V
ICM
12
14
--
V
--
V
OH
12
14
--
V
R
L
10k
V
OL
10
13
--
V
R
L
2k
CMRR
70
90
--
dB
R
S
10k
PSRR
76
90
--
dB
R
S
10k
I
Q
--
5
8
mA
S.R.
--
3
--
CS
--
120
--
dB
f = 1kHz input conversion
GBW
--
10
--
MHz
f = 10kHz
V
n
--
1.0
--
V
rms
V /
s
R
L
2k
, V
O
=
10V
V
IN
= 0V, R
L
=
A
V
= 1, R
L
= 2k
RIAA, R
S
= 1k
, 10Hz ~ 30kHz
Electrical characteristic curves
POWER DISSIPATION: Pd (mW)
AMBIENT TEMPERATURE: Ta (
C)
1200
1000
800
600
400
200
0
0
25
50
75
100
125
150
BA15218F
BA15218
BA15218N
Fig.1 Power dissipation vs. ambient
temperature
85
QUIESCENT CURRENT: I
Q
(mA)
POWER SUPPLY VOLTAGE: V
(V)
6
8
4
2
0
0
10
20
Fig.2 Quiescent current vs. power
supply voltage
OPEN LOOP VOLTAGE GAIN: A
v
(dB)
FREQUENCY: f (Hz)
140
20
40
60
80
100
120
0
1
10
100
1k
10k
100k
1M
10M
Fig.3 Open loop voltage gain vs.
frequency
4
Standaed ICs
BA15218 / BA15218F / BA15218N
MAXIMUM OUTPUT VOLTAGE: V
OM
(V)
FREQUENCY: f (Hz)
32
4
8
12
16
20
24
28
0
100
1k
10k
100k
1M
Fig.4 Maximum output voltage vs.
frequency
INPUT BIAS CURRENT: I
B
(nA)
AMBIENT TEMPERATURE: Ta (
C)
20
40
60
80
20
0
20
40
60
80
Fig.5 Input bias current vs.
ambient temperature
INPUT BIAS CURRENT: I
B
(nA)
POWER SUPPLY VOLTAGE: V
+
(V)
10
100
75
50
25
20
30
0
40
Fig.6 Input bias current vs.
power supply voltage
INPUT VOLTAGE OUTPUT VOLTAGE
V
IN
(V) V
OUT
(V)
TIME (
s)
0
5
5
5
5
0
20
30
40
10
0
Fig.7 Output response characteristics
MAXIMUM OUTPUT VOLTAGE: V
OM
(V)
POWER SUPPLY VOLTAGE: V
(V)
30
20
10
0
10
20
0
10
20
R
L
= 2k
Fig.8 Maximum output voltage vs.
power supply voltage
Operation notes
(1) Unused circuit connections
If there are any circuits which are not being used, we
recommend making connections as shown in Figure 9,
with the non-inverted input pin connected to the poten-
tial within the in-phase input voltage range (V
ICM
).
V
CC
V
EE
+
To potential
in V
ICM
Fig.9 Unused circuit connections
5
Standaed ICs
BA15218 / BA15218F / BA15218N
External dimensions (Units: mm)
DIP8
SOP8
SIP8
BA15218
BA15218F
BA15218N
0.5
0.1
3.2
0.2
3
.4
0.3
8
5
1
4
9.3
0.3
6.5
0.3
0.3
0.1
0.51Min.
2.54
0
~15
7.62
0.4
0.1
1.27
0.15
0.3Min.
0.15
0.1
0.11
6.2
0.3
4.4
0.2
5.0
0.2
8
5
4
1
1.5
0.1
10.5
0.5
1
8
2.54
3.5
0.5
1.3
0.8
0.6
0.3
0.1
2.8
0.2
19.3
0.2
1.2
5.8
0.2
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