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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 = 1.0µV
rms typ. : RIAA)
3) High slew rate. (SR = 3V / µs, 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 characteristics 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
VCC
OUT2
–IN2
+ IN2
1ch
2ch
–
+
–
+
1OUT1
2– IN1
3+ IN1
4VEE5+ IN2
6– IN2
7OUT2
8V
CC
2ch
1ch
BA15218 / BA15218F BA15218N
•
Features
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2
Standaed ICs BA15218 / BA15218F / BA15218N
•
Internal circuit configuration
VCC
VEE
Q3
R2 R3
R4
Q4
D1
C2
Q6
Q7
Q10
Q9
C1
R1
Q5
Q8
Q11
Q13
R6
R7
Q12
Q1
–IN
+ IN
Q
2
R5
Q14
Q15
Q16
OTHER
CH
Q
17
R8
Q19
Q18
R9
OUT
•
Absolute maximum ratings (Ta = 25°C)
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 ± VCC V
V
I –VCC ~ VCC 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
–VCC ~ VCC
± VCC
–VCC ~ VCC
∗
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).
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Standaed ICs BA15218 / BA15218F / BA15218N
•
Electrical characteristics (unless otherwise noted, Ta = 25°C, VCC = +15V, VEE = -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 RS ⬉ 10kΩ
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 RL ⭌ 10kΩ
V
OL
± 10 ± 13 — V RL ⭌ 2kΩ
CMRR 70 90 — dB R
S
⬉ 10kΩ
PSRR 76 90 — dB R
S
⬉ 10kΩ
I
Q
—5 8mA
S.R. — 3 —
CS — 120 — dB f = 1kHz input conversion
GBW — 10 — MHz f = 10kHz
V
n
— 1.0 — µV
rms
V / µs
R
L
⭌ 2kΩ, VO =
± 10V
V
IN
= 0V, RL =
∞
A
V
= 1, RL = 2k
Ω
RIAA, R
S
= 1k
Ω, 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: IQ (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: Av (dB)
FREQUENCY: f (Hz)
140
20
40
60
80
100
120
0
110
100 1k 10k 100k 1M 10M
Fig.3 Open loop voltage gain vs.
frequency
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Standaed ICs BA15218 / BA15218F / BA15218N
MAXIMUM OUTPUT VOLTAGE: VOM (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: IB (nA)
AMBIENT TEMPERATURE: Ta (°C)
20
40
60
80
– 20
0 20406080
Fig.5 Input bias current vs.
ambient temperature
INPUT BIAS CURRENT: IB (nA)
POWER SUPPLY VOLTAGE: V+ (V)
10
100
75
50
25
20 30040
Fig.6 Input bias current vs.
power supply voltage
INPUT VOLTAGE OUTPUT VOLTAGE
V
IN (V) VOUT (V)
TIME (µs)
0
–5
5
–5
5
0
20 30 40100
Fig.7 Output response characteristics
MAXIMUM OUTPUT VOLTAGE: VOM (V)
POWER SUPPLY VOLTAGE: V± (V)
30
–20
–10
0
10
20
0
± 10 ± 20
RL = 2kΩ
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 potential within the in-phase input voltage range (V
ICM).
VCC
VEE
+
–
To potential
in V
ICM
Fig.9 Unused circuit connections
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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
85
14
9.3
±
0.3
6.5
±
0.3
0.3
±
0.1
0.51Min.
2.54
0°~15°
7.62
0.4 ± 0.11.27
0.15
0.3Min.
0.15 ± 0.1
0.11
6.2 ± 0.3
4.4 ± 0.2
5.0 ± 0.2
85
41
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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