1
Standard ICs
Quad ground sense operational
amplifier
BA10324A / BA10324AF / BA10324AFV
The BA10324A, BA10324AF, and BA10324AFV are monolithic ICs with four built-in 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. These products can be used in a wide range of administrative and industrial applications, including
transducer amplifiers and DC amplifiers.
•Applications
Ground sensing type pre-amplifiers
Active filters
DC amplifiers
Pulse generators.
•Features
1) Wide range of operating power supply voltages and
single power supply drive enabled.
(single power supply: 3 to 32V, dual power supply: ±
1.5 to ± 16V)
2) Common-mode input voltage can be operated from
the ground level.
3) Differential input voltage can be operated up to the
power supply voltage level.
4) Low current dissipation. (IQ= 0.6mA)
5) Low offset voltage and offset current. (VIO = 2mV, IIO
= 5nA typ.)
6) Four operational amplifiers with phase compensa-
tion are built into the DIP / SOP Pin 14.
7) Compatible with model 324 operational amplifiers of
other manufacturers.
•Block diagram
1
2
1OUT1
– IN1
+ IN1
VCC
+ IN2
–IN2
OUT2
OUT4
–IN4
+ IN4
VEE
+ IN3
–IN3
OUT3
14
213
312
411
510
69
78
+–+–
3
+––+4
BA10324A / BA10324AF / BA10324AFV
2
Standard ICs BA10324A / BA10324AF / BA10324AFV
•Internal circuit configuration
VCC
VEE
OUT
–IN
+ IN
•Absolute maximum ratings (Ta = 25°C)
Parameter Symbol Limits Unit
BA10324A BA10324AF BA10324AFV
Power supply voltage
Power dissipation
Differential input voltage
Common-mode input voltage
Operating temperature
Storage temperature
VCC 32 ( ± 16) 32 ( ± 16) 32 ( ± 16) V
950∗450∗400∗mW
VID ± VCC V
VI– 0.3 ~ VCC V
Topr – 40 ~ + 85 – 40 ~ + 85 – 40 ~ + 85 °C
Tstg
– 55
~
+ 125 – 55
~
+ 125 – 55
~
+ 125
°C
Pd
± VCC
– 0.3 ~ VCC
± VCC
– 0.3 ~ VCC
∗ Refer to the Pd characteristics diagram.
The values for the are those when BA10324AF / BA10324AFV it is mounted on a glass epoxy board (50mm × 50mm × 1.6mm).
3
Standard ICs BA10324A / BA10324AF / BA10324AFV
•Electrical characteristics (unless otherwise noted, Ta = 25°C, VCC = 5V)
Parameter Symbol Min. Typ. Max. Unit Conditions
V
IO
—2 7mVR
S
= 50Ω
I
IO
— 5 50 nA
Ib — 20 250 nA
V
ICM
0—V
CC
– 1.5
V
CC
– 1.5
V
CMRR 65 75 — dB
A
VOI
87 100 — dB
PSRR 65 100 — dB R
S
= 50Ω
I
Q
— 0.6 2.0 mA
V
OH
——VR
L
= 2kΩ
V
OL
— — 0.25 V R
L
= ∞
Source
Sink
I
OH
20 35 — mA V
O
= 0
I
OL
10 20 — mA V
O
= V
CC
CS — 120 — dB f = 1kHz
input conversion
R
L
⭌ 2kΩ, V
CC
= 15V
R
L
= ∞, on All Op - Amps
∗
1
∗
1 Because the first stage is configured with a PNP transistor, input bias current is from the IC.
Input offset voltage
Input offset current
Input bias current
Common-mode input voltage
Common-mode rejection ratio
High-amplitude voltage gain
Power supply voltage rejection ratio
Quiescent current
Maximum output voltage
Maximum
output current
Channel separation
•Electrical characteristic curves
1200
1000
800
600
400
200
00 25 50 75 85 100 125 150
AMBIENT TEMPERATURE: Ta (°C)
POWER DISSIPATION: Pd (mW)
Fig.1 Power dissipation vs. ambient
temperature
BA10324A
BA10324AF
BA10324AFV
2.0
1.5
1.0
0.5
010203040
POWER SUPPLY VOLTAGE: V+ (V)
SUPPLY CURRENT: IQ (mA)
VCC AIQ
+
–
Fig.2 Quiescent current vs. power
supply voltage
140
120
20
100
80
60
40
00 10 100 1k 10k 100k 1M 10M
FREQUENCY: f (Hz)
OPEN LOOP VOLTAGE GAIN: AV (dB)
10M
VO
2
VCC
VIN
0.1µFVCC
+
–
~
Fig.3 Open loop voltage gain vs.
frequency
4
Standard ICs BA10324A / BA10324AF / BA10324AFV
20
15
10
5
0
100 1k 10k 100k 1M
FREQUENCY: f (Hz)
MAXIMUM OUTPUT VOLTAGE: VOM (V)
100k
VO
VIN
2k
1k
7V
15V
~+
–
Fig.4 Maximum output voltage vs.
frequency
50
40
0
– 20 0 20 40 60 80
10
20
30
AMBIENT TEMPERATURE: Ta (°C)
INPUT BIAS CURRET
:
I
B
(
nA)
Fig.5 Input bias current vs. ambient
temperature
40
010 20 30 40
10
20
30
POWER SUPPLY VOLTAGE: V
+
(V)
INPUT BIAS CURRENT: I
B
(nA)
Fig.6 Input bias current vs. power supply
voltage
5
3
2
4
0
0.001 0.01 0.1 1.0 10 100
1
OUTPUT SOURCE CURRENT (mA)
OUTPUT VOLTAGE
REFERENCED TO V
+
: ∆V (V)
Fig.7 Potential difference during
power supply output vs. output
source current
0.01
0.1
1.0
10
0.001 0.01 0.1 1.0 10 100 1000
OUTPUT SINK CURRENT: I
O
(mA)
OUTPUT VOLTAGE: V
O
(V)
Fig.8 Output voltage vs. output sink
current
R
L
⭌ 2kΩ
V
CC
= 15V
4
3
2
1
0
0020406080
1
2
3
TIME (µs)
INPUT VOLTAGE OUTPUT VOLTAGE
V
IN
(V) V
OUT
(V)
Fig.9 Output response characteristics
•Operation notes
(1) Unused circuit connections
If there are any circuits which are not being used, we
recommend making connections as shown in Figure
10, with the non-inverted input pin connected to the
potential within the in-phase input voltage range (VICM).
VCC
VEE
+
–
Fig.10 Unused circuit connections
To potential
in VICM
5
Standard ICs BA10324A / BA10324AF / BA10324AFV
BA10324A BA10324AF
BA10324AFV
DIP14 SOP14
SSOP-B14
6.5 ± 0.3
19.4 ± 0.3
0.5 ± 0.1
3.2 ± 0.2 4.25 ± 0.3
14 8
71
0.3 ± 0.1
0.51Min.
7.62
0° ~ 15°
2.54
0.4 ± 0.11.27
1
14
8.7 ± 0.2
7
8
4.4 ± 0.2
6.2 ± 0.3
0.11
1.5 ± 0.1
0.15
0.15 ± 0.1
0.3Min.
0.1
0.22 ± 0.1
0.65
8
7
14
1
6.4 ± 0.3
4.4 ± 0.2
5.0 ± 0.2
1.15 ± 0.1
0.15 ± 0.1
0.3Min.
0.1
•External dimensions (Units: mm)
Appendix
Appendix1-Rev1.0
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document use silicon as a basic material.
Products listed in this document are no antiradiation design.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
