
Overview
The
inverting/noninverting operational amplifier ICs that are
fabricated in a CMOS process. These ICs provide a
programmable offset correction function and a power
saving function for use when the operational amplifier is
unused, both of which can be controlled from a
microprocessor interface.
LC7972VA
and
LC7972VB
are
dual
Features
High input impedance provided by fabrication in a
CMOS process.
Low power provided by fabrication in a CMOS process.
One of two types of operational amplifier can be
selected: inverting (operational amplifier 1) or
noninverting (operational amplifier 2)
Operating supply voltage: 4.9 to 5.2 V
Package: SSOP20
Operating temperature: Ta = –30 to +70°C
The following modes are supported. These are selected
via port level settings.
Package Dimensions
unit: mm
3179A-SSOP20
CMOS LSI
Ordering number : EN5682
73097HA(OT) No. 5682-1/4
SANYO: SSOP20
[LC7972VA, VB]
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
CMOS Operational Amplifier with Programmable
Offset Correction Function
LC7972VA, 7972VB
Port
Level
Function
OP1ON
L
Operational amplifier 1: Operation stopped (low-power mode)
H
Operational amplifier 1: Normal operation (OP2ON must be low in this mode.)
OP2ON
L
Operational amplifier 2: Operation stopped (low-power mode)
H
Operational amplifier 2: Normal operation (OP1ON must be low in this mode.)
OFST1
L
Operational amplifier 1: Offset mode (inverting input = V
SS
)
Operational amplifier 1: Operating mode (inverting input = normal input)
H
OFST2
L
Operational amplifier 2: Offset mode (noninverting input = V
SS
)
Operational amplifier 2: Operating mode (noninverting input = normal input)
H
CLKC
L
Operational amplifier power supply clock: Internal clock
This catalog provides information as of July, 1997. Specifications and information herein are subject to change
without notice.
I
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equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of
which may directly or indirectly cause injury, death or property loss.
I
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SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.
I
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for
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regarding its use or any infringements of intellectual property rights or other rights of third parties.