Ordering number : EN5682
CMOS LSI
LC7972VA, 7972VB
CMOS Operational Amplifier with Programmable
Offset Correction Function
Overview
The LC7972VA and LC7972VB are dual
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.
鈥?The following modes are supported. These are selected
via port level settings.
Package Dimensions
unit: mm
3179A-SSOP20
[LC7972VA, VB]
Features
鈥?High input impedance provided by fabrication in a
CMOS process.
鈥?Low power provided by fabrication in a CMOS process.
鈥?One of two types of operational amplifier can be
selected: inverting (operational amplifier 1) or
noninverting (operational amplifier 2)
鈥?Operating supply voltage: 4.9 to 5.2 V
鈥?Package: SSOP20
鈥?Operating temperature: Ta = 鈥?0 to +70擄C
Port
OP1ON
Level
L
H
L
OP2ON
H
L
OFST1
H
L
OFST2
CLKC
H
L
Function
Operational amplifier 1: Operation stopped (low-power mode)
Operational amplifier 1: Normal operation (OP2ON must be low in this mode.)
Operational amplifier 2: Operation stopped (low-power mode)
Operational amplifier 2: Normal operation (OP1ON must be low in this mode.)
Operational amplifier 1: Offset mode (inverting input = V
SS
)
Operational amplifier 1: Operating mode (inverting input = normal input)
Operational amplifier 2: Offset mode (noninverting input = V
SS
)
Operational amplifier 2: Operating mode (noninverting input = normal input)
Operational amplifier power supply clock: Internal clock
SANYO: SSOP20
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which may directly or indirectly cause injury, death or property loss.
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distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all
damages, cost and expenses associated with such use:
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SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.
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Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for
volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied
regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of July, 1997. Specifications and information herein are subject to change
without notice.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
73097HA(OT) No. 5682-1/4
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