HTC8581,HTC8582
Data Sheet
High-Precision, Rail-to-Rail I/O Operational Amplifier
General Description
The HTC8581(single) and HTC8582(dual) are high-precision, low-quiescent current
amplifier which can offer high input impedance and rail-to-rail input and output. The
amplifier uses auto-zeroing techniques to provide low offset voltage(25μV type) and near
zero-drift over time and temperature.
Either single or dual supplies can be used in the range from 2.3V to 5.5V (±1.15V to
±2.75V)
The HTC8581 is available in SC70-5,SOT23-5, MSOP-8 and SOP-8.The HTC8582 is
available in MSOP-8 and SOP-8. All versions ae specified for operation from -40 ℃ to
+125 ℃.
Features
Low Offset Voltage:25μV(Type)
Zero-Drift:0.03 μV/℃
Low Noise:45 nV/ 𝐻𝐻𝐻𝐻
0.1-Hz to 10-Hz Noise:0.55 μVpp
Excellent DC Precision:
Open-Loop Gain: 135dB
PSRR: 110dB
CMRR: 110dB
Gain Bandwidth: 1.8MHz
Quiescent Current: 350 μA(Type)
Supply Range: ±1.15V to ±2.75V
Rail-to-Rail Input and Output
Application
Bridge Amplifier
Strain Gauges
Transducer Applications
Temperature Measurement
Electronic Scales
Medical Instrumentation
Resistance Temperature Detectors
Handheld Test Equipment
Pin Configurations
HTC8581
HTC8581
SC70-5/SOT23-5
OUT
1
﹣VS
2
﹢IN
3
1
HTC8582
MSOP-8/SO-8
5
4
﹢VS
﹣IN
HUATECH
SEMICONDUCTOR
MSOP-8/SO-8
NC
1
8
NC
OUT A
1
﹣IN
2
7
﹢VS
﹣IN A
2
﹢IN
3
6
OUT
﹢IN A
3
﹣VS
4
5
NC
﹣VS
4
A
B
8
﹢VS
7
OUT B
6
﹣IN B
5
﹢IN B
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Huatech (and design) is a registered trademark of Huatech Semiconductor Inc.
Copyright Huatech Semiconductor Inc. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
FN1618-20.1.b
HTC8581,HTC8582
Data Sheet
High-Precision, Rail-to-Rail I/O Operational Amplifier
Pin Description
Symbol
Description
–IN
Inverting Input of the Amplifier. The Voltage can go from (VS-) to (VS+).
+IN
Non-Inverting Input of Amplifier. This pin has the same voltage range as –IN.
+VS
Positive Power Supply. The Voltage is from 2.3V to 5.5V(±1.15V to ±2.75V).
–VS
Negative Power Supply. It is normally tied to ground.
OUT
Amplifier Output.
N/C
No Connection.
Ordering Information
Type Number
Package Name
Package Quantity
Marking Code
HTC8581XC5/R6
SC70-5
Tape and Reel,3000
C81XX
HTC8581XT5/R6
SOT23-5
Tape and Reel,3000
C81XX
HTC8581XS8/R8
SOP-8
Tape and Reel,4000
C8581X
HTC8581XV8/R6
MSOP-8
Tape and Reel,3000
C8581X
HTC8582XS8/R8
SOP-8
Tape and Reel,4000
C8582X
HTC8582XV8/R6
MSOP-8
Tape and Reel,3000
C8582X
Recommended Operating Conditions
Operating voltage range: 2.3V to 5.5V(±1.15V to ±2.75V)
Specified temperature range: -40℃ to 125℃
2
HUATECH
SEMICONDUCTOR
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Huatech (and design) is a registered trademark of Huatech Semiconductor Inc.
Copyright Huatech Semiconductor Inc. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
FN1618-20.1.b
HTC8581,HTC8582
Data Sheet
High-Precision, Rail-to-Rail I/O, 45-V Operational Amplifier
Absolute Maximum Ratings
Attention: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the
device. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
Parameter
Symbol
Absolute Maximum Rating
Supply Voltage
Input terminal
Temperature
Electrostatic Discharge
Voltage
Unit
±3,+6(Single)
V
Voltage
VS--0.5 to VS++0.5
V
Differential Voltage
±5
V
Operating(2),TA
-55 to 150
℃
Storage , Tstg
-65 to 150
℃
Junction , TJ
150
℃
HBM
8
kV
MM
1
kV
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent
damage to the device. These are stress ratings only, which do not imply functional operation of
the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may
affect device reliability.
(2) Provided device does not exceed maximum junction temperature (TJ) at any time.
3
HUATECH
SEMICONDUCTOR
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Huatech (and design) is a registered trademark of Huatech Semiconductor Inc.
Copyright Huatech Semiconductor Inc. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
FN1618-20.1.b
HTC8581,HTC8582
Data Sheet
High-Precision, Rail-to-Rail I/O Operational Amplifier
Electrical Characteristics
VS=+5V,TA=25℃,VCM=VS/2,VO=VS/2,RL=10kΩ connected to VS/2,unless otherwise noted.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
25
90
μV
INPUT CHARACTERISTICS
VOS
Input offset Voltage
VOS TC
Offset voltage drift
TA=-40℃ to﹢125℃
0.03
μV/℃
IB
Input bias current
VCM=VS/2
±100
pA
IOS
Input offset current
±100
pA
VCM
Common-mode
Voltage range
CMRR
AVOL
TA=-40℃ to﹢125℃
VS-
Common-mode
rejection ratio
VS-
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