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TC913A Datasheet(PDF) 1 Page - Microchip Technology

Part No. TC913A
Description  Dual Auto-Zeroed Operational Amplifiers
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Maker  MICROCHIP [Microchip Technology]
Homepage  http://www.microchip.com
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TC913A Datasheet(HTML) 1 Page - Microchip Technology

 
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© 2002 Microchip Technology Inc.
DS21482B-page 1
TC913A/TC913B
Features
• First Monolithic Dual Auto-Zeroed
Operational Amplifier
• Chopper Amplifier Performance Without External
Capacitors
-VOS:15µVMax
-VOS: Drift; 0.15µV/°C Max
- Saves Cost of External Capacitors
• SOIC Packages Available
• High DC Gain; 120dB
• Low Supply Current; 650
µA
• Low Input Voltage Noise
-0.65
µVP-P (0.1Hz to 10Hz)
• Wide Common Mode Voltage Range
-VSS to VDD -2V
• High Common Mode Rejection; 116dB
• Dual or Single Supply Operation:
-±3.3V to ±8.3V
- +6.5V to +16V
• Excellent AC Operating Characteristics
- Slew Rate; 2.5V/
µsec
- Unity-Gain Bandwidth; 1.5MHz
• Pin Compatible with LM358, OP-14, MC1458,
ICL7621, TL082, TLC322
Applications
• Instrumentation
• Medical Instrumentation
• Embedded Control
• Temperature Sensor Amplifier
• Strain Gage Amplifier
Device Selection Table
Package Type
General Description
The TC913 is the world's first complete monolithic, dual
auto-zeroed operational amplifier. The TC913 sets a
new standard for low power, precision dual-operational
amplifiers. Chopper-stabilized or auto-zeroed amplifi-
ers offer low offset voltage errors by periodically sam-
pling offset error, and storing correction voltages on
capacitors. Previous single amplifier designs required
two user-supplied, external 0.1
µF error storage correc-
tion capacitors — much too large for on-chip integra-
tion. The unique TC913 architecture requires smaller
capacitors,
making
on-chip
integration
possible.
Microvolt offset levels are achieved and external
capacitors are not required.
The TC913 system benefits are apparent when con-
trasted with a TC7650 chopper amplifier circuit imple-
mentation. A single TC913 replaces two TC7650's and
four capacitors. Five components and assembly steps
are eliminated.
The TC913 pinout matches many popular dual-opera-
tional amplifiers: OP-04, TLC322, LM358, and ICL7621
are typical examples. In many applications, operating
from dual 5V power supplies or single supplies, the
TC913 offers superior electrical performance, and can
be a functional drop-in replacement; printed circuit
board rework is not necessary. The TC913's low offset
voltage
error
eliminates
offset
voltage
trim
potentiometers often needed with bipolar and low
accuracy CMOS operational amplifiers.
The TC913 takes full advantage of Microchip's
proprietary CMOS technology. Unity gain bandwidth is
1.5MHz and slew rate is 2.5V/
µsec.
Part Number
Package
Temp.
Range
Offset
Voltage
TC913ACOA
8-Pin SOIC
0°C to
+70°C
15
µV
TC913ACPA
8-Pin PDIP
0°C to
+70°C
15
µV
TC913BCOA
8-Pin SOIC
0°C to
+70°C
30
µV
TC913BCPA
8-Pin PDIP
0°C to
+70°C
30
µV
1
2
3
4
6
5
-IN B
7
8
OUT A
-IN A
+IN A
V
SS
V
SS
V
DD
V
DD
+IN B
PDIP
SOIC
TC913ACPA
TC913BCPA
TC913ACOA
TC913BCOA
OUT B
A
B
1
2
3
4
6
5
-IN B
7
8
OUT A
-IN A
+IN A
+IN B
OUT B
A
B
Dual Auto-Zeroed Operational Amplifiers


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