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TC913A

更新时间： 2024-10-31 22:42:23
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美国微芯 - MICROCHIP 运算放大器
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12页 430K
描述
Dual Auto-Zeroed Operational Amplifiers

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TC913A 数据手册

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TC913A/TC913B  
Dual Auto-Zeroed Operational Amplifiers  
Features  
Package Type  
PDIP  
• First Monolithic Dual Auto-Zeroed  
Operational Amplifier  
TC913ACPA  
TC913BCPA  
• Chopper Amplifier Performance Without External  
Capacitors  
1
OUT A  
8
7
6
5
V
A
+
DD  
B
-
2
3
4
OUT B  
-IN A  
- V : 15µV Max  
OS  
+
-
+IN A  
-IN B  
- V : Drift; 0.15µV/°C Max  
OS  
V
+IN B  
SS  
- Saves Cost of External Capacitors  
• SOIC Packages Available  
• High DC Gain; 120dB  
SOIC  
TC913ACOA  
TC913BCOA  
• Low Supply Current; 650µA  
• Low Input Voltage Noise  
V
1
2
3
4
OUT A  
-IN A  
8
7
6
5
DD  
A
+
B
-
OUT B  
-IN B  
- 0.65µV  
(0.1Hz to 10Hz)  
P-P  
+
-
+IN A  
• Wide Common Mode Voltage Range  
V
+IN B  
SS  
- V to V - 2V  
SS  
DD  
• High Common Mode Rejection; 116dB  
• Dual or Single Supply Operation:  
- ±3.3V to ±8.3V  
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 0.1µF 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.  
- +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  
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.  
• Temperature Sensor Amplifier  
• Strain Gage Amplifier  
Device Selection Table  
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.  
Temp.  
Range  
Offset  
Voltage  
Part Number  
Package  
TC913ACOA 8-Pin SOIC  
TC913ACPA 8-Pin PDIP  
TC913BCOA 8-Pin SOIC  
TC913BCPA 8-Pin PDIP  
0°C to  
+70°C  
15µV  
0°C to  
+70°C  
15µV  
30µV  
30µV  
0°C to  
+70°C  
0°C to  
+70°C  
The TC913 takes full advantage of Microchip's  
proprietary CMOS technology. Unity gain bandwidth is  
1.5MHz and slew rate is 2.5V/µsec.  
2002 Microchip Technology Inc.  
DS21482B-page 1  
1234567...12

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