© 2006 Microchip Technology Inc. DS21482C-page 1
TC913A/TC913B
Features:
• First Monolithic Dual Auto-Zeroed
Operational Amplifier
• Chopper Amplifier Performance Without External
Capacitors:
-V
OS
: 15 μV Max.
-V
OS
: Drift; 0.15 μV/°C Max.
- Saves Cost of Ext ernal Capacit ors
• SOIC Packages Available
• High DC Gain; 120dB
• Low Supply Current; 650 μA
• Low Input Voltage Noise:
- 0.65 μV
P-P
(0.1 Hz to 10 Hz)
• Wide Common Mode Voltage Range:
-V
SS
to V
DD
- 2V
• High Common Mode Rejection; 116dB
• Dual or Single Supply Operation:
- ±3.3V to ±8.3V
- +6.5V to +16V
• Excellent AC Operating Character istics:
- Slew Rate; 2.5V/μsec
- Unity-Gain Bandwidth; 1.5 MHz
• Pin Compatible with LM358, OP-1 4, 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 st andard fo r low-powe r , preci sion dual -operationa l
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-s uppli ed, ex ternal 0 .1μF error storag e 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-
ment ati on. A single TC913 repl ac es tw o TC76 50’s and
four ca pacitors . Five co mponents and assem bly steps
are eliminated.
The TC913 pinout matches many popular dual-opera-
tional amplifiers: OP-04, TLC3 22, LM358, and ICL 7621
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
1.5 MHz 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
8OUT 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
8OUT A
-IN A
+IN A
+IN B
OUT
+
-
-
+
A
B
Dual Auto-Zeroed Operational Amplifiers
