MICROCHIP TC913A_13

TC913A/TC913B
Dual Auto-Zeroed Operational Amplifiers
Package Type
Features:
• First Monolithic Dual Auto-Zeroed
Operational Amplifier
• Chopper Amplifier Performance Without External
Capacitors:
- VOS: 15 V Max.
- VOS: Drift; 0.15 V/°C Max.
- Saves Cost of External Capacitors
• SOIC Packages Available
• High DC Gain; 120dB
• Low Supply Current; 650 A
• Low Input Voltage Noise:
- 0.65 VP-P (0.1 Hz to 10 Hz)
• 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/sec
- Unity-Gain Bandwidth; 1.5 MHz
• Pin Compatible with LM358, OP-14, MC1458,
ICL7621, TL082, TLC322
Applications:
•
•
•
•
•
Instrumentation
Medical Instrumentation
Embedded Control
Temperature Sensor Amplifier
Strain Gage Amplifier
PDIP
TC913ACPA
TC913BCPA
OUT A 1
-IN A 2
B
+
+IN A 3
V
8 V
A
- +
DD
7 OUT B
-
4
SS
6 -IN B
5 +IN B
SOIC
TC913ACOA
TC913BCOA
OUT A 1
-IN A 2
A
- +
+IN A 3
V
4
SS
8 V DD
B
+
7 OUT B
-
6 -IN B
5 +IN B
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 amplifiers offer low offset voltage errors by periodically sampling offset error, and storing correction voltages on
capacitors. Previous single amplifier designs required
two user-supplied, external 0.1F error storage correction capacitors — much too large for on-chip integration. 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 contrasted with a TC7650 chopper amplifier circuit implementation. A single TC913 replaces two TC7650’s and
four capacitors. Five components and assembly steps
are eliminated.
Device Selection Table
Temp.
Range
Offset
Voltage
Part Number
Package
TC913ACOA
8-Pin SOIC
0°C to
+70°C
15 V
TC913ACPA
8-Pin PDIP
0°C to
+70°C
15 V
TC913BCOA
8-Pin SOIC
0°C to
+70°C
30 V
TC913BCPA
8-Pin PDIP
0°C to
+70°C
30 V
 2001-2012 Microchip Technology Inc.
The TC913 pinout matches many popular dual-operational 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
1.5 MHz and slew rate is 2.5V/sec.
DS21482D-page 1
TC913A/TC913B
Functional Block Diagram
VDD
VSS
4
8
TC913
VOS Correction Amplifier
+
A
A
–
B
*
B
Internal
Oscillator
(fOSC 200 Hz)
*
-Input
-Input
+Input
+Input
A
B
A
B
2
6
5
3
+
Main Amplifier
Low-Impedance
Output Buffer
+
1
-
7
Output A
Output B
1 of 2 Amplifier Shown
*NOTE: Internal capacitors. No external capacitors required.
DS21482D-page 2
 2001-2012 Microchip Technology Inc.
TC913A/TC913B
1.0
ELECTRICAL
CHARACTERISTICS
*Stresses above those listed under “Absolute
Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only and functional
operation of the device at these or any other conditions
above those indicated in the operation sections of the
specifications is not implied. Exposure to Absolute
Maximum Rating conditions for extended periods may
affect device reliability.
Absolute Maximum Ratings*
Total Supply Voltage (VDD to VSS) ....................... +18V
Input Voltage ...................... (VDD +0.3V) to (VSS -0.3V)
Current Into Any Pin........................................... 10 mA
While Operating ......................................... 100 A
Package Power Dissipation (TA – 70°C)
Plastic DIP ............................................... 730 mW
Plastic SOIC ............................................ 470 mW
Operating Temperature Range
C Device .......................................... 0°C to +70°C
Storage Temperature Range.............. -65°C to +150°C
TC913A AND TC913B ELECTRICAL SPECIFICATIONS
Electrical Characteristics: VS = ±5V, TA = +25°C, unless otherwise indicated.
TC913A
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Input Offset
Voltage
—
5
15
—
15
30
V
TCVOS
Average Temp.
Coefficient of
Input Offset
Voltage
—
—
0.05
0.05
0.15
0.15
—
—
0.1
0.1
0.25
0.25
V/°C
V/°C
IB
Average Input
Bias Current
—
—
—
—
—
—
90
3
4
—
—
—
—
—
—
120
4
6
pA
nA
nA
TA = +25°C
0°C  TA  +70°C
-25°C  TA  +85°
IOS
Average Input
Offset Current
—
—
5
—
20
1
—
—
10
—
40
1
pA
nA
TA = +25°C
TA = +85°C
eN
Input Voltage
Noise
—
—
0.6
11
—
—
—
—
0.6
11
—
—
VP-P
VP-P
VOS
Parameter
TC913B
Test Conditions
TA = +25°C
0°C  TA  +70°C
-25°C  TA  +85°C
(Note 1)
0.1 to 1 Hz, RS  100
0.1 to 10 Hz, RS  100
VSS  VCM  VDD - 2.2
CMRR
Common Mode
Rejection Ratio
110
116
—
100
110
—
dB
CMVR
Common Mode
Voltage Range
VSS
—
VDD - 2
VSS
—
VDD - 2
V
Open-Loop
Voltage Gain
115
120
—
110
120
—
dB
RL = 10 k, VOUT = ±4V
VSS + 0.3
—
VDD - 0.9
VSS + 0.3
—
VDD -0.9
V
RL = 10 k
—
1.5
—
—
1.5
—
MHz
AOL
VOUT
Output Voltage
Swing
BW
Closed Loop
Bandwidth
SR
Closed Loop Gain = +1
V/sec RL = 10 k, CL = 50 pF
Slew Rate
—
2.5
—
—
2.5
—
PSRR
Power Supply
Rejection Ratio
110
—
—
100
—
—
dB
±3.3V to ±5.5V
VS
Operating
Supply Voltage
Range
±3.5
7.0
—
—
±8.3
16
±3.5
7.0
—
—
±8.3
16
V
V
Split Supply
Single Supply
IS
Quiescent
Supply Current
—
0.65
0.85
—
—
1.1
mA
Note
1:
VS = ±5V
Characterized; not 100% tested.
 2001-2012 Microchip Technology Inc.
DS21482D-page 3
TC913A/TC913B
2.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1:
PIN FUNCTION TABLE
Pin No.
(8-Pin PDIP)
(8-Pin SOIC)
Symbol
1
OUT A
Description
Output
2
-IN A
Inverting Input
3
+IN A
Non-inverting Input
4
VSS
5
+IN B
6
-IN B
7
OUT B
8
VDD
DS21482D-page 4
Negative Power Supply
Non-inverting Input
Inverting Input
Output
Positive Power Supply
 2001-2012 Microchip Technology Inc.
TC913A/TC913B
3.0
DETAILED DESCRIPTION
3.1
Theory of Operation
Each of the TC913’s two Op Amps actually consists of
two amplifiers. A main amplifier is always connected
from the input to the output. A separate nulling amplifier
alternately nulls its own offset and then the offset of the
amplifier. Since each amplifier is continuously being
nulled, offset voltage drift with time, temperature and
power supply variations is greatly reduced.
All nulling circuitry is internal and the nulling operation
is transparent to the user. Offset nulling voltages are
stored on two internal capacitors. An internal oscillator
and control logic, shared by the TC913’s two amplifiers,
control the nulling process.
3.2
Pin Compatibility
3.3
Overload Recovery
The TC913 recovers quickly from output saturation.
Typical recovery time from positive output saturation is
20 msec. Negative output saturation recovery time is
typically 5 msec.
3.4
Avoiding Latch-up
Junction-isolated CMOS circuits inherently contain a
parasitic p-n-p-n transistor circuit. Voltages exceeding
the supplies by 0.3V should not be applied to the
device pins. Larger voltages can turn the p-n-p-n
device on, causing excessive device power supply
current and power dissipation. The TC913’s power
supplies should be established at the same time or
before input signals are applied. If this is not possible,
input current should be limited to 0.1 mA to avoid
triggering the p-n-p-n structure.
The TC913 pinout is compatible with OP-14, LM358,
MC1458, LT1013, TLC322, and similar dual Op Amps.
In many circuits operating from single or ±5V supplies,
the TC913 is a drop-in replacement offering DC
performance rivaling that of the best single Op Amps.
The TC913’s amplifiers include a low-impedance class
AB output buffer. Some previous CMOS chopper
amplifiers used a high-impedance output stage which
made open-loop gain dependent on load resistance.
The TC913’s open-loop gain is not dependent on load
resistance.
 2001-2012 Microchip Technology Inc.
DS21482D-page 5
TC913A/TC913B
4.0
TYPICAL CHARACTERISTICS
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Input Offset Voltage vs.
Common Mode Voltage
1200
INPUT OFFSET VOLTAGE (µV)
SUPPLY CURRENT (µA)
VA = ±5V
1000
800
600
400
200
0
2
3
4
5
6
± SUPPLY VOLTAGE (V)
7
8
± OUTPUT VOLTAGE (V)
Output Voltage Swing vs.
Load Resistance
5.0
TA = +25°C
VS = ±5V
4.2
Gain and Phase vs. Frequency
50
35
TA = +25°C
30
TA = +25°C
25
20
15
225
VS = ±5V
40
PHASE
30
180
TA = +25°C
RL = 10 kW
135
GAIN
20
90
10
45
0
0
-10
-45
-20
-90
5
-30
-135
0
-40
10k
10
-6
-5 -4 -3 -2 -1 0 1 2 3 4
INPUT COMMON MODE VOLTAGE (V)
Negative Overload Recovery Time
PHASE (deg)
Supply Current vs. ± Supply Voltage
CLOSED-LOOP GAIN (dB)
Note:
-180
10M
100k
1M
FREQUENCY (Hz)
Positive Overload Recovery Time
RL = 10 kW
-SWING
TA = +25°C
+SWING
OUTPUT =
2 V/DIV
INPUT
0V
0V
3.4
2.6
OUTPUT
= 2 V/DIV
1.8
Gain = –20
1.0
100
1k
10k
100k
LOAD RESISTANCE (W)
DS21482D-page 6
1M
HORIZONTAL SCALE = 20 msec/DIV
INPUT
INPUT
GAIN = –20
HORIZONTAL SCALE = 20 msec/DIV
 2001-2012 Microchip Technology Inc.
TC913A/TC913B
5.0
PACKAGING INFORMATION
5.1
Package Marking Information
Package marking data not available at this time.
5.2
Taping Form
Component Taping Orientation for 8-Pin SOIC (Narrow) Devices
User Direction of Feed
Pin 1
W
P
Standard Reel Component Orientation
for 713 Suffix Device
Carrier Tape, Number of Components Per Reel and Reel Size
Package
8-Pin SOIC (N)
 2001-2012 Microchip Technology Inc.
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
12 mm
8 mm
2500
13 in
DS21482D-page 7
TC913A/TC913B
5.3
Package Dimensions
Note:
For the most current package drawings, please see the Microchip Packaging Specification located
at http://www.microchip.com/packaging
8-Pin SOIC
Pin 1
.157 (3.99)
.150 (3.81)
.244 (6.20)
.228 (5.79)
.050 (1.27) Typ.
.197 (5.00)
.189 (4.80)
.069 (1.75)
.053 (1.35)
.010 (0.25)
.007 (0.18)
8° Max.
.020 (0.51) .010 (0.25)
.013 (0.33) .004 (0.10)
.050 (1.27)
.016 (0.40)
Dimensions: inches (mm)
Note:
For the most current package drawings, please see the Microchip Packaging Specification located
at http://www.microchip.com/packaging
8-Pin Plastic DIP
Pin1
.260 (6.60)
.240 (6.10)
.045 (1.14)
.030 (0.76)
.070 (1.78)
.040 (1.02)
.310 (7.87)
.290 (7.37)
.400 (10.16)
.348 (8.84)
.200 (5.08)
.140 (3.56)
.040 (1.02)
.020 (0.51)
.150 (3.81)
.115 (2.92)
.110 (2.79)
.090 (2.29)
.022 (0.56)
.015 (0.38)
.015 (0.38)
.008 (0.20)
3° Min.
.400 (10.16)
.310 (7.87)
Dimensions: inches (mm)
DS21482D-page 8
 2001-2012 Microchip Technology Inc.
TC913A/TC913B
6.0
REVISION HISTORY
Revision D (December 2012)
Added a note to each package outline drawing.
 2001-2012 Microchip Technology Inc.
DS21482D-page 9
TC913A/TC913B
NOTES:
DS21482D-page 10
 2001-2012 Microchip Technology Inc.
TC913A/TC913B
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 2001-2012 Microchip Technology Inc.
DS21482D-page 11
TC913A/TC913B
READER RESPONSE
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Device: TC913A/TC913B
Literature Number: DS21482D
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DS21482D-page 12
 2001-2012 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
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Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
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•
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Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
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Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
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and UNI/O are registered trademarks of Microchip Technology
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Printed on recycled paper.
ISBN: 9781620768440
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 2001-2012 Microchip Technology Inc.
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DS21482D-page 13
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Korea - Seoul
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
China - Hong Kong SAR
Tel: 852-2943-5100
Fax: 852-2401-3431
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
China - Shanghai
Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
Taiwan - Hsin Chu
Tel: 886-3-5778-366
Fax: 886-3-5770-955
China - Shenzhen
Tel: 86-755-8864-2200
Fax: 86-755-8203-1760
Taiwan - Kaohsiung
Tel: 886-7-213-7828
Fax: 886-7-330-9305
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Taiwan - Taipei
Tel: 886-2-2508-8600
Fax: 886-2-2508-0102
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
UK - Wokingham
Tel: 44-118-921-5869
Fax: 44-118-921-5820
China - Xiamen
Tel: 86-592-2388138
Fax: 86-592-2388130
China - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
DS21482D-page 14
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Japan - Tokyo
Tel: 81-3-6880- 3770
Fax: 81-3-6880-3771
11/29/12
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