TC913A_06_技术文档

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_OS: 15 μV Max.

+

-

+IN A

-IN B

- V_OS: Drift; 0.15 μV/°C Max.

- Saves Cost of External Capacitors

• SOIC Packages Available

• High DC Gain; 120dB

V

+IN B

SS

SOIC

TC913ACOA

TC913BCOA

• 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_SSto V_DD- 2V

V

1

2

3

4

OUT A

-IN A

8

7

6

5

DD

A

+

B

-

OUT B

-IN B

+

-

+IN A

V

+IN B

SS

• 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; 1.5 MHz

• 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

TC913ACOA 8-Pin SOIC

TC913ACPA 8-Pin PDIP

TC913BCOA 8-Pin SOIC

TC913BCPA 8-Pin PDIP

Package

0°C to

+70°C

15 μV

30 μV

0°C to

+70°C

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

1.5 MHz and slew rate is 2.5V/μsec.

DS21482C-page 1

TC913A/TC913B

Functional Block Diagram

V

DD

SS

4

8

TC913

V

Correction Amplifier

OS

+

–

Internal

A

B

A

Oscillator

(f

200 Hz)

OSC

B

*

Low-Impedance

Output Buffer

-Input A

-Input B

+Input A

+Input B

2

6

5

-

+

1

7

Output A

Output B

+

3

-

Main Amplifier

1 of 2 Amplifier Shown

*NOTE: Internal capacitors. No external capacitors required.

DS21482C-page 2

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 (V_DDto V_SS) .......................+18V

Input Voltage ...................... (V_DD+0.3V) to (V_SS^-0.3V)

Current Into Any Pin...........................................10 mA

While Operating.........................................100 μA

Package Power Dissipation (T_A– 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: V = ±5V, T = +25°C, unless otherwise indicated.

S

A

TC913A

TC913B

Symbol

Parameter

Min

Typ

Max

Min

Typ

Max

Unit

Test Conditions

T = +25°C

V

Input Offset

Voltage

—

5

15

—

15

30

μV

OS

A

TCV

Average Temp.

Coefficient of

Input Offset

Voltage

—

0.05

0.15

—

0.1

0.25

μV/°C 0°C ≤ T ≤ +70°C

OS

A

μV/°C -25°C ≤ T ≤ +85°C

A

(Note 1)

I

Average Input

Bias Current

—

90

3

4

—

120

4

6

pA

nA

T = +25°C

B

A

0°C ≤ T ≤ +70°C

A

-25°C ≤ T ≤ +85°

A

I

Average Input

Offset Current

—

5

—

20

1

—

10

—

40

1

pA

nA

T = +25°C

A

OS

T = +85°C

A

e

Input Voltage

Noise

—

0.6

11

—

0.6

11

—

μV

0.1 to 1 Hz, R ≤ 100Ω

N

P-P

S

0.1 to 10 Hz, R ≤ 100Ω

S

CMRR Common Mode

Rejection Ratio

110

116

—

100

110

—

dB

V

≤ V

≤ V - 2.2

SS

CM DD

CMVR Common Mode

Voltage Range

V

2

V

2

V

dB

V

SS

—

DD -

SS

—

DD -

A

Open-Loop

115

+ 0.3

120

—

110

+ 0.3

120

—

R = 10 kΩ, V

= ±4V

OL

L

OUT

Voltage Gain

V

Output Voltage

Swing

V

—

V

- 0.9

V

—

V

-0.9

R = 10 kΩ

OUT

SS

DD

SS

DD

L

BW

SR

Closed Loop

Bandwidth

—

1.5

—

1.5

—

MHz Closed Loop Gain = +1

Slew Rate

—

2.5

—

2.5

—

V/μsec R = 10 kΩ, C = 50 pF

L

PSRR Power Supply

Rejection Ratio

110

100

dB

±3.3V to ±5.5V

V

Operating

Supply Voltage

Range

±3.5

7.0

—

±8.3

16

±3.5

7.0

—

±8.3

16

V

Split Supply

Single Supply

S

I

Quiescent

—

0.65

0.85

—

1.1

mA

V = ±5V

S

Supply Current

Note 1: Characterized; not 100% tested.

DS21482C-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

Symbol

Pin No.

(8-Pin PDIP)

(8-Pin SOIC)

Description

1

2

3

4

5

6

7

8

OUT A

-IN A

+IN A

V_SS

Output

Inverting Input

Non-inverting Input

Negative Power Supply

Non-inverting Input

Inverting Input

+IN B

-IN B

OUT B

V_DD

Output

Positive Power Supply

DS21482C-page 4

TC913A/TC913B

3.3

Overload Recovery

3.0

3.1

DETAILED DESCRIPTION

Theory of Operation

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.

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.

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.

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

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.

DS21482C-page 5

TC913A/TC913B

4.0

TYPICAL CHARACTERISTICS

Note:

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

Supply Current vs. Supply Voltage

Gain and Phase vs. Frequency

1200

50

40

30

20

225

180

135

90

35

30

25

20

15

V

T

= 5V

T

= +25°C

S

A

V

T

=

5V

A

= +25°C

W

A

= +25°C

1000

800

600

400

200

0

A

PHASE

R

= 10 k

L

GAIN

10

0

45

0

-10

-20

-30

-40

-45

10

-90

5

0

-135

-180

2

3

4

5

6

7

8

-6 -5 -4 -3 -2 -1

0

1

2

3

4

10k

100k

1M

10M

SUPPLY VOLTAGE (V)

INPUT COMMON MODE VOLTAGE (V)

FREQUENCY (Hz)

Output Voltage Swing vs.

Load Resistance

Positive Overload Recovery Time

Negative Overload Recovery Time

T

= +25°C

A

R

T

= 10 kW

L

-SWING

+SWING

V

= 5V

S

= +25°C

OUTPUT =

2 V/DIV

5.0

4.2

A

INPUT

0V

3.4

2.6

1.8

1.0

OUTPUT

= 2 V/DIV

INPUT

GAIN = –20

HORIZONTAL SCALE = 20 msec/DIV

INPUT

Gain = –20

HORIZONTAL SCALE = 20 msec/DIV

100

1k

10k

100k

1M

LOAD RESISTANCE (W)

DS21482C-page 6

TC913A/TC913B

5.0

5.1

PACKAGING INFORMATION

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

Carrier Width (W)

Pitch (P)

Part Per Full Reel

Reel Size

8-Pin SOIC (N)

12 mm

8 mm

2500

13 in

DS21482C-page 7

TC913A/TC913B

5.3

Package Dimensions

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)

.013 (0.33)

.010 (0.25)

.004 (0.10)

.050 (1.27)

.016 (0.40)

Dimensions: inches (mm)

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)

.015 (0.38)

.008 (0.20)

3° Min.

.150 (3.81)

.115 (2.92)

.400 (10.16)

.310 (7.87)

.110 (2.79)

.090 (2.29)

.022 (0.56)

.015 (0.38)

Dimensions: inches (mm)

DS21482C-page 8

TC913A/TC913B

THE MICROCHIP WEB SITE

CUSTOMER SUPPORT

Microchip provides online support via our WWW site at

www.microchip.com. This web site is used as a means

to make files and information easily available to

customers. Accessible by using your favorite Internet

browser, the web site contains the following

information:

Users of Microchip products can receive assistance

through several channels:

• Distributor or Representative

• Local Sales Office

• Field Application Engineer (FAE)

• Technical Support

• Product Support – Data sheets and errata,

application notes and sample programs, design

resources, user’s guides and hardware support

documents, latest software releases and archived

software

• Development Systems Information Line

Customers

should

contact

their

distributor,

representative or field application engineer (FAE) for

support. Local sales offices are also available to help

customers. A listing of sales offices and locations is

included in the back of this document.

• General Technical Support – Frequently Asked

Questions (FAQ), technical support requests,

online discussion groups, Microchip consultant

program member listing

Technical support is available through the web site

at: http://support.microchip.com

• Business of Microchip – Product selector and

ordering guides, latest Microchip press releases,

listing of seminars and events, listings of

Microchip sales offices, distributors and factory

representatives

CUSTOMER CHANGE NOTIFICATION

SERVICE

Microchip’s customer notification service helps keep

customers current on Microchip products. Subscribers

will receive e-mail notification whenever there are

changes, updates, revisions or errata related to a

specified product family or development tool of interest.

To register, access the Microchip web site at

www.microchip.com, click on Customer Change

Notification and follow the registration instructions.

DS21482C-page 9

TC913A/TC913B

READER RESPONSE

It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip prod-

uct. If you wish to provide your comments on organization, clarity, subject matter, and ways in which our documentation

can better serve you, please FAX your comments to the Technical Publications Manager at (480) 792-4150.

Please list the following information, and use this outline to provide us with your comments about this document.

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RE:

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Telephone: (_______) _________ - _________

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Application (optional):

Would you like a reply?

Y

N

TC913A/TC913B

DS21482C

Literature Number:

Device:

Questions:

1. What are the best features of this document?

2. How does this document meet your hardware and software development needs?

3. Do you find the organization of this document easy to follow? If not, why?

4. What additions to the document do you think would enhance the structure and subject?

5. What deletions from the document could be made without affecting the overall usefulness?

6. Is there any incorrect or misleading information (what and where)?

7. How would you improve this document?

DS21482C-page 10

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

knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data

Sheets. Most likely, the person doing so is engaged in theft of intellectual property.

•

Microchip is willing to work with the customer who is concerned about the integrity of their code.

Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not

mean that we are guaranteeing the product as “unbreakable.”

Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our

products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts

allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

Information contained in this publication regarding device

applications and the like is provided only for your convenience

and may be superseded by updates. It is your responsibility to

ensure that your application meets with your specifications.

MICROCHIP MAKES NO REPRESENTATIONS OR

WARRANTIES OF ANY KIND WHETHER EXPRESS OR

IMPLIED, WRITTEN OR ORAL, STATUTORY OR

OTHERWISE, RELATED TO THE INFORMATION,

INCLUDING BUT NOT LIMITED TO ITS CONDITION,

QUALITY, PERFORMANCE, MERCHANTABILITY OR

FITNESS FOR PURPOSE. Microchip disclaims all liability

arising from this information and its use. Use of Microchip

devices in life support and/or safety applications is entirely at

the buyer’s risk, and the buyer agrees to defend, indemnify and

hold harmless Microchip from any and all damages, claims,

suits, or expenses resulting from such use. No licenses are

conveyed, implicitly or otherwise, under any Microchip

intellectual property rights.

Trademarks

The Microchip name and logo, the Microchip logo, Accuron,

dsPIC, KEELOQ, microID, MPLAB, PIC, PICmicro, PICSTART,

PRO MATE, PowerSmart, rfPIC, and SmartShunt are

registered trademarks of Microchip Technology Incorporated

in the U.S.A. and other countries.

AmpLab, FilterLab, Migratable Memory, MXDEV, MXLAB,

SEEVAL, SmartSensor and The Embedded Control Solutions

Company are registered trademarks of Microchip Technology

Incorporated in the U.S.A.

Analog-for-the-Digital Age, Application Maestro, dsPICDEM,

dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR,

FanSense, FlexROM, fuzzyLAB, In-Circuit Serial

Programming, ICSP, ICEPIC, Linear Active Thermistor, Mindi,

MiWi, MPASM, MPLIB, MPLINK, PICkit, PICDEM,

PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo,

PowerMate, PowerTool, REAL ICE, rfLAB, rfPICDEM, Select

Mode, Smart Serial, SmartTel, Total Endurance, UNI/O,

WiperLock and ZENA are trademarks of Microchip

Technology Incorporated in the U.S.A. and other countries.

SQTP is a service mark of Microchip Technology Incorporated

in the U.S.A.

All other trademarks mentioned herein are property of their

respective companies.

Printed on recycled paper.

Microchip received ISO/TS-16949:2002 certification for its worldwide

headquarters, design and wafer fabrication facilities in Chandler and

Tempe, Arizona, Gresham, Oregon and Mountain View, California. The

Company’s quality system processes and procedures are for its

PICmicro^®8-bit MCUs, KEELOQ^®code hopping devices, Serial

EEPROMs, microperipherals, nonvolatile memory and analog

products. In addition, Microchip’s quality system for the design and

manufacture of development systems is ISO 9001:2000 certified.

DS21482C-page 11

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02/16/06

DS21482C-page 12


型号：	TC913A_06
厂家：	MICROCHIP
描述：	Dual Auto-Zeroed Operational Amplifiers 双自动调零运算放大器运算放大器
文件：	总12页 (文件大小：248K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

TC913A_06 [MICROCHIP]

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