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Texas Instruments SLOU061A, User Manual

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Texas Instruments SLOU061A User Manual Download Page 29

Quad Operational Amplifier Instrumentation Amplifier

3-11

Example Circuits

Figure 3–7. Quad Operational Amplifier Instrumentation Amplifier With Dual Supply Using

  Area 300

+

–

4

1

13

3

2

V3+

V3–

R302

C301

R304

C302

R301

R303

R305

R306

R308

R307

C304

C303

A3 OUT

A301–

A302–

A303+

A304+

U301A

C305

R309 A3 FLT

AB3/SD

8

+

–

7

5

6

R318

C308

R314

C310

R310

R312

R317

R313

R315

R311

C307

C309

B3 OUT

B301–

B302–

B303+

B304+

U301B

C306

R316

B3 FLT

+

–

10

12

11

R325

C316

R323

C317

R322

R324

R326

R327

R329

R328

C318

C319

C3 OUT

C301–

C302–

C303+

C304+

U301C

C320

R330

CD3/SD

9

+

–

16

14

15

R339

C321

R331

C324

R332

R333

R334

R335

R336

R337

C322

C325

D3 OUT

D301–

D302–

D303+

D304+

U301D

C323

R338

C3 FLT

D3 FLT

C313

C314

C311

C312

V3+

V3–

GND3

Power Supply Bypass

2.5 = V3+

2.5 = V3–

10 

µ

F

10 

µ

F

0.1 

µ

F

0.1 

µ

F

R320

U302

R319

Voltage Reference

V3+

VREF3

R321

C315

10 k

Ω

10 k

Ω

10 k

Ω

10 k

Ω

5 k

Ω

5 k

Ω

100 

Ω

Jumpers

Jumpers

Jumpers

Jumper

Jumper

+

–

VINA

+

–

VINB

+

–

Vadj

Summary of Contents for SLOU061A

Page 1: ...Universal Operational Amplifier Single Dual Quad SOIC Evaluation Module With Shutdown April 2001 Mixed Signal Products User s Guide SLOU061A...

Page 2: ...esign TI does not warrant or represent that any license either express or implied is granted under any patent right copyright mask work right or other intellectual property right of TI covering or rel...

Page 3: ...his evaluation module FCC Warning This equipment is intended for use in a laboratory test environment only It generates uses and can radiate radio frequency energy and has not been tested for complian...

Page 4: ...iv...

Page 5: ...4 2 4 Area 300 Quad Device SOIC 2 5 2 5 General Power Dissipation Considerations 2 7 2 6 EVM Component Placement 2 8 2 7 EVM Board Layout 2 9 3 Example Circuits 3 1 3 1 Schematic Conventions 3 2 3 2...

Page 6: ...plifier with Dual Supply Using Area 100 3 2 3 2 Noninverting Amplifier with Single Supply Using Area 100 3 3 3 3 Single Operational Amplifier Differential Amplifier With Single Supply Using Area 100 3...

Page 7: ...al operational amplifier single dual quad SOIC evaluation module EVM with shutdown SLOP248 The EVM simplifies evaluation of Texas Instruments surface mount op amps with or without shutdown feature Top...

Page 8: ...yer construction with a ground plane on the solder side Circuit performance should be comparable to final production designs 1 2 Power Requirements The devices and designs that are used dictate the in...

Page 9: ...shutdown board layout schematics of each area and describes the relationships between the three areas Topic Page 2 1 Physical Considerations 2 2 2 2 Area 100 Single Device SOIC 2 3 2 3 Area 200 Dual...

Page 10: ...the TLV431ACLP TLV431AILP TL431CLP TL431ACLP TL431ILP or TL431AILP adjustable shunt regulators can be used Refer to Texas Instruments Power Supply Circuits Data Book literature number SLVD002 for det...

Page 11: ...f the device and connecting the wiper to VCC via a resistor R101 as shown below This resistor is used to fine tune the offset adjustment For example when using the TLC070 or TLC071 device and a 100 k...

Page 12: ...t the top of the IC pad array the last six PCB pads three on each side pins 5 6 7 8 9 and 10 will not be used Figure 2 2 shows the area 200 schematic Figure 2 2 Area 200 Schematic Dual Device SOIC 14...

Page 13: ...down packaged in a 14 pin without shutdown or 16 pin with shutdown SOIC This surface mount package is designated by a D suffix in TI part numbers as in TxxxxID When using the nonshutdown version of th...

Page 14: ...A303 A304 U301A C305 R309 A3 FLT AB3 SD 8 7 5 6 R318 C308 R314 C310 R310 R312 R317 R313 R315 R311 C307 C309 B3 OUT B301 B302 B303 B304 U301B C306 R316 B3 FLT 10 12 11 R325 C316 R323 C317 R322 R324 R3...

Page 15: ...tion to case CA Thermal coefficient from case to ambient air C W Figure 2 4 Maximum Power Dissipation vs Free Air Temperature 2 1 5 1 0 55 25 5 Maximum Power Dissipation W MAXIMUM POWER DISSIPATION vs...

Page 16: ...EVM Component Placement 2 8 Evaluation Module Layout 2 6 EVM Component Placement Figure 2 5 shows component placement for the EVM board Figure 2 5 EVM Component Placement...

Page 17: ...EVM Board Layout 2 9 Evaluation Module Layout 2 7 EVM Board Layout Figures 2 6 and 2 7 show the EVM top and bottom board layouts respectively Figure 2 6 EVM Board Layout Top...

Page 18: ...EVM Board Layout 2 10 Evaluation Module Layout Figure 2 7 EVM Board Layout Bottom...

Page 19: ...gns that can be found in most operational amplifier design books Topic Page 3 1 Schematic Conventions 3 2 3 2 Inverting Amplifier 3 2 3 3 Noninverting Amplifier 3 3 3 4 Differential Amplifier 3 4 3 5...

Page 20: ...supplies Basic setup is done by choice of input and feedback resistors The transfer function for the circuit as shown is VOUT VIN R112 R109 To cancel the effects of input bias current set R105 R112 R1...

Page 21: ...configured as shown provides a low impedance reference for the circuit at about 1 2 V1 in a 3 V system Another option is to adjust resistors R113 and R111 for the desired VREF1 voltage The formula for...

Page 22: ...impedance reference for the circuit at about 1 2 V1 in a 3 V system Another option is to adjust resistors R111 and R113 for the desired VREF1 voltage The formula for calculating VREF1 is VREF1 1 24 V...

Page 23: ...Figure 3 4 Sallen Key Low Pass Filter Wwith Dual Supply Using Area 200 C206 C207 C209 C210 V2 V2 V2 GND2 V2 Power Supply Bypass 14 1 4 3 2 V2 V2 R212 C215 R216 C211 R221 R220 R218 R219 R217 R215 C212...

Page 24: ...nd nC Note that capacitors should be used for components R201 and R205 and a resistor for C201 The transfer function for the circuit as shown is VOUT VIN f fo 2 1 j Q f fo f fo 2 VREF2 Where fo 1 2p m...

Page 25: ...3 A2OUT 1 2 Dual Op Amp A201 A202 A203 A204 R206 C202 R207 C203 R204 R203 R202 R201 R209 C204 C201 B2OUT 1 2 Dual Op Amp B201 B202 B204 B203 R211 C R A U202 R213 Voltage Reference U201A U201B V2 VREF2...

Page 26: ...ction for the circuit as shown is V OUT V IN 1 2R212 R220 R212 R221 VREF2 Where R212 R206 and R221 R203 To cancel the effects of input bias current set R217 R212 R220 and set R202 R206 R203 or use a 0...

Page 27: ...R206 C202 R207 C203 R204 R203 R201 R202 R209 C204 C201 B2OUT 1 2 Dual Op Amp B201 B202 B204 B203 R211 C R A U202 R213 Voltage Reference U201A U201B V2 VREF2 1 24 V R210 13 11 12 Vin Jumper Jumper R205...

Page 28: ...red as a quad operational amplifier instrumentation amplifier using a dual power supply Basic setup is done by choice of input and feedback resistors The transfer function for the circuit as shown is...

Page 29: ...R313 R315 R311 C307 C309 B3 OUT B301 B302 B303 B304 U301B C306 R316 B3 FLT 10 12 11 R325 C316 R323 C317 R322 R324 R326 R327 R329 R328 C318 C319 C3 OUT C301 C302 C303 C304 U301C C320 R330 CD3 SD 9 16...

Page 30: ...3 12 Example Circuits...

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