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Texas Instruments SLOU061A manual

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Table of contents for the manual

  • Page 1

    April 2001 Mixed-Signal Products User ’ s Guide SLOU061A[...]

  • Page 2

    IMPORT ANT NOTICE T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify , before placing orders, that information being relied on is current and complete. All product[...]

  • Page 3

    iii Chapter Title — Attribute Reference Preface Related Documentation From T exas Instruments Amplifiers and Comparators Data Book (literature number SLOD002). This data book contains data sheets and other information on the TI operational amplifiers that can be used with this evaluation module. Power Supply Circuits Data Book (literature number [...]

  • Page 4

    iv[...]

  • Page 5

    Running Title — Attribute Reference v Chapter Title — Attribute Reference Contents 1 Introduction 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Design Features 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

  • Page 6

    Running Title — Attribute Reference vi Figures 2 – 1 Area 100 Schematic — Single Device, SOIC (8-pin) 2-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 2 Area 200 Schematic — Dual Device, SOIC (14-pin) 2-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 3 Area 300 Schematic — Quad Device, SO[...]

  • Page 7

    1-1 Introduction Introduction This user ’ s guide describes the universal operational amplifier single, dual, quad (SOIC) evaluation module (EVM) with shutdown (SLOP248). The EVM simplifies evaluation of T exas Instruments surface-mount op amps with or without shutdown feature. T opic Page 1.1 Design Features 1–2 . . . . . . . . . . . . . . . .[...]

  • Page 8

    Design Features 1-2 Introduction 1.1 Design Features The EVM board design allows many circuits to be constructed easily and quickly . There are three circuit development areas on the board, and each uses IC amplifiers in the SOIC package. Area 100 is for a single operational amplifier (op amp), with or without shutdown. It also features offset null[...]

  • Page 9

    2-1 Evaluation Module Layout Evaluation Module Layout This chapter shows the universal operational amplifier single, dual, quad (SOIC) evaluation module (EVM) with shutdown board layout, schematics of each area, and describes the relationships between the three areas. T opic Page 2.1 Physical Considerations 2 – 2 . . . . . . . . . . . . . . . . .[...]

  • Page 10

    Physical Considerations 2-2 Evaluation Module Layout 2.1 Physical Considerations The EVM board has three circuit development areas. Each area can be separated from the others by breaking along the score lines. The circuit layout in each area supports an op amp package, voltage reference, and ancillary devices. The op amp package is unique to each a[...]

  • Page 11

    Physical Considerations 2-3 Evaluation Module Layout 2.2 Area 100 — Single Device SOIC Area 100 uses 1xx reference designators, and is compatible with a single op amp, with or without shutdown, packaged as an 8-pin SOIC. This surface-mount package is designated by a D suffix in TI part numbers, as in TxxxxCD, TxxxxID, etc. Offset nulling can be e[...]

  • Page 12

    Physical Considerations 2-4 Evaluation Module Layout 2.3 Area 200 — Dual Device SOIC Area 200 uses 2xx reference designators, and is compatible with dual op amps, with or without shutdown, packaged as an 8-pin (without shutdown) or 14-pin (with shutdown) SOIC. This package is designated by a D suffix in TI part numbers, as in TxxxxCD. When using [...]

  • Page 13

    Physical Considerations 2-5 Evaluation Module Layout 2.4 Area 300 — Quad Device SOIC Area 300 uses 3xx reference designators, and is compatible with quad op amps, with or without shutdown, 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 TxxxxI[...]

  • Page 14

    Physical Considerations 2-6 Evaluation Module Layout Figure 2 – 3. Area 300 Schematic — Quad Device SOIC (16 pin) C313 C314 C31 1 C312 V3+ V3 – V3+ GND3 V3 – Power Supply Bypass + – 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 FL T AB3/SD 8 + – [...]

  • Page 15

    General Power Dissipation Considerations 2-7 Evaluation Module Layout 2.5 General Power Dissipation Considerations For a given θ JA , the maximum power dissipation is shown in Figure 2 – 4 and is calculated by the following formula: P D T MAX – T A JA Where: P D = Maximum power dissipation of Txxxx IC (watts) T MAX = Absolute maximum junction [...]

  • 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 — To p[...]

  • Page 18

    EVM Board Layout 2-10 Evaluation Module Layout Figure 2 – 7. EVM Board Layout — Bottom[...]

  • Page 19

    3-1 Example Circuits Example Circuits This chapter shows and discusses several example circuits that can be constructed using the universal operational amplifier EVM. The circuits are all classic designs that can be found in most operational amplifier design books. T opic Page 3.1 Schematic Conventions 3 – 2 . . . . . . . . . . . . . . . . . . . [...]

  • Page 20

    Schematic Conventions 3-2 Example Circuits 3.1 Schematic Conventions Figures 3 – 1 through 3 – 6 show schematic examples of circuits that can be constructed using the universal operational amplifier EVM with shutdown. The components that are placed on the board are shown in bold. Unused components are blanked out. Jumpers and other changes are [...]

  • Page 21

    Noninverting Amplifier 3-3 Example Circuits 3.3 Noninverting Amplifier Figure 3 – 2 shows area 100 equipped with a single operational amplifier configured as a noninverting amplifier with single-supply power input. Basic setup is done by choice of input and feedback resistors. The transfer function for the circuit as shown is: V OUT V IN 1 R112 R[...]

  • Page 22

    Differential Amplifier 3-4 Example Circuits 3.4 Differential Amplifier Figure 3 – 3 shows area 100 equipped with a single operational amplifier configured as a differential amplifier using a voltage reference and single power supply . Basic setup is done by choice of input and feedback resistors. The transfer function for the circuit as shown is:[...]

  • Page 23

    Sallen-Key Low-Pass Filter 3-5 Example Circuits 3.5 Sallen-Key Low-Pass Filter Figure 3 – 4 shows area 200 equipped with a dual operational amplifier configured as a second-order Sallen-Key low-pass filter using dual-power supplies. Basic setup is done by proper choice of resistors R and mR, and capacitors C and nC. The transfer function is: V OU[...]

  • Page 24

    Sallen-Key High-Pass Filter 3-6 Example Circuits 3.6 Sallen-Key High-Pass Filter Figure 3 – 5 shows area 200 equipped with a dual operational amplifier configured as a second-order Sallen-Key high-pass filter using single-supply power input. Basic setup is done by proper choice of resistors R and mR, and capacitors C and nC. Note that capacitors [...]

  • Page 25

    Sallen-Key High-Pass Filter 3-7 Example Circuits Figure 3 – 5. Sallen-Key High-Pass Filter With Single 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 C21 1 R221 R220 R218 R219 R217 R215 C212 C213 A2OUT 1/2 Dual Op Amp A201 – A202 – A203+ A204+ + – R206 C202[...]

  • Page 26

    T wo Operational Amplifier Instrumentation Amplifier 3-8 Example Circuits 3.7 T wo Operational Amplifier Instrumentation Amplifier Figure 3 – 6 shows area 200 equipped with a dual operational amplifier configured as a two-operational-amplifier instrumentation amplifier using a voltage reference and single power supply . Basic setup is done by cho[...]

  • Page 27

    T wo Operational Amplifier Instrumentation Amplifier 3-9 Example Circuits Figure 3 – 6. T wo Operational Amplifier Instrumentation Amplifier Wwith Single 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 C21 1 R221 R220 R218 R219 R217 R215 C212 C213 A2OUT 1/2 Dual O[...]

  • Page 28

    Quad Operational Amplifier Instrumentation Amplifier 3-10 Example Circuits 3.8 Quad Operational Amplifier Instrumentation Amplifier Figure 3 – 7 shows area 300 equipped with a quad operational amplifier configured as a quad-operational-amplifier instrumentation amplifier using a dual power supply . Basic setup is done by choice of input and feedb[...]

  • Page 29

    Quad Operational Amplifier Instrumentation Amplifier 3-1 1 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 FL T AB3/SD 8 + – 7 5 6 R31[...]

  • Page 30

    3-12 Example Circuits[...]