Manuale d’uso / di manutenzione del prodotto THS4012 del fabbricante Texas Instruments
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May 1999 Mixed-Signal Products User ’ s Guide SLOU041.
IMPORT ANT NOTICE T exas Instruments (TI) reserves the right to make changes to its products or to discontinue any semiconductor product or service without notice, and advises its customers to obtain the latest version of relevant information to verify , before placing orders, that the information being relied on is current.
iii Chapter Title—Attribute Reference Preface Related Documentation From T exas Instruments THS4012 DUAL LOW -NOISE HIGH-SPEED OPERA TIONAL AMPLIFIER (literature number SLOS216) This is the data sheet for the THS4012 operational amplifier integrated circuit that is used in the THS4012 evaluation module.
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Running Title—Attribute Reference v Chapter Title—Attribute Reference Contents 1 General 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Feature Highlights 1-2 .
Running Title—Attribute Reference vi Figures 1–1 THS4012 Evaluation Module 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2 THS4012 EVM Schematic — Noninverting Operation 1-4 . . . .
1-1 General General This chapter details the T exas Instruments (TI ) THS4012 dual high-speed operational amplifier evaluation module (EVM), SLOP230.
Feature Highlights 1-2 General 1.1 Feature Highlights THS4012 Dual High-Speed Operational Amplifier EVM features include: High Bandwidth — 75 MHz, –3 dB at ± 15 V CC and Gain = 2 ± 5-V to ± 15-.
Description 1-3 General 1.2 Description The TI THS4012 dual high-speed operational amplifier evaluation module (EVM) is a complete dual high-speed amplifier circuit.
THS4012 EVM Noninverting Operation 1-4 General 1.3 THS4012 EVM Noninverting Operation The THS4012 EVM is shipped preconfigured for dual-channel noninverting operation, as shown in Figure 1–2. Note that compensation capacitors C3 and C6 are not installed.
THS4012 EVM Noninverting Operation 1-5 General Any of the resistors on the EVM board can be replaced with a resistor of a different value; however , care must be taken because the surface-mount solder pads on the board are somewhat fragile and will not survive many desoldering/soldering operations.
Using the THS4012 EVM In The Noninverting Mode 1-6 General 1.4 Using the THS4012 EVM In The Noninverting Mode The THS4012 EVM operates from power-supply voltages ranging from ± 5 V to ± 15 V . As shipped, the EVM is configured for inverting operation and the gain is set to 4.
THS4012 EVM Inverting Operation 1-7 General 1.5 THS4012 EVM Inverting Operation Although the THS4012 EVM is shipped preconfigured for dual-channel noninverting operation, it can be reconfigured for inverting operation by making the following component changes: 1) Move resistor R3 to the R2 location and R5 to the R4 location on the board.
THS4012 EVM Inverting Operation 1-8 General The gain of the EVM can easily be changed to support a particular application by changing the ratio of resistors R6 and R4 (channel 1) and R14 and R12 (chan.
Using the THS4012 EVM In The Inverting Mode 1-9 General 1.6 Using the THS4012 EVM In The Inverting Mode The THS4012 EVM operates from power-supply voltages ranging from ± 5 V to ± 15 V .
THS4012 EVM Differential Input 1-10 General 1.7 THS4012 EVM Differential Input The THS4012 EVM is shipped preconfigured for dual-channel, single-ended noninverting operation. It can be reconfigured for single-channel, differential operation, either noninverting or inverting.
THS4012 EVM Differential Input 1-1 1 General The gain of the EVM can easily be changed to support a particular application by simply changing the ratio of resistors R6 and R5 (channel 1) and R14 and R.
THS4012 EVM Differential Input 1-12 General Figure 1–5. THS4012 EVM Schematic — Differential Input (Inverting Operation) C1 6.8 µ F –VCC 1 GND 2 +VCC 3 J2 C2 6.8 µ F –VCC +VCC – + U1:A THS4012 1 4 8 2 3 R4 1 k Ω R6 1 k Ω +VCC C3 x µ F R7 49.
THS4012 EVM Differential Input 1-13 General Any resistor on the EVM board can be replaced with a resistor of a different value; however , care must be taken because the surface-mount solder pads on the board are somewhat fragile and will not survive many desoldering/soldering operations.
Using the THS4012 EVM With Differential Inputs 1-14 General 1.8 Using the THS4012 EVM With Differential Inputs The THS4012 EVM operates from power-supply voltages ranging from ± 5 V to ± 15 V . Move resistors on the board as detailed above for either noninverting or inverting operation to configure the EVM for differential input operation.
THS4012 EVM Performance 1-15 General 1.10 THS4012 EVM Performance Figure 1–6 shows the typical frequency response of the THS4012 EVM using the noninverting configuration (G = 2). T ypical – 0.1 dB bandwidth is 25 MHz and – 3-dB bandwidth is 75 MHz with both a ± 15-V power supply and a ± 5-V power supply .
General High-Speed Amplifier Design Considerations 1-16 General 1.1 1 General High-Speed Amplifier Design Considerations The THS4012 EVM layout has been designed and optimized for use with high-speed signals and can be used as an example when designing THS4012 applications.
General PowerP AD Design Considerations 1-17 General 1.12 General PowerP AD Design Considerations The THS4012DGN IC is mounted in a special package incorporating a thermal pad that transfers heat from the IC die directly to the PCB. The PowerP AD package is constructed using a downset leadframe.
General PowerP AD Design Considerations 1-18 General 8) With these preparatory steps in place, the THS4012DGN IC is simply placed in position and run through the solder reflow operation as any standard surface-mount component. This results in a part that is properly installed.
General PowerP AD Design Considerations 1-19 General Correct PCB layout and manufacturing techniques are critical for achieving adequate transfer of heat away from the PowerP AD IC package. More details on proper board layout can be found in the THS4012 Low-noise Dual Differential Receiver data sheet (SLOS216).
1-20 General.
2-1 Reference Reference This chapter includes a complete schematic, parts list, and PCB layout illustrations for the THS4012 EVM. T opic Page 2.1 THS4012 EVM Complete Schematic 2–2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 THS4012 Dual High-Speed Operational Amplifier EVM Parts List 2–3 .
THS4012 EVM Complete Schematic 2-2 Reference 2.1 THS4012 EVM Complete Schematic Figure 2–1 shows the complete THS4012 EVM schematic. The EVM is shipped preconfigured for dual-channel, single-ended inverting operation.
THS4012 Dual High-Speed Operational Amplifier EVM Parts List 2-3 Reference 2.2 THS4012 Dual High-Speed Operational Amplifier EVM Parts List T able 2–1. THS4012 EVM Parts List Reference Description Size Manufacturer/Supplier Part Number C1, C2 Capacitor , 6.
THS4012 EVM Board Layouts 2-4 Reference 2.3 THS4012 EVM Board Layouts Board layout examples of the THS4012 EVM PCB are shown in the following illustrations.
THS4012 EVM Board Layouts 2-5 Reference Figure 2–3. THS4012 EVM PC Board Layout – Component Side.
THS4012 EVM Board Layouts 2-6 Reference Figure 2–4. THS4012 EVM PC Board Layout – Back Side.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Texas Instruments THS4012 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Texas Instruments THS4012 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Texas Instruments THS4012 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Texas Instruments THS4012 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Texas Instruments THS4012, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Texas Instruments THS4012.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Texas Instruments THS4012. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Texas Instruments THS4012 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
