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Texas Instruments THS4502EVM, Руководство пользователя

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Texas Instruments THS4502EVM Скачать руководство пользователя страница 26

5-2

Item

Distributor’s
Part Number

Manufacturer’s
Part Number

PCB

Qty.

Reference
Designator

SMD
Size

Description

17

Test points (red)

 

TP1, TP2

2

(Keystone)
5000

(Allied)
839−3600

18

Jack, banana receptacle,
0.25” diameter hole

 

J5, J7, J8

3

(HH Smith)
101

(Newark)
35F865

19

Connector, SMA PCB
Jack

 

J1, J2, J3, J4,
J6

5

(Amphenol)
901−144−8RFX

(Newark)
01F2208

20

Standoff, 4−40 Hex,
0.625” Length

 

 

4

(Keystone)
1804

(Allied)
839−2089

21

Screw, Phillips, 4−40,
0.250”

 

 

4

SHR−0440−016−SN

 

22

IC, THS4502

 

U1

1

(TI) THS4502DGN

 

23

Board, printed circuit

 

 

1

(TI) EDGE # 6439396

 

Figure 5−1. Top Layer 1 (Signals for THS4502EVM)

Содержание THS4502EVM

Страница 1: ...THS4502EVM June 2002 HPL User s Guide SLOU129...

Страница 2: ...t that any license either express or implied is granted under any TI patent right copyright mask work right or other TI intellectual property right relating to any combination machine or process in wh...

Страница 3: ...handling or use of the goods Please be aware that the products received may not be regulatory compliant or agency certified FCC UL CE etc Due to the open construction of the product it is the user s r...

Страница 4: ...there is uncertainty as to the load specification please contact a TI field representative During normal operation some circuit components may have case temperatures greater than 60 C The EVM is desig...

Страница 5: ...the THS4502EVM to determine the design techniques used in the evaluation board It is recommended that the user review the application note Fully Differential Amplifiers literature number SLOA054 to le...

Страница 6: ...e required to take whatever measures may be required to correct this interference Electrostatic Sensitive Components This EVM contains components that can potentially be damaged by electrostatic disch...

Страница 7: ...sheets slma004 slma002 pdf Application report literature number SLMA004 PowerPAD Made Easy http www s ti com sc psheets slma004 slma004 pdf Application report literature number SSYA008 Electrostatic D...

Страница 8: ...vi...

Страница 9: ...3 2 Using the THS4502EVM 2 1 2 1 Required Equipment 2 2 2 2 Power Supply Connection 2 2 2 3 Function Generator Setup 2 4 2 4 Signal Connections VIN 2 4 3 THS4502EVM Applications 3 1 3 1 Single Ended...

Страница 10: ...3 2 2 Signal Connections 2 4 3 1 Single Ended In Single Ended Out Utilizing Transformer 3 2 3 2 Single Supply Operation 3 3 3 3 Output of an AC Coupled Single Supply Application 3 3 5 1 Top Layer 1 S...

Страница 11: ...c diagrams EVM specifications details on connecting and using the EVM and a discussion of high speed amplifier design considerations This EVM enables the user to implement various circuits to clarify...

Страница 12: ...ation can be configured according to the application requirement VOCM direct input through TP1 Power down PD direct input through TP2 Output transformer T1 Footprints for antialiasing filter implement...

Страница 13: ...er 5 shows component locations The default configuration assumes a 50 signal source and contains a termination resistor R1 for the source Some components such as C8 C9 C11 C12 TP1 TP2 R10 T1 and J4 ar...

Страница 14: ...1 4...

Страница 15: ...ment It is recommended that the user connect the EVM as described in this section to avoid damage to the EVM or the THS4502 installed on the board Topic Page 2 1 Required Equipment 2 2 2 2 Power Suppl...

Страница 16: ...wire 2 2 Power Supply Connection Refer to Figure 2 1 1 Set the dual dc power supply to 5 V If available set the current limit on the dc power supply to 100 mA 2 Make sure the dual dc power supply is...

Страница 17: ...Power Supply Connection 2 3 Using the THS4502EVM Figure 2 1 Power Supply Connection for 5 Vdc...

Страница 18: ...ate a 1 MHz 0 5 V 1 VPP sine wave with no dc offset 4 Verify that the output is 1 MHz 0 5 V 1 VPP 5 Disable the function generator output before proceeding to the next step 6 Disconnect the cable from...

Страница 19: ...the user but many other cir cuits can be constructed The user is encouraged to experiment with different circuits exploring new and creative design techniques After all that is the function of an eval...

Страница 20: ...o conditions is met R11 is installed and the measuring instrument is set to 1 M input impedance or R11 is not installed and the measuring instrument has an input impedance of 50 Figure 3 1 Single Ende...

Страница 21: ...7 is a second input to avoid confusion about whether a coupling capacitor is actually needed In fact there is no difference between single ended and fully differential inputs to the board except that...

Страница 22: ...Signal portion of the TI web page The designer should be aware that each individual feedback path is an invert ing path There is no noninverting gain circuit for fully differential amps The designer s...

Страница 23: ...The GND side of these capacitors should be located close to each other minimizing the differential current loops associated with differential output currents If poor high frequency performance is obs...

Страница 24: ...ending on PCB construction The requirements for thermal lands and thermal vias are detailed in http www s ti com sc techlit slma002 and http www s ti com sc techlit slma004 Finally all inputs and outp...

Страница 25: ...8 W 0805 C1 C2 R6 R7 4 Phycomp 9C08052A0R00JLHFT Garrett 9C08052A0R00JLHFT 8 Resistor 280 1 8 W 1 0805 R10 1 Phycomp 9C08052A2800FKHFT Garrett 9C08052A2800FKHFT 9 Resistor 340 1 8 W 1 0805 R8 R9 2 Phy...

Страница 26: ...a receptacle 0 25 diameter hole J5 J7 J8 3 HH Smith 101 Newark 35F865 19 Connector SMA PCB Jack J1 J2 J3 J4 J6 5 Amphenol 901 144 8RFX Newark 01F2208 20 Standoff 4 40 Hex 0 625 Length 4 Keystone 1804...

Страница 27: ...5 3 EVM Hardware Description Figure 5 2 Bottom Layer 2 Ground and Signal...

Страница 28: ...3 Vout R16 R3 402W R4 392 W C9 0 1mF VS VS C4 C2 0 C8 6 8mF VS TP5 C14 C6 C10 TP3 R7 0 C7 Vocm PD U1 THS4502 1 8 2 3 6 5 4 7 TP2 PD J5 VS R1 56 2 W R13 R8 340 W VS J2 Vout TP1 Vocm R2 374W J1 Vin J6 V...

Страница 29: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments THS4502EVM...

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