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THS6132EVM

November 2002

High Performance Linear Products

User’s Guide

SLOU154

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Summary of Contents for THS6132EVM

Page 1: ...THS6132EVM November 2002 High Performance Linear Products User s Guide SLOU154...

Page 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...

Page 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...

Page 4: ...here 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 design...

Page 5: ...provided for your protection Please read each caution and warning carefully FCC Warning This equipment is intended for use in a laboratory test environment only It gen erates uses and can radiate rad...

Page 6: ...the date of publication of this manual Texas Instruments applications apologizes if they change over time THS6132 data sheet SLLS543 Application report SLMA002 PowerPAD Thermally Enhanced Package htt...

Page 7: ...2 1 3 EVM Default Configuration 1 2 2 Using the THS6132EVM 2 1 3 THS6132EVM Applications 3 1 3 1 Standard Gain Configuration 3 2 3 2 Active Termination 3 3 3 3 Receive Path Implementation 3 6 3 4 Hig...

Page 8: ...3 3 Implementation of the Receive Signal Path 3 6 3 4 ADSL Spectrum and High Pass Filter Response 3 7 3 5 Single Ended Amplifier Configuration 3 9 4 1 Top Layer 1 Signals for THS6132EVM 4 2 4 2 Inter...

Page 9: ...t includes a list of EVM features a brief description of the module illustrated with a series of schematic diagrams EVM specifications details on connecting and using the EVM and a discussion of high...

Page 10: ...R23 Short loop length for the power supply differential high frequency path C12 C14 1 2 THS6182EVM Operating Conditions Supply voltage range VCC 5 to 15 Vdc see the device data sheet Supply current IC...

Page 11: ...0 V H V H J7 VCC L FB1 C12 C7 C6 FB2 J5 VCC L 4 7 21 33 R28 TP9 JP1 V R24 R20 BIAS 1 GND VREF U1C THS6132 5 8 1 2 BIAS 2 6 9 TP8 R27 R21 TP10 JP2 V R25 R29 R22 TP10 JP3 V R26 R30 BIAS 3 7 10 VH VL 16...

Page 12: ...1 4...

Page 13: ...ection describes how to connect the THS6132EVM to test equipment It is recommended that the user connect the EVM as described in this section to avoid damage to the EVM or the THS6132 installed on the...

Page 14: ...ng input If the oscilloscope input is connected to J3 and the signal source is connected to J2 EVM channel 2 is also configured for a noninverting signal path When the oscilloscope s input impedance i...

Page 15: ...y other circuits can be constructed The user is encouraged to experiment with different circuits exploring new and creative design techniques Topic Page 3 1 Standard Gain Configuration 3 2 3 2 Active...

Page 16: ...here R2 R11 Series resistors R6 R7 R15 and R16 affect output voltage at J1 and J3 The designer needs to take the voltage divider law into account for their load impedance and R6 R7 R15 and R16 When a...

Page 17: ...ngs A very small resistance exists between the amplifier and the transformer This lowers the output voltage swing range required from the driver stage Proper matching impedance appears when looking fr...

Page 18: ...he values in Figure 3 2 are used in equation 4 the resulting voltage gain is 14 5 Because RG does not affect the value of the apparent output impedance of the circuit voltage gain can be adjusted by c...

Page 19: ...h of R3 and R12 and this can cause the amplifier to oscillate The snubber is utilized to eliminate this oscillation As a rule of thumb to select the proper snubber values select 6 Then select C5 C1 1...

Page 20: ...user should know their nominal line impedance characteristics and thus should be able to match them better Texas Instruments does have an EVM that contains a THS6062 ADSL receiver and this EVM can be...

Page 21: ...tween the two channels This helps but does not assure the signals are truly differential Figure 3 4 compares the frequency spectrum of ADSL to a simulation of the high pass filter on the THS6132EVM Fi...

Page 22: ...the other as an inverting circuit the gain of the noninverting channel is one greater than the other This gain difference can be eliminated by changing the feedback resistor value of the inverting sta...

Page 23: ...3 5 for example two dc coupled gain stages are formed by removing R9 and adding R4 and R14 The output impedance is changed to 75 by changing R6 and R15 to 24 9 There are many other possibilities Figu...

Page 24: ...805 C8 C10 C17 C18 4 AVX 8055C104KAT2A Garrett 08055C104KAT2A 7 Open 0805 R3 R4 R5 R12 R13 R14 6 8 Resistor 0 1 8 W 0805 R9 R18 R27 3 Phycomp 9C08052A0R00JLHFT Garrett 9C08052A0R00JLHFT 9 Resistor 100...

Page 25: ...llins SSC02SYAN Digi Key S9002 ND 21 Test point black TP5 TP6 TP7 3 Keystone 5001 Digi Key 5001K ND 22 Test points red TP1 TP2 TP3 TP4 TP8 TP9 TP10 TP11 8 Keystone 5000 Digi Key 5000K ND 23 Standoff 4...

Page 26: ...4 3 EVM Hardware Description Figure 4 2 Internal Plane Layer 2 Ground 1 Plane Figure 4 3 Internal Plane Layer 3 Power Plane...

Page 27: ...4 4 Figure 4 4 Bottom Layer 4 Ground and Signal...

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