Texas Instruments ADS1625 EVM User Manual Download Page 44

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DOCUMENTCONTROL #

U4A

OPA2822U

U4B

OPA2822U

C13

22pF

C15

0.1uF

+6V

C64

.01uF

-6V

C14

0.1uF

C19

22pF

AINP

AINN

C36

390pF

R38

R39

C68
22uF

C65

0.1uF

VCM

R31

49.9R

R32

49.9R

C35

100pF

C33

100pF

AIN

R12
392

R17
392

R22

392

R13
392

R28

392

AIN

C11

10uF

C18

10uF

R14

49.9R

AIN

AIN_N

AGND

C25

.01uF

ADS1625 / 26 Analog Input

Joe Purvis

6455116

All manuals and user guides at all-guides.com

Summary of Contents for ADS1625 EVM

Page 1: ...ADS1625 and ADS1626 EVM December 2003 Data Acquistion User s Guide SLAU123 All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 2: ...to use such products or services or a warranty or endorsement thereof Use of such information may require a license from a third party under the patents or other intellectual property of the third pa...

Page 3: ...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 responsibility to take a...

Page 4: ...ty as to the load specification please contact a TI field representative During normal operation some circuit components may have case temperatures greater than 70 C The EVM is designed to operate pro...

Page 5: ...This Manual This document contains the following chapters Chapter 1 EVM Overview Chapter 2 Digital Interface Chapter 3 Power Distribution Chapter 4 Getting the Most From Your EVM Chapter 5 EVM BOM ADS...

Page 6: ...822 SBOS188A FCC Warning This equipment is intended for use in a laboratory test environment only It gen erates uses and can radiate radio frequency energy and has not been tested for compliance with...

Page 7: ...ge Indication 2 3 2 1 5 Interrupt Source 2 3 2 1 6 Base Address 2 3 2 1 7 Base Address and Chip Select 2 3 2 2 External Interface 2 4 2 3 Data Connector Pinout 2 5 2 3 1 Control Connector Pinout 2 5 3...

Page 8: ...ternal Power and Ground Layers 5 11 5 3 Bottom Tracking Layer 5 12 Tables 1 1 Analog Interface 1 2 1 2 Selection Between Internal External Reference 1 3 1 3 External Reference 1 3 1 4 Modulator Clock...

Page 9: ...EVM Overview Topic Page 1 1 Features 1 2 1 2 Introduction 1 2 1 3 Analog Interface 1 2 1 4 Analog Input 1 3 1 5 External Reference 1 3 1 6 Modulator Clock 1 4 Chapter 1 All manuals and user guides at...

Page 10: ...adapted to various host platforms 1 3 Analog Interface The analog interface consists of the following subsections Analog input External reference Modulator clock Each portion of the analog interface c...

Page 11: ...ential signal is routed via W1 and W5 which enables the user to provide an external signal 1 5 External Reference The selection between the device s internal reference and an external reference is mad...

Page 12: ...n the modulator clock as part of the analog section Two options are available The clock can either be supplied via the onboard 40 MHz oscillator or externally via J5 This option is useful for low jitt...

Page 13: ...This chapter describes the EVM digital interface consists of the following subsections Topic Page 2 1 Board Level Control 2 2 2 2 External Interface 2 4 2 3 Data Connector Pinout 2 5 Chapter 2 All ma...

Page 14: ...FO 2 Table 2 2 FIFO Settings FIFO 2 FIFO 1 FIFO 0 FIFO Buffer Level 0 0 0 0 0 0 1 2 0 1 0 4 0 1 1 6 1 0 0 8 1 0 1 10 1 1 0 12 1 1 1 14 More information on the operation and use of the FIFO can be foun...

Page 15: ...cognize either By using W11 the user can choose either rising edge interrupts or falling edge interrupts 2 1 6 Base Address The EVM can be mapped into a memory location by setting one of four possible...

Page 16: ...form The interface card that is available at this time is the 5 6K interface card http focus ti com lit ug slau104 slau104 pdf This card enables any TMS320C5000 DSP Platform or TMS320C6000 DSP Platfor...

Page 17: ...D12 26 IO Ground 27 D13 28 IO Ground 29 D14 30 IO Ground 31 D15 32 IO Ground 33 D16 34 IO Ground 35 D17 36 IO Ground 37 Not Connected 38 IO Ground 39 Not Connected 40 IO Ground 2 3 1 Control Connector...

Page 18: ...2 6 All manuals and user guides at all guides com...

Page 19: ...oltages is to use the power connector P4 J4 and derive the voltages elsewhere preferably via linear supplies The pinout for this connector is shown in Table 3 1 Table 3 1 Power Connector P4 J4 Signal...

Page 20: ...3 2 All manuals and user guides at all guides com...

Page 21: ...Getting the Most From Your EVM Generally the user can take two hardware directions with the EVM Topic Page 4 1 Stand Alone EVM 4 2 4 2 DSP Interface 4 2 Chapter 4 All manuals and user guides at all g...

Page 22: ...as shown in Figure 2 1 The example program uses the driver files created with the Data Converter Plug in of Code Composer Studio which can be downloaded from the TI website at http www ti com sc dcpl...

Page 23: ...and 2 of this User s Guide Additionally set the jumper W11 to position 2 3 to configure the interrupt for the rising edge As described in Chapter 2 paragraph 2 1 5 Apply power to the DSP starter kit a...

Page 24: ...4 3 CCS Project Open Dialog Once the project is open expand the project tree by clicking on the in front of it and expand the source files as well The project window should look like the one in Figur...

Page 25: ...source file by double clicking on the file name in the project view and scroll down to the line where the read command for the ADS1625 is issued dc_rblock function This line reads issue a read block c...

Page 26: ...it to r_buffer J Acquisition Buffer Size This is the size of the acquisition buffer you are using on your target board In the case of the sample program the size of the r_buffer is defined with the s...

Page 27: ...Data Size 1 Sampling Rate For the sample program set it to 5000000 5 MHz More information on the different settings can be found in the help file of Code Composer Studio Once all settings are entered...

Page 28: ...DSP Interface 4 8 Figure 4 7 CCS Window With Graph All manuals and user guides at all guides com...

Page 29: ...and Schematics This chapter contains the bill of material EVM layouts and the schematics for the ADS1625 26 Topic Page 5 1 EVM Bill of Materials 5 2 5 2 ADS1625 26 EVM Layout Details 5 10 5 3 ADS1625...

Page 30: ...onic ECJ 0EB1E103K 32 0 1 F C12 C14 C15 C38 Capacitor 0 1 F 25 V ceramic X7R 0603 Panasonic ECJ 1VB1E104K C15 C38 C44 C46 ceramic X7R 0603 C44 C46 C49 C50 C49 C50 C57 C65 C57 C65 C67 C70 C67 C70 C73 C...

Page 31: ...r RN732ALTD9091B25 1 10 K RP6 Resnet 16 pos isolat 10 k SOIC Bourns 2NBS16 TJ1 103 7 10 K R4 R20 R36 R43 R45 R48 R49 Resistor 10 k 1 8 W 5 0805 SMD Panasonic ERJ 6GEYJ103V 1 10 K RV2 Trimpot 10 k 4 MM...

Page 32: ...nasonic ECG ELJ SA221KF 1 390 pF C36 Capacitor ceramic 390 pF 50V NP0 0805 BC Components 0805N391J500NT 17 392 R R6 R7 R8 R9 R10 R12 R13 R17 R21 R22 R23 R25 R26 R27 R28 R29 R30 0805 Resistor 0 1 toler...

Page 33: ...BVR 2 U7 U9 IC SGL 2 in ex or gate SOT23 5 Texas Instruments SN74AHC1G86DBVR 1 U11 IC quad 2 in pos or gate 14TSSOP Texas Instruments SN74AHC32PWR 1 U8 IC dual edg trg DTYP F F 14TSSOP Texas Instrumen...

Page 34: ...C57 C65 C67 C70 C67 C70 C73 C75 C73 C75 C76 C78 C80 C81 C89 C93 C95 C97 C98 C100 C102 C103 C104 C105 C106 C107 C108 C112 5 0 R R5 R11 R34 R35 R40 Resistor 0 1 16W 5 0402 SMD Panasonic ECG ERJ 2GE0R00X...

Page 35: ...0 k 4 MM top adj SMD Bourns Inc 3224W 1 103E 9 10 F C11 C18 C27 C30 C59 C60 C71 C72 C84 Capacitor 10 F 10 V ceramic F 0805 Panasonic ECJ 2FF1A106Z 4 10 F C2 C4 C29 C31 Capacitor 10 F 16 V ceramic X5R...

Page 36: ...392 R Holsworthy 279 RN73CA 392R 1 ADS1626 PWB 6455115 1 U6 IC 16 Bit 1 25 MSPS ADC 64 TQFP W FIFO Texas Instruments ADS1626IPAPT 1 SW1 Switch dip 8 pos halh pitch SMT ITT Industries TDA08H0SK1 2 J1 J...

Page 37: ...te 14TSSOP Texas Instruments SN74AHC32PWR 1 U8 IC dual edg trg DTYP F F 14TSSOP Texas Instruments SN74AHC74PWR 3 U12 U13 U14 Octal buffers drivers with 3 state outputs Texas Instruments SN74AHC541PWR...

Page 38: ...ADS1625 26 EVM Layout Details 5 10 5 2 ADS1625 26 EVM Layout Details Figure 5 1 Top Tracking Layer All manuals and user guides at all guides com...

Page 39: ...ADS1625 26 EVM Layout Details 5 11 EVM BOM ADS1625 26 EVM Layouts and Schematics Figure 5 2 Internal Power and Ground Layers All manuals and user guides at all guides com...

Page 40: ...ADS1625 26 EVM Layout Details 5 12 Figure 5 3 Bottom Tracking Layer All manuals and user guides at all guides com...

Page 41: ...VM Schematics 5 13 EVM BOM ADS1625 26 EVM Layouts and Schematics 5 3 ADS1625 26 EVM Schematics The schematics are shown on the following pages All manuals and user guides at all guides com a l l g u i...

Page 42: ...rence D09 D08 D11 D10 D12 D13 D15 D14 D16 D17 B00 B01 B02 B03 B04 B05 B06 B07 B08 B09 B10 B11 B12 B13 B14 B15 B16 B17 B_OTR B_DRDY OTR DRDY D00 D01 D02 D03 D04 D05 D06 D07 Data bus buffers REFEN PD RE...

Page 43: ...46 0 1uF C47 1uF C49 0 1uF C51 1uF C50 0 1uF C52 1uF C72 10uF C76 0 1uF C84 10uF C73 0 1uF C67 0 1uF C75 0 1uF C38 0 1uF L4 220uH R44 2 2R C98 0 1uF C26 22uF C82 22uF C83 22uF C71 10uF IO_GND IO_GND I...

Page 44: ...22pF C15 0 1uF 6V C64 01uF 6V C14 0 1uF C19 22pF AINP AINN C36 390pF R38 1K R39 1K C68 22uF C65 0 1uF VCM R31 49 9R R32 49 9R C35 100pF C33 100pF AIN R12 392 R17 392 R22 392 R13 392 R28 392 AIN 1 2 3...

Page 45: ...uF R10 392 6V 6V R23 392 R29 392 VREFP VREFN C60 10uF 6 5 7 U3B OPA2822U 6 5 7 U2B OPA2822U R24 12 1K R19 3 01K R25 392 R30 392 TO ANALOG INPUT CIRCUIT VMID 3 2 1 8 4 U3A OPA2822U 3 2 1 8 4 U2A OPA282...

Page 46: ...1 A1 2 A2 3 A3 4 A4 5 A5 6 A6 7 A7 8 A8 9 GND 10 Y8 11 Y7 12 Y6 13 Y5 14 Y4 15 Y3 16 Y2 17 Y1 18 OE2 19 VCC 20 U13 SN74AHC541 OE1 1 A1 2 A2 3 A3 4 A4 5 A5 6 A6 7 A7 8 A8 9 GND 10 Y8 11 Y7 12 Y6 13 Y5...

Page 47: ...4 14 12 12 10 10 8 8 6 6 4 4 2 2 SW1 DIP_SWITCH_8POS HOST_CSa ADDR_VALID ADDR_VALID GND 3 Vcc 5 U10B SN74AHC1G04 C97 0 1uF 9 10 8 A B Y U11C SN74AHC32 4 5 6 A B Y U11B SN74AHC32 12 13 11 A B Y U11D SN...

Page 48: ...F C99 1uF C96 47uF IO_GND C40 0 1uF C69 47uF C63 47uF C70 0 1uF 6V 6V VA L2 220uH L1 220uH W8 5VD VA 1 2 3 4 5 6 7 8 9 10 J4 P4 VA VA 5VD IO_GND1 R35 0R DGND IO_GND MOD_AGND R40 0R AGND1 AVDD DVDD3 0V...

Page 49: ...Business Center Lane 2301 Yishan Rd Minhang District Shanghai China Sales Direct 86 21 6401 6692 Email amall ameya360 com QQ 800077892 Skype ameyasales1 ameyasales2 Customer Service Email service ame...

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