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Texas Instruments 65MEVM manual

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Table of contents for the manual

  • Page 1

    1 EVM Overview 1.1 Features User's Guide SLAU189 – September 2006 ADS8364/65MEVM This user's guide describes the characteristics, operation, and use of the ADS8364/65MEVM 16-bit, parallel analog-to-digital converter evaluation module (EVM). A complete circuit description, a schematic diagram, and bill of materials is included. Contents [...]

  • Page 2

    www.ti.com 2 Introduction 3 Analog Interface 3.1 Analog Input – Channel A0 Introduction The ADS8364 and ADS8365 are high-speed, low-power, 6-channel, 16-bit A/D converters that operate from independent +5-V Avdd and Dvdd supplies. Internal buffer circuits powered from 3.3-V to 5.5-V BVdd supplies allow for mixed logic level operation without addi[...]

  • Page 3

    www.ti.com 3.2 Bipolar Input to Channel A0 Analog Interface NOTE: Components marked NI are NOT INSTALLED. Figure 1. Channel A0 Input Circuit This configuration allows single-ended signals of ± 2.5 V (+5 Vpp) to be applied to either input of channel A0 (J2 pin 1 or 3 referenced to pin 2). The input also can be applied to connector J4 (not shown) pi[...]

  • Page 4

    www.ti.com 3.3 Analog Input – Channel A1 3.4 Analog Inputs –Channels B0/B1 and C0/C1 4 Digital Interface Digital Interface The output from the buffer stage in each case applies 0-5 V to the CHA0(+) input when the applied signal is connected to J2 pin 1 or J4 pin 2. The applied signal is directed to the CHA0(-) input when connected via J2 pin 3 [...]

  • Page 5

    www.ti.com 4.1 Parallel Control 4.2 Parallel Data 4.3 GPIO/Control Options Digital Interface Jumpers W4 and W6 control the signals applied to A0, A1, A2, and CS. In the factory default mode, W6 is closed by means of a shunt jumper. The Ax and CS pins are controlled by the signals applied to J5 (top or bottom side). When used with either the 5-6K or[...]

  • Page 6

    www.ti.com 5 Power Supplies 5.1 Reference Voltages 6 EVM Operation Power Supplies Table 3. J1 Pinout and Functions Pin Number Signal Description J1.1 NAP Controls power-down options on the ADS8365 (only) using the NAP input pin J1.3 ADD Controls read options, when HI, address information can be read from the chip J1.5 HOLD_C# Active-low signal HOLD[...]

  • Page 7

    www.ti.com 6.1 Default Jumper Locations 7 EVM Bill of Materials, Assembly Drawing, and Schematic 7.1 Bill of Materials EVM Bill of Materials, Assembly Drawing, and Schematic The digital control signals can be applied directly to J1 and J5 (top or bottom side). The ADS8364/65MEVM can also be connected directly to the 5-6K Interface Board for use wit[...]

  • Page 8

    www.ti.com EVM Bill of Materials, Assembly Drawing, and Schematic Table 6. ADS8364/65MEVM Bill of Materials (continued) Designators Description Manufacturer Mfg. Part Number D1 D2 Green LED Chicago Miniature CMD15-21VGC/TR8 J1 J3–J5(Bottom 10 Pin, Dual Row, SMT Socket (20 Pos.) Samtec SSW-110-22-S-D-VS Side) J1 J3–J5 (Top Side) 10 Pin, Dual Row[...]

  • Page 9

    www.ti.com 7.2 Assembly Drawing 7.3 Circuit Schematics EVM Bill of Materials, Assembly Drawing, and Schematic Figure 3 shows the top layer of the ADS8364/65MEVM and provides quick access to component designator found on the PWB. Complete Gerber files are available on request. Figure 3. ADS8364/654MEVM Assembly Drawing The entire circuit schematic f[...]

  • Page 10

    1234 56 A B C D 6 5 4 3 2 1 D C B A ti 12500 TI Boulevard. Dallas, T exas 75243 Title: SHEET: OF: FILE: SIZE: DATE: REV: 14-Jul-2006 Drawn By: Engineer: Revision History REV ECN Number Approved mADS8364_2_SH1.Sch 1 2 3 J2 3 2 1 8 4 U1A OPA2132 +Vin -Vin R4 4.99K R2 4.99K R3 NI R1 4.99K W1 C1 33pF C4 NI Vref TP7 5 6 7 U1B OPA2132 R29 4.99K R25 4.99K[...]

  • Page 11

    1234 56 A B C D 6 5 4 3 2 1 D C B A ti 12500 TI Boulevard. Dallas, T exas 75243 Title: SHEET: OF: FILE: SIZE: DATE: REV: 14-Jul-2006 Drawn By: Engineer: 5 6 7 U2B OPA2340 3 2 1 8 4 U2A OPA2340 Vref AVdd TP8 C10 0.1uF C7 0.1uF C8 10uF A0+ A0- A1- A1+ B0+ B0- B1- B1+ C0+ C0- C1- C1+ DC_D0 DC_D1 DC_D2 DC_D3 DC_D4 DC_D5 DC_D6 DC_D7 DC_D8 DC_D9 DC_D10 D[...]

  • Page 12

    www.ti.com 8 Related Documentation From Texas Instruments Related Documentation From Texas Instruments 1. ADS8364, 250kHz, 16-Bit, 6-Channel Simultaneous Sampling Analog-to-Digital Converters data sheet ( SBAS219 ) 2. ADS8365, 250kHz, 16-Bit, 6-Channel Simultaneous Sampling Analog-to-Digital Converter data sheet ( SBAS362 ) 3. OPA2132, High-Speed F[...]

  • Page 13

    EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling th[...]

  • Page 14

    IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders[...]