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FEATURES
FULLY POPULATED EVM
PROVIDES FAST AND EASY PERFORMANCE
TESTING FOR THE ADS5120
DIFFERENTIAL TRANSFORMER-COUPLED
INPUT CONFIGURATION FOR EACH CHANNEL
EXTERNAL REFERENCE OPTION
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
DESCRIPTION
This user's guide describes the function and operation of the
ADS5120 evaluation module. It is designed for ease of use
when evaluating the high-speed Analog-to-Digital Converter
(ADC) ADS5120. The ADS5120 is an 8-channel, simulta-
neous sampling 10-bit A/D converter sampling at up to
40MSPS. The evaluation module is completely assembled
and provides a transformer-coupled input configuration for
each of the channels. The ADS5120 operates on a 1.8V
single supply. Optionally, the output logic buffers can be
configured for 3.3V supply.
www.ti.com
ADS5120EVM
SBAU078 – JUNE 2002
Copyright © 2002, Texas Instruments Incorporated

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Summary of Contents for Texas Instruments ADS5120EVM

  • Page 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date.
  • Page 2 ADS5120EVM OPERATIONAL PROCEDURE The ADS5120EVM provides a platform for evaluating the A basic setup procedure that can be used as a board ADS5120 ADC under various signal, reference, and supply confidence check is as follows: conditions.
  • Page 3: Circuit Description

    (J16, J17, and J20). Standby The ADC has individual standby control inputs for each of the eight output data buses. These are controlled by the two dip switches, S1 and S10. Table IV shows switch operation. ADS5120EVM www.ti.com SBAU078...
  • Page 4: Physical Description

    Table VI lists the parts used in constructing the EVM. PHYSICAL DESCRIPTION This section describes the physical characteristics and PCB layout of the EVM and lists the components used on the module. ADS5120EVM www.ti.com SBAU078...
  • Page 5 J14 J17 J19 J22 ADS5120 257_S-PBGA(GHK) ADS5120 OPA4227UA 14-SOP(D) OPA4227UA TPS79225 5 SOT-23(DBV) TPS79225DBVT SN74AVC16827(DGG) 56-TSSOP(DGG) SN74AVC16827(DGG) U8-U11 SWITCH 4POS_SMT SWITCH_4POS_SMT S1 S10 S11 S12 Stand Off Hex (1/4 x 0.5") 4-40 screw 1902CK-ND ALLIED TABLE VI. Parts List. ADS5120EVM www.ti.com SBAU078...
  • Page 6 FIGURE 1. EVM Schematic Diagram (1 of 5). ADS5120EVM www.ti.com SBAU078...
  • Page 7 FIGURE 2. EVM Schematic Diagram (2 of 5). ADS5120EVM www.ti.com SBAU078...
  • Page 8 FIGURE 3. EVM Schematic Diagram (3 of 5). ADS5120EVM www.ti.com SBAU078...
  • Page 9 CHH8 CHH9 1A10 1Y10 – AING CHG0 AING – AING- CHG1 AING+ CHG2 AING+ AING+ CHG3 CHG4 CHG5 CHG6 CHG7 CHG8 CHG9 2A10 2Y10 1/OE1 1/OE2 CHG(0..9) 2/OE1 2/OE2 FIGURE 4. EVM Schematic Diagram (4 of 5). ADS5120EVM www.ti.com SBAU078...
  • Page 10 FIGURE 5. EVM Schematic Diagram (5 of 5). ADS5120EVM www.ti.com SBAU078...
  • Page 11 FIGURE 6. EVM Layer 1: Top Layer with Silk-Screen. ADS5120EVM www.ti.com SBAU078...
  • Page 12 FIGURE 7. EVM Layer 2: Ground Plane I. ADS5120EVM www.ti.com SBAU078...
  • Page 13 FIGURE 8. EVM Layer 3: Inner Layer I. ADS5120EVM www.ti.com SBAU078...
  • Page 14 FIGURE 9. EVM Layer 4: Split Power Plane I. ADS5120EVM www.ti.com SBAU078...
  • Page 15 FIGURE 10. EVM Layer 5: Inner Layer II. ADS5120EVM www.ti.com SBAU078...
  • Page 16 FIGURE 11. EVM Layer 6: Split Power Plane II. ADS5120EVM www.ti.com SBAU078...
  • Page 17 FIGURE 12. EVM Layer 7: Ground Plane II. ADS5120EVM www.ti.com SBAU078...
  • Page 18 FIGURE 13. EVM Layer 8: Bottom Layer with Silk Screen. ADS5120EVM www.ti.com SBAU078...
  • Page 19 EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided may not be complete in terms of required design–, marketing–, and/or manufacturing–related protective...
  • Page 20 EVM User’s Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright  2002, Texas Instruments Incorporated ADS5120EVM www.ti.com SBAU078...
  • Page 21: Important Notice

    TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products...
  • Page 22 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments ADS5120EVM...