TLC5540/TLC5510/TLC5510A Evaluation Module User’s Guide July 2002 Mixed-Signal Products SLAU007D
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Information About Cautions and Warnings Preface Read This First About This Manual This user’s guide serves as a reference book for the TLC5540/ TLC5510/TLC5510A. This document provides information to assist managers and hardware / software engineers in application development.
Related Documentation From Texas Instruments Related Documentation From Texas Instruments The following documents may be ordered by contacting the Texas Instruments Product Information Center at one of the numbers listed on the next page, or, they may be downloaded at: http://www–s.ti.com/sc/docs/psheets/pids2.htm TLC5510/TLC5510A Data Sheet ( literature number SLAS095 ) contains electrical specifications, available temperature options, general overview of the device, and application information.
Running Title—Attribute Reference Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2 Power Supply Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 2 Circuit Description .
Running Title—Attribute Reference Figures 2–1 3–1 3–2 3–3 3–4 3–5 Board Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EVM Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EVM Board Layer 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . EVM Board Layer 2 . . . . . . .
Chapter 1 Overview This chapter gives an overview of the TLC5540/TLC5510/TLC5510A evaluation module (EVM). Topic Page 1.1 Power Supply Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2 1.2 Power Supply Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purpose 1.1 Purpose The TLC5540/TLC5510/TLC5510A evaluation module (EVM) provides a platform for lab prototype evaluation of the Texas Instruments TLC5540/ TLC5510/TLC5510A 8-bit, high-speed analog-to-digital converters. Since practical operation can be acheived with a clock speed in excess of 40 MHz, the circuit layout is critical and does not lend itself to classic breadboarding techniques. In fact, proper operation requires use of surfacemount components. 1.
Chapter 2 Circuit Description This chapter describes the EVM circuit and its operation. Topic Page 2.1 EVM Analog Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2 2.2 Digital Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4 2.3 Clock Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4 2.4 Board Schematic . . . . . . . . . . . . .
EVM Analog Input 2.1 EVM Analog Input The EVM analog input signal is applied to BNC connector J4 by one of four methods: 2.1.1 Direct Amplifier input (dc-coupled) Amplifier input (ac-coupled) User supplied input Direct Input To route the signal directly to the TLC5540/TLC5510/TLC5510A input, solder jumpers from E7 to E8 and from E23 to E12. This provides a 50-Ω load (R5) at input connector J4. The input signal must be dc-biased to the specifications defined by the data sheet.
EVM Analog Input The amplifier output circuit is connected to the TLC5540/TLC5510/ TLC5510A by soldering a jumper between terminals E10 and E12. The amplifier input can be either dc-coupled or ac-coupled to the ADC input. Table 2–1 shows the jumpers required to select either input coupling method. Table 2–1. Amplifier Input Coupling 2.1.3 Coupling Jumper Terminals dc E3 to E4 ac E1 to E2 Amplifier Input, AC-Coupled Potentiometer R2 controls the dc input bias for amplifier ac-coupled inputs.
Digital Output 2.1.6 User Supplied Input Circuit A breadboarding area allows the use of custom input filters or other signal conditioning circuits. To route the input signal to the breadboarding area (terminal E24), solder a jumper between terminals E5 and E6. To route the signal from the breadboard area (terminal E25) to the TLC5540/TLC5510/TLC5510A input, solder a jumper between terminals E11 and E12.
Figure 2–1.
Board Schematic 2-6
Chapter 3 Physical Description This chapter describes the physical characteristics and PCB layout of the EVM and lists the components used on the module. Topic Page 3.1 Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2 3.2 Board Layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3 3.3 Part Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Board Layout 3.1 Board Layout Figure 3–1 shows the EVM board layout. Figure 3–1.
Board Layers 3.2 Board Layers Figures 3–2 through 3–5 show the EVM board layers. Figure 3–2.
Board Layers Figure 3–3.
Board Layers Figure 3–4.
Board Layers Figure 3–5.
Part Descriptions 3.3 Part Descriptions Table 3–1 lists and describes the EVM parts. C2 and E9 are not used. Table 3–1. Part Descriptions Quantity Reference Description 11 C4, C7, C11 C13, C15, C16, C17, C20, C23, C25, C26 0.1 µF capacitor, 50 V, 10%, COG, SMD, size 1206 13 C1, C3, C6, C8–C10, C12, C18, C19, C21, C22, C24, C27 4.
3-8
