Texas Instruments 45, 46, 27, 47, ADS5525 manual LED Operation

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Circuit Description

 

Table 4. Test Points

TP

DESCRIPTION

TP1

ADC common mode, input or output

 

depending on the setting of SW1, switch 4

TP3

THS4509 power down

TP4

ADC output enable

TP5

AGND

TP6

AGND

TP7

AGND

TP8

DGND

TP9

FPGA M0 pin; determines which FPGA logic

 

file to load

TP10

ADC SCLK

TP11

TPS75003 1.2 enable

TP12

TPS75003 2.5 enable

TP13

TPS75003 3.3 enable

3.2.7LED Operation

To give greater visibility into the EVM operations, two LEDs are provided, D3 and D4. On power up, D4 is asserted when a successful FPGA boot up is complete. For correct EVM operation, the LED should be asserted at all times. LED D3 is asserted when the ADC and FPGA are operating and decoding in DDR LVDS mode, and is not asserted when the ADC is functioning in CMOS mode. Furthermore, in either DDR LVDS mode or CMOS mode, LED D3 blinks when an ADC overrange condition occurs.

CAUTION

If LED D3 is blinking, the amplitude coming into the ADC input (J3 or J4) must be attenuated immediately; otherwise, damage to the ADC could occur.

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SLWU028B –January 2006 –Revised November 2006

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Contents Users Guide Submit Documentation Feedback Contents List of Figures Users Guide EVM Basic FunctionsEVM Lvds Output Mode Quick Start Default EVM Cmos Output Mode Quick StartSchematic Diagram Configuration OptionsDIP Switch SW1 PowerEVM Power Options GNDAgnd GND Dgnd GNDTHS4509 + ADS5545 EVM Performance Clock Input Digital OutputsOutput Connector J4 CLK GNDEye Diagram of Data on Header J4 Test Points LED Operation Custom Fpga Code Expansion SlotOptional USB SPI Interface PCB Layout Top LayerLayer 2, Ground Plane Layer 3, Power Plane #1 Layer 4, Power Plane #2 Layer 5, Ground Plane Layer 6, Bottom Layer Bill of Materials Bill of Materials ERJ-3GEY0R00V P0.0GCT-NDERJ-GE0R00X P0.0JCT-NDBill of Materials Qfnmod THS4509RGTTXCF16PFSG48 48PINBGAXILINX TPS75003RHLRPCB Schematics Schematics for the EVM are on the following pagesReset DrvddVCM +IN a+VCC VCCINP Venable Clkp ClkmDewonck Ctrlle IOL12N1/A3/RHCLK7 Mode Reset IOL10N3/LHCLK5VCCO1 VCCO3Vccint OE/RESET CLK Busy Clkout CclkDone Vccint Vccint ProgbSS3 Agnd EN1 SS1 Dgnd SW1 IN1 IS1 IN3 FB1OUT3 FB2 Dgnd FB3 EN3 EN2 SS2 SW2 IN2 IS2Fpga Power SUPPLY5V Drvdd + VCCVDD Outpu Tbuffer ADC Digital SUPPLY3.3VEvaluation BOARD/KIT Important Notice FCC Warning EVM Warnings and RestrictionsImportant Notice

ADS5525, 27, 47, 45, 46 specifications

Texas Instruments is a leader in the field of analog and mixed-signal semiconductors and offers a diverse portfolio of high-performance products. Among its notable offerings are the ADCs (Analog-to-Digital Converters) such as the TI 46, 45, 47, 27, and the ADS5525. These devices are engineered to meet the demanding requirements of various applications, including communications, industrial, and medical systems.

The Texas Instruments 46 series ADCs are recognized for their high speed and precision. They utilize a 14-bit architecture with sampling rates of up to 1.5 GSPS, which makes them ideal for high-frequency applications such as communications and instrumentation. One of the key features is their ability to support a wide input bandwidth, which allows for accurate conversions of high-frequency signals.

The 45 series, similar in architecture, excels in environments where power efficiency is paramount. These ADCs are designed to consume less power while maintaining high performance. They offer a flexible sampling rate, providing options for both lower and higher intensity applications. This versatility is essential for handheld and portable devices where battery life is crucial.

Moving on to the 47 family, these devices focus on achieving high dynamic range and low distortion. Their architecture includes sophisticated digital filter options, enhancing the capability of noise reduction and signal integrity. With an impressive signal-to-noise ratio, the 47 series finds its usage in systems where performance cannot be compromised, such as high-end audio and video applications.

The 27 series ADCs provide an excellent combination of high performance and low latency, making them suitable for real-time analysis in various scenarios. They are equipped with advanced data acquisition features and can communicate seamlessly with modern digital signal processors and microcontrollers.

Finally, the ADS5525 is a standout in the lineup, offering a 12-bit resolution at a maximum sampling rate of 125 MSPS. This device is designed for a range of applications, including medical imaging and ultrasound systems. It boasts features such as an integrated digital filter and multiple power-saving modes, making it versatile and efficient in terms of energy consumption.

In summary, Texas Instruments' ADC lineup, including the 46, 45, 47, 27, and ADS5525, offers numerous features and technologies, catering to a wide range of applications through their respective specifications of speed, power efficiency, dynamic range, and ease of integration. These devices illustrate Texas Instruments' commitment to providing innovative solutions in the analog and mixed-signal domain.
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