参考设计
(14)
Altera Arria V GZ FPGA Discrete Power Solution Reference Design
PMP9357: The PMP9357 reference design is a complete power solution for Altera's Arria V series FPGAs. This design uses several TPS54620 synchronous step down converters, LDOs, and a DDR termination regulator to provide all the necessary rails to power the FPGA. To provide correct power sequencing, a UCD90120A power supply sequencer/monitor is used and can be controlled through I2C.
Reference Design using TMS320C6657 to Implement Efficient OPUS Codec Solution
TIDEP0036: The TIDEP0036 reference design provides an example of the ease of running TI optimized Opus encoder/decoder on the TMS320C6657 device. Since Opus supports a a wide range of bit rates, frame sizes and sampling rates, all with low delay, it has applicability for voice communications, networked audio and even high performance audio processing application. This design also highlights the performance improvements achieved when implementing the Opus codec on a DSP vs. a general purpose processor, like ARM. Depending upon the level of optimization of the code running on the genral purpose processor, implementing the Opus Codec on a C66x TI DSP core can have 3X the performance of an ARM CORTEX A-15 implementation. TMS320C66x DSPs support both audio and video codecs.
Data Acquisition for MUX and Step Inputs, 18 bits, 1uS Full Scale Response Reference Design
TIPD112: This TI Verified Design is a high performance data acquisition system (DAQ) using an 18-bit SAR ADC, ADS8881 at a throughput of 1MSPS. This design has been optimized to provide 18-bit settling performance for a Full Scale Step Input signal, thus leading to excellent system linearity. Such an input stimulus is more applicable in MUXed applications for transition between channels with different input voltages. The input driver for the ADC uses the OPA350 for high bandwidth (small & large signal), output current drive and linear rail-to-rail input and output operation. The reference buffer drive utilizes a composite buffer made out of THS4281 & OPA333 to get the desired performance at lowest power consumption. This DAQ block achieves a ±2.5LSB INL performance for a total power consumption of less than 70mW. See more TI Precision Designs
Wide Bandwidth Optical Front-end Reference Design
TIDA-00725: This reference design implements and measures a complete 120MHz wide bandwidth optical front end comprising a high speed transimpedance amplifier, fully differential amplifier, and high speed 14-bit 160MSPS ADC with JESD204B interface. Hardware and software are provided to evaluate the performance of the system in response to high speed optical pulses generated from the included laser driver and diode for applications including optical time domain reflectrometry (OTDR).
16-bit 400KSPS 4-Ch. Multiplexed Data Acquisition Ref Design for High Voltage Inputs, Low Distortion
TIPD151: This TI Verified Design implements a 16-bit, differential 4-channel multiplexed data acquisition system at 400KSPS throughput for high voltage differential input of ±20 V (40 Vpk-pk) industrial applications. The circuit is realized with a 16-bit successive-approximation-resistor (SAR) analog-to-digital converter (ADC), a precision high voltage signal conditioning front end, and a 4-channel differential multiplexer (MUX). The design details the process for optimizing the precision high voltage front end drive circuit using the OPA192 and OPA140 to achieve excellent dynamic performance with the ADS8864.
Synchronizing Multiple JESD204B ADCs for Emitter Position Location Reference Design
TIDA-00467: A common technique to estimate the position of emitters uses the amplitude and phase shift data of a signal derived from an array of spatially distributed sensors. For such systems, it is important to guarantee a deterministic phase relationship between the sensors to minimize errors in the actual measured data. This application design will discuss how multiple Analog to Digital Converters (ADCs) with a JESD204B interface can be synchronized so that the sampled data from the ADCs are phase aligned.
