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  • Forum Post: PCM1704 specifications

    Kurt G
    I'm really hoping somebody can help me. I need to know the input impedance/capacitance for the inputs of the PCM1704U, particularly BCLK, WCLK and DATA. An IBIS model for this chip would also be extremely helpful. I have checked the datasheet as well as every other resource related to this chip...
    on Jan 13, 2010

  • Forum Post: PCM1704 BCLK pin impedance

    Kurt G
    What's the input impedance of this pin? This info is needed for line termination. Thank you.
    on Jan 23, 2010

  • Forum Post: Guidelines for posting Precision Analog - Data Converter related topics

    Tom Hendrick
    Hi All! Welcome to the Precision Data Converter Forum! This forum supports the analog-to-digital (ADSxxxx) and digital-to-analog (DACxxxx) devices found on www.ti.com in the <=10MSPS categories. When posting to this forum, please try to provide as much information about the problem(s) you are experiencing...
    on Jan 28, 2010

  • Forum Post: PCM1794A imprecise reset documentation

    Pavel Ruzicka
    I had troubles with PCM1794A, that it doesn't reset after power-up. In datasheet is info, that PCM1794A has internal reset circuit and possibility to use external reset. There are not information, that when I want use only internal reset, I must have externally pulled-up reset pin to VDD or VCC....
    on Feb 3, 2010

  • Forum Post: TLV320AIC23B output problem

    Javier Gr
    Hello, I'm working with the stereo codec TLV320AIC23B and I can´t manage to get an audio signal at the output. What I get is a DC level. I have configured the device in DAC mode using I2C. It's working as slave. The MCLK frequency is 12.288 MHz, the BCLK frequency is 1.536 MHz and...
    on Mar 23, 2010

  • Forum Post: Re: TLV320AIC23B output problem

    Javier Gr
    Hello Vikas, I disabled these bits because according to the application note 'Dynamic Behavior of the TLV320DAC23 and the TLV320AIC23B' if OSC is disabled, MCLK still functions. And regarding to the CLK bit, it powers off the CLKOUT pin because we don't need it. Anyway, I also tried...
    on Mar 23, 2010

  • Forum Post: Re: TLV320AIC23B output problem

    Javier Gr
    Hello Vikas, We have placed the TLV320AIC23B in our own audio board. I have attached the schematic of the circuit, where capacitors S12 y S13 are not mounted for testing. I have one question related to the frequency of BCLK. At the end of page 24 of the datasheet it is said that when the codec...
    on Mar 24, 2010

  • Forum Post: TLV5616 DAC - SPI: Sending Data Twice?

    Jonathon Reinhart
    Hello, I'm using a TLV5616 12-bit DAC, and controlling it via SPI from an Atmel 8-bit AVR processor (AT90USB1286) (A Teensy 2.0++): I'm controlling the /CS and FS lines from software. Only SCLK and MOSI are controlled automatically via the chip's SPI module. Currently, it is working...
    on Apr 6, 2010

  • Forum Post: DAC7625

    Michael Schlenker50478
    Hi, I was just wondering what is the maximum output voltage of the DAC7625, a former burr-brown device. The datasheet says the output voltage can't be higher than REFH, whereas REFH has a maximum of 2.5V. Thus I would say 2.5V is the maximum. BUT, according to the TI product page the...
    on May 20, 2010

  • Forum Post: PCM1792(A) - Various Questions

    Jens Bauer
    Hi, I'm a 'newbie' in this area; currently developing hardware for (and software to control) a PCM1792A. A few questions arose in my mind. 1: Why is the DSD schematic different from the PCM schematic ? - isn't DSD just an input format? 2: What's the max. available sampling...
    on Jul 23, 2010

  • Forum Post: Re: 32bit version of the PCM1792A or DSD1792A

    Jens Bauer
    I agree as well. The S/N virtually eats up the extra 8 bits, but if using two DACs in monoaural mode, one could get a little closer. My guess is that the cool dudes behind the DACs are most likely working on something awesome right now. If not, I'd suggest that they make an 'easy enhancement'...
    on Jul 26, 2010

  • Forum Post: Re: Sampling rate of TLV320AIC3204.

    Fangyi Chen
    Hi, J Thanks for the reply. I have further questions in using the audio codec to generate a high frequency tone. 1. Sampling points. Despite the Nyquist, a sine wave may have to have more than 10 sampling point to show its shape. A codec dac is usually limited by its relatively low sampling rate...
    on Sep 23, 2010

  • Forum Post: Re: Sampling rate of TLV320AIC3204.

    Fangyi Chen
    Thanks again, J. You seemed to say that as long as the sine wave frequency is lower than 1/2 (Nyquist) sampling rate, there should be no problem. But I would like to confirm this with you again. The reason that I am skeptical about this is my experience with a MATLAB demo. It is in the data acquisition...
    on Sep 24, 2010

  • Forum Post: Interfacing DSK6713 with ADC/DAC

    Basavaraj Hiremath
    Hello, I need to interface DSK6713 with a ADC card and a DAC card. ADC card will be used for data collection from 2/3 analog channels at 100/200Ksps. DAC will be used to supply voltage to 4/5 analog devices. Can I use one 5-6k interface card to connect a ADC and DAC card to DSK 6713? Can I use...
    on Nov 11, 2010

  • Forum Post: Re: Interfacing DSK6713 with ADC/DAC

    Basavaraj Hiremath
    Thanks Tom, Now I am ready to order the 5-6k interface card. One more question, Any ADC EVMs that support 0-10v input? Thank you Basu
    on Nov 12, 2010

  • Forum Post: AIC3254 problems with right and left DACs

    Gonzalo R.
    Hi, I'm having trouble with output channels in AIC3254. This is my process, the simplest process, uniquely for testing output channels: I've modified registers and left channel is routed via HP (LDAC_P -->HPL, LDAC_N-->HPR), and right channel is routed via LO (RDAC_N-->LOL...
    on Dec 29, 2010

  • Forum Post: Re: 8-bit Multiplying DAC TLC7524

    Rafael Ordonez
    Hello Yihong, 1.- The part’s specs are characterized with OUT2 grounded and an opamp driving OUT1 to zero volts. Thus, OUT1 is not connected to ground, but it is made a virtual ground by the opamp like this: 2.- Vref provides a total current Iref, and this current is sent to OUT1 or OUT2...
    on Feb 1, 2011

  • Forum Post: help me to identifying dac

    senthil kumar66153
    i am looking for dac which has 12 bit resolution , dual channel , +/- 10v,+/-5,0-5v and 0-10v, which should require only single supply voltage of 5V,will u people help me to find out the device please
    on Feb 4, 2011

  • Forum Post: PCM1774 and IIS input

    Martin Sauer
    Hello, I want to use the PCM1774 in our design for analog and digital audio muxing. I get the digital audio data from CS8416 (digital audio interface receiver) in I2S format. I set the configuration registers descripted in the datasheet but don't get an audio signal at the ouput if I have a...
    on Feb 16, 2011

  • Forum Post: DSD1791A: Dynamically varying the sampling freq to change the freq of the output...

    Matt Hosler
    I am interested in using the DSD1792A DAC for an unconventional application. We need to produce a 20-40 kHz sine wave with 120 dB of dynamic range as a feedback signal to a sensor. We want to output the same values of a sine wave (min,max,and zero), but dynamically vary the sampling frequency to change...
    on Mar 7, 2011

  • Forum Post: ADC and DAC for TMDSDSK6713

    Nicholas Schwarz
    Hi, I'm new to TI's line of DSP products and was hoping I could find some advice here. I'm prototyping a low latency device for a biological application. The device needs to input two analog voltage channels via an ADC, do some processing that involves using the input voltage as the input...
    on Mar 9, 2011

  • Forum Post: Problems with the SPI Interface for the TLV5637 dual 10-bit DAC

    EigenFunctions
    I am trying to use the TLV5637 dual 10-bit DAC. I am having problems with the SPI interface. I am using software controlled output ports connected to the three TLV SPI pins. The timing is on the order of microseconds (i.e., times between any two transitions is always >1uS). I can see the data stream...
    on Mar 17, 2011

  • Forum Post: DAC7678EVM Output Voltage Not Detected

    Mueen Hakak
    Hello, We are using DAC7678EVM which is connected to a Stellaris LM3S8962 Microcontroller. Ths system uses I2C protocol. We can detect the input (SDA) and the clock (SCL) that is being sent to the DAC from the MCU. Jumpers: All default Input power supply: 5 V input to pin J3.3 Slave Address...
    on Mar 24, 2011

  • Forum Post: Where should I post my Data Converter question?

    Tom Hendrick
    Hi Everyone! This 'etc' forum is not looked after quite as well as some of the others, so if you simply are not sure which (Precision, High Speed, Audio, etc.) forum to post to, please consider the following: Audio converters are pretty self evident - if you've got a question about...
    on Mar 27, 2011

  • Forum Post: how to communicate of 89s52 with tlc 5620

    Hemal Bhatt
    how to communicate mcu 89s 52 with tlc5620 i want the sample souce code to get the analogue value of given digital value
    on Apr 6, 2011
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