• Driving an AD5663R with a BF547 SPI Bus

    I am controlling AD5663R D to A Converters using the SPI bus on a BF547 processor. I find the amount of time to write one output code to the AD5663R is slower than I expected and need.

    The connections I have now are:

    BF547
    AD…
  • AD5663无故复位

    问题:AD5663R无缘无故的没有电压输出了

    出现频率:有时几天1次,有时几个月一次,有时1天几次

    PCB结构:一个大板上插了8个一模一样的小板,电源是从大板供到小板。

                     AD5663R就是在小板上,小板上还有 ATmega16L、AD7705等;

                     小板上有信号接口与示波器连接。

                    在8个板上都出现过AD5663R无电压输出(不是8个板同时出现状况,没有规律可寻)

                  

    已经实施过的检查:

    ①掉电引起的复位-----因为PCB上还有MCU,AD7705等都不会出现复位,所以排除了电源掉电…

  • RE: ADALM1000 Input/Output Resolution

    Hello Stephan,

    ADALM1000 uses 16bit converters ( AD5663R for digital to analog conversion and AD7682 for analog to digital conversion)  and offers voltage and current operation from 0 to 5 Volts (V), from -200 to 200 milliamps (mA).

    https://ez.analog.com…

  • RE: AD5623R Power-on Reset Circuit

    1. I don't know the exact reset voltage for the AD5663R. Based on similar DACs it usually happens between 2V and 2.5V.

    2. The power on reset is primarily used when powering from 0V. There will be some hysteresis in the circuit so if the power suppy…

  • RE: nanoDAC-What are nanoDACs?

    nanoDACs are a portfolio of products which combine small package, low power and low cost digital to analog conversion.

    nanoDACs are monotonic DACs which can be powered off a single 3V or 5V supply and are available in the industries smallest packages…

  • nanoDAC - Which DACs should be used for open loop systems and which DACs should be used in closed loop systems?

    It must be stressed that depending on the application performance requirements, all nanoDACs can be used in both open and closed loop systems.

    In an open loop application the DAC drives the load (a valve or an actuator, for example) directly while in…

  • TAGS LIST: Data Converters

    AD693
    AD5410
    AD5412
    AD5420
    AD5422
    AD5735
    AD5755
    AD5755-1
    AD5737
    AD5757
    AD5421
    AD421
    AD5758
    AD7569
    AD7669
    AD7868
    AD7869
    AD5593R
    AD5592R
    AD5940
    AD5941
    AD7293
    AD7294-2
    AD7292
    AD5590
    AD7294
    L…
  • What is real noise performance of nanodac/nanodac+?

    There are many mismatches in noise characteristics found in datasheets of nanodac and nanodac+ families.

    Let's examine AD5689R one first.

    DAC output NSD (DAC code = midscale, 10 kHz; gain = 2) is 300 nV/√Hz and LF noise 6 µV p-p. With gain 2 and…

  • AD566x/4x/2x(R) -  Supply Voltages & On-chip Reference options

    The AD5664R has two on-chip reference options available, 1.25V and 2.5V. What is the recommended supply voltage in each case?

  • Resolving to 16 Bits Using a Precision DAC

    I’m using a 16-bit DAC in an industrial control application and I’m having a hard time resolving the LSB.  I know I need to reduce the noise floor – what areas of the application should I address that will have the most impact on the DAC output?". …