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AD73322: CD measurability
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"quad-buffer" headphone amplifier
AD1835: Output filters
AD1835A: DC offset voltage
AD1836: Sampling at 22.05kHz
AD1845: DC offset
AD1852: ESD sensitivity, HBM model data missing from datasheet
AD1853: output impedance
AD1853: Two devices in parallel
AD1854: SPI port unused
AD1871 single ended input range
AD1877: Calculation of the LSB value
AD1937: Failure due to I2C interface
AD1939: datasheet contradictions on SPI timing specification
AD193x family - supporting Sample Rates lower than 32 kHz
AD1955: Independency of the channels
AD1974 Stop Band Filter Response
AD1981 PCB Layout recommendation
AD1986: AC97 code
AD1992: Driving the input stage
AD73311: Power supply
AD73311: Power supply sequencing problem, using DVDD = 3.3V and AVDD = 5.2V
AD73311L: Cascade running at different sampling speeds
AD73322: CD measurability
AD73322: Vref transfer function
AD73322L: Frequency response
AD73360 timing questions
AD73360: Frequency response over sample rate
AD73360: Lower limit of the MCLK
AD73360: Reference voltage
AD73360: SDOFS in figure 10
AD73360: Settling time when changing the PGA gain
AD73360AR: DC performance
AD73360L: Reference does not always power up
ADAU1761: Can I connect one analog and one digital input channel to the ADAU1761 and process both of them together?
ADAU1966 maximum load current
ADAU1966: If using a direct MCLK can I leave LF and PLLVDD pins disconnected?
AVDD and DVDD range
Binary 2.20 format
Can AD1836A work at 32KHz or 44.1KHz sample rate?
Change sample rate by controlling SE pin.
Clicks and pops on power up
Do Analog Devices still have a range of HD Audio Codecs or has this technology all been sold off to Conexant?
Does the AD1852 accept SPDIF format?
Does volume control setting affect THD+N ?
EVAL-SSM2518Z evaluation board documentation and DLL for I2C control
Evaluation board Datasheet
FAQ: Can a digital microphone's PDM output be directly connected to an I2S input?
FAQ: Can MEMS mics be soldered to a flex PCB?
FAQ: Is a microphone with higher sensitivity better than one with lower sensitivity?
Gerber files for Eval board
How do I handle unused digital pins on an AD193x codec?
How to connect unused SDATA inputs on ADAU1966?
How to create an EEPROM image for the ADAU1772 that has different filter coefficients in Bank A and Bank B
I2S interface configuration
Interesting microphone application - "Acoustic telescope"
Long term drift for gain, Uref and FIT data
Low latency audio codec
MEMS microphone IBIS models
New MEMS microphone products
Power supplies, capacitors, and application schematics
Ref out voltage of the EVB
REGEN and THERM pins
Replacement for WM8731SEFL
Request for a 32 bit audio codec
Sample rate lower than 32KHz
SigmaStudio Help File - where could I find it
SSM2250: Replacement type available?
SSM2302: Output overshoot.
SSM2306: Exposed pad connection
SSM2529 Evaluation Board Documentation
SSM2529: Evaluation board documentation
SSM2603 audio codec power supply questions
SSM2603/SSM2604 Boot Sequence
Stand-alone Modes on the AD193x audio CODECs
Temperature drift of the internal PGA
The relationship between value of Input Level Control register (Address 0) and gain value
Unused analog input pin connection
Using ADAU1761 for microphone beamforming
Using ADAU1772 for microphone beamforming
Using LRCLK as PLL input
Video: Getting started with the EVAL-ADMP441Z
Video: Microphone Array Beamforming with the ADMP504
Whether it is pin compatible with TI TPA2010, On-Semi NCP2820?
Why doesn't Analog Devices manufacture 32-bit audio converters?
Working at 8KHz sample rate
AD73322: CD measurability
I want to make measurements at the tachometer output from dc-motors. This
signal is a dc-voltage with ac-parts (if the motor accelerate or stop). The
bandwith is therefore dc-max 2kHz. Can I use the ad-inputs of the ad73322 for
such a measurement (in the datasheet are examples of dc-in and dc-out
I ask, because I had the infoemation, thjat sigma-delta converters are not able
to convert dc-signals.
Do you have an layout example for the ad73322 in the RU28 (tssop) package?
Do you also have some hints for decoupling if the supply voltage comes from an
DC-DC converter (operates at 300kHz) ?
1)Firstly I must explain that the AD73322…family of parts are designed for the
telephony market, they are not characterised for DC operation, as you can see
from the datasheet, we do not give typical DC specs of linearity, offset and
gain errors. In addition , the analog front end is designed to work with a dc
bias at Vref, therefore you may dc couple the i/p’s if the DC voltage of the
signal is at the same dc voltage of the reference, otherwise you need to ac
couple the signal.
Sigma delta converters that are designed for the industrial market are very
capable of converting dc signals, it is the ADC’s and DAC’s designed for the
audio market that are not specified for DC operation, such as the AD73322.
This allows us to produce CODEC’s that are very cost effective due to the
elliminatin of the majority of DC testing that is carried out on our industrial
This address points to all the ap-notes available on sigma delta converter s
that we have posted on our web site.
We have a large range of converters that operate from DC to 2Khz, can you
detail your i/p signal range, the supply available, the resolution required,
the digital interface…plus any other relevant criteria, and I will get back to
you as soon as possible with a possible solution/solutions.
2)I take it you are refering to a land pattern for the AD73322 TSSOP package.
For pattern of the solder lands for any of our packages we recommend the
standard layout. You should be able to find it at the website of the IPC
(Institute for Interconnecting and Packaging Electronic Circuits). At
Under "Design" one will find a land pattern calculator that will
enable one to view the patterns in the current standard as well as calculate
new patterns from component data. It contains a user searchable database of
patterns for components not yet approved by EIA or EIAJ.
Analog Devices does not usually issue recommendations on land patterns
because these are partially dependent on the board design rules used, and on
the soldering processes used by the board assemblers.
3) Low dropout regulators are often used following switching regulators for
better regulation and lower noise. Low dropout regulators such as the ADP3310
are desirable in these applications because they require only a small input to
output series voltageto maintain regulation.
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