поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

AD1380JD датащи(PDF) 7 Page - Analog Devices

номер детали AD1380JD
подробное описание детали  Low Cost 16-Bit Sampling ADC
Download  8 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
Logo AD - Analog Devices

AD1380JD датащи(HTML) 7 Page - Analog Devices

  AD1380JD Datasheet HTML 1Page - Analog Devices AD1380JD Datasheet HTML 2Page - Analog Devices AD1380JD Datasheet HTML 3Page - Analog Devices AD1380JD Datasheet HTML 4Page - Analog Devices AD1380JD Datasheet HTML 5Page - Analog Devices AD1380JD Datasheet HTML 6Page - Analog Devices AD1380JD Datasheet HTML 7Page - Analog Devices AD1380JD Datasheet HTML 8Page - Analog Devices  
Zoom Inzoom in Zoom Outzoom out
 7 / 8 page
background image
AD1380
–7–
REV. B
Figure 10. Analog and Power Connections for Bipolar –10 V
to +10 V Input Range
Other Ranges: Representative digital coding for 0 V to +10 V
and –10 V to +10 V ranges is given above. Coding relationships
and calibration points for 0 V to +5 V, –2.5 V to +2.5 V and –
5 V to +5 V ranges can be found by halving proportionally the
corresponding code equivalents listed for the 0 V to +10 V and
–10 V to +10 V ranges, respectively, as indicated in Table II.
Zero and full-scale calibration can be accomplished to a preci-
sion of approximately
±1/2 LSB using the static adjustment
procedure described above. By summing a small sine or triangu-
lar wave voltage with the signal applied to the analog input, the
output can be cycled through each of the calibration codes of
interest to more accurately determine the center (or end points)
of each discrete quantization level. A detailed description of this
dynamic calibration technique is presented in Analog-Digital
Conversion Handbook, edited by D. H. Sheingold, Prentice-Hall,
Inc., 1986.
GROUNDING, DECOUPLING AND LAYOUT
CONSIDERATIONS
Many data acquisition components have two or more ground
pins which are not connected together within the device. These
“grounds” are usually referred to as the Logic Power Return,
Analog Common (Analog Power Return) and Analog Signal
Ground. These grounds (Pins 8 and 30) must be tied together
at one point for the AD1380 as close as possible to the con-
verter. Ideally, a single, solid analog ground plane under the
converter would be desirable. Current flows through the wires
and etch stripes on the circuit cards, and since these paths have
resistance and inductance, hundreds of millivolts can be gener-
ated between the system analog ground point and the ground
pins of the AD1380. Separate wide conductor stripe ground
returns should be provided for high resolution converters to
minimize noise and IR losses from the current flow in the path
from the converter to the system ground point. In this way
AD1380 supply currents and other digital logic-gate return
currents are not summed into the same return path as analog
signals where they would cause measurement errors.
Each of the AD1380 supply terminals should be capacitively
decoupled as close to the AD1380 as possible. A large value
capacitor such as 1
µF in parallel with a 0.1 µF capacitor is
usually sufficient. Analog supplies are to be bypassed to the
Analog Power Return pin and the logic supply is bypassed to the
Logic Power Return pin.
The metal cover is internally grounded with respect to the
power supplies, grounds and electrical signals. Do not externally
ground the cover.
APPLICATION
AD1380 Dynamic Performance
High performance sampling analog-to-digital converters like the
AD1380 require dynamic characterization to assure they meet
or exceed their desired performance parameters for signal pro-
cessing applications. Key dynamic parameters include signal-to-
noise ratio (SNR) and total harmonic distortion (THD), which
are characterized using Fast Fourier Transform (FFT) analysis
techniques.
The results of that characterization are shown in Figure 11. In
the test a 13.2 kHz sine wave is applied as the analog input (fO)
at a level of l0 dB below full scale; the AD1380 is operated at a
word rate of 50 kHz (its maximum sampling frequency).
Figure 11.
The results of a 1024-point FFT demonstrate the exceptional
performance of the converter, particularly in terms of low noise
and harmonic distortion.
In Figure 11, the vertical scale is based on a full-scale input
referenced as 0 dB. In this way, all (frequency) energy cells can
be calculated with respect to full-scale rms inputs.
The resulting signal-to-noise ratio is 83.2 dB, which corresponds
to a noise floor of –93.2 dB.
Total harmonic distortion is calculated by adding the RMS
energy of the first four harmonics and equals –97.5 dB. Increas-
ing the input signal amplitude to –0.4 dB of full scale, causes
THD to increase to –80.6 dB as shown in Figure 12.


Аналогичный номер детали - AD1380JD

производительномер деталидатащиподробное описание детали
logo
Analog Devices
AD1380 AD-AD1380_15 Datasheet
248Kb / 12P
   Low Cost 16-Bit Sampling ADC
REV. D
More results

Аналогичное описание - AD1380JD

производительномер деталидатащиподробное описание детали
logo
Analog Devices
AD1380 AD-AD1380_15 Datasheet
248Kb / 12P
   Low Cost 16-Bit Sampling ADC
REV. D
logo
Linear Technology
LTC1605ACG LINER-LTC1605ACG Datasheet
339Kb / 16P
   16-Bit, 100ksps, Sampling ADC
LTC1605 LINER-LTC1605 Datasheet
490Kb / 16P
   16-Bit, 100ksps, Sampling ADC
LTC1605 LINER-LTC1605_15 Datasheet
339Kb / 16P
   16-Bit, 100ksps, Sampling ADC
logo
Analog Devices
AD1876 AD-AD1876 Datasheet
190Kb / 12P
   16-Bit 100 kSPS Sampling ADC
REV. A
AD676 AD-AD676_15 Datasheet
391Kb / 16P
   16-Bit 100 kSPS Sampling ADC
REV. A
AD676 AD-AD676_17 Datasheet
421Kb / 17P
   16-Bit 100 kSPS Sampling ADC
AD1876 AD-AD1876_15 Datasheet
158Kb / 12P
   16-Bit 100 kSPS Sampling ADC
REV. A
AD677 AD-AD677_15 Datasheet
430Kb / 16P
   16-Bit 100 kSPS Sampling ADC
REV. A
AD676 AD-AD676 Datasheet
388Kb / 16P
   16-Bit 100 kSPS Sampling ADC
REV. A
More results


Html Pages

1 2 3 4 5 6 7 8


датащи скачать

Go To PDF Page


ссылки URL




Конфиденциальность
ALLDATASHEETRU.COM
Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   обмен ссыками   |   поиск по производителю
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com