数据搜索系统,热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

AD7457BRT-REEL7 数据表(PDF) 10 Page - Analog Devices

部件名 AD7457BRT-REEL7
功能描述  Low Power, Pseudo Differential, 100 kSPS
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7457BRT-REEL7 数据表(HTML) 10 Page - Analog Devices

Back Button AD7457BRT-REEL7 Datasheet HTML 6Page - Analog Devices AD7457BRT-REEL7 Datasheet HTML 7Page - Analog Devices AD7457BRT-REEL7 Datasheet HTML 8Page - Analog Devices AD7457BRT-REEL7 Datasheet HTML 9Page - Analog Devices AD7457BRT-REEL7 Datasheet HTML 10Page - Analog Devices AD7457BRT-REEL7 Datasheet HTML 11Page - Analog Devices AD7457BRT-REEL7 Datasheet HTML 12Page - Analog Devices AD7457BRT-REEL7 Datasheet HTML 13Page - Analog Devices AD7457BRT-REEL7 Datasheet HTML 14Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 20 page
background image
AD7457
Rev. A | Page 10 of 20
TERMINOLOGY
Signal to (Noise + Distortion) Ratio (SINAD)
The measured ratio of SINAD at the output of the ADC. The
signal is the rms amplitude of the fundamental. Noise is the
sum of all nonfundamental signals up to half the sampling
frequency (fS/2), excluding dc. The ratio is dependent on the
number of quantization levels in the digitization process; the
more levels, the smaller the quantization noise. The theoretical
SINAD ratio for an ideal N-bit converter with a sine wave input
is given by
(
) (
)dB
76
.
1
02
.
6
+
=
+
N
Distortion
Noise
to
Signal
Therefore, for a 12-bit converter, the SINAD is 74 dB.
Total Harmonic Distortion (THD)
The ratio of the rms sum of harmonics to the fundamental. For
the AD7457, it is defined as
()
1
2
6
2
5
2
4
2
3
2
2
20
dB
V
V
V
V
V
V
log
THD
+
+
+
+
=
where:
V1
is the rms amplitude of the fundamental.
V2
, V3, V4, V5, and V6 are the rms amplitudes of the second to the
sixth harmonics.
Peak Harmonic or Spurious Noise
The ratio of the rms value of the next largest component in the
ADC output spectrum (up to fS/2 and excluding dc) to the rms
value of the fundamental. Normally, the value of this specifica-
tion is determined by the largest harmonic in the spectrum, but,
for ADCs where the harmonics are buried in the noise floor, it is
a noise peak.
Intermodulation Distortion
With inputs consisting of sine waves at two frequencies, fa and
fb, any active device with nonlinearities creates distortion prod-
ucts at sum and difference frequencies of mfa ± nfb, where m, n
= 0, 1, 2, 3, and so on. Intermodulation distortion terms are
those for which neither m nor n are equal to zero. For example,
the second order terms include (fa + fb) and (fa − fb), while the
third order terms include (2fa + fb), (2fa − fb), (fa + 2fb) and
(fa − 2fb).
The AD7457 is tested using the CCIF standard, where two input
frequencies near the top end of the input bandwidth are used.
In this case, the second order terms are usually distanced in fre-
quency from the original sine waves, while the third order terms
are usually at a frequency close to the input frequencies. As a
result, the second and third order terms are specified separately.
The calculation of the intermodulation distortion is as per the
total harmonic distortion specification, where it is the ratio of
the rms sum of the individual distortion products to the rms
amplitude of the sum of the fundamentals expressed in dB.
Aperture Delay
The amount of time from the leading edge of the sampling
clock until the ADC actually takes the sample.
Aperture Jitter
The sample-to-sample variation in the effective point in time at
which the actual sample is taken.
Full-Power Bandwidth
The full-power bandwidth of an ADC is that input frequency
at which the amplitude of the reconstructed fundamental is
reduced by 0.1 dB or 3 dB for a full-scale input.
Integral Nonlinearity (INL)
The maximum deviation from a straight line passing through
the endpoints of the ADC transfer function.
Differential Nonlinearity (DNL)
The difference between the measured and the ideal 1 LSB
change between any two adjacent codes in the ADC.
Offset Error
The deviation of the first code transition (000...000 to 000...001)
from the ideal (that is, AGND + 1 LSB).
Gain Error
The deviation of the last code transition (111...110 to 111...111)
from the ideal (that is, VREF − 1 LSB), after the offset error has
been adjusted out.
Track-and-Hold Acquisition Time
The minimum time required for the track-and-hold amplifier to
remain in track mode for its output to reach and settle to within
0.5 LSB of the applied input signal.
Power Supply Rejection Ratio (PSRR)
The ratio of the power in the ADC output at full-scale
frequency, f, to the power of a 100 mV p-p sine wave applied to
the ADC VDD supply of frequency fs. The frequency of this
input varies from 1 kHz to 1 MHz.
PSRR
(dB) = 10 log(Pf/Pfs)
Pf
is the power at frequency f in the ADC output; Pfs is the
power at frequency fs in the ADC output.


类似零件编号 - AD7457BRT-REEL7

制造商部件名数据表功能描述
logo
Analog Devices
AD7457BRT-REEL7 AD-AD7457BRT-REEL7 Datasheet
509Kb / 20P
   Low Power, Pseudo Differential, 100 kSPS 12-Bit ADC in an 8-Lead SOT-23
REV. 0
AD7457BRT-REEL7 AD-AD7457BRT-REEL7 Datasheet
491Kb / 21P
   Low Power, Pseudo Differential, 100 kSPS 12-Bit ADC in an 8-Lead SOT-23
REV. A
AD7457BRT-REEL7 AD-AD7457BRT-REEL7 Datasheet
343Kb / 21P
   Low Power, Pseudo Differential, 100 kSPS 12-Bit ADC in an 8-Lead SOT-23
More results

类似说明 - AD7457BRT-REEL7

制造商部件名数据表功能描述
logo
Analog Devices
AD7457 AD-AD7457_17 Datasheet
343Kb / 21P
   Low Power, Pseudo Differential, 100 kSPS 12-Bit ADC in an 8-Lead SOT-23
AD7457 AD-AD7457_15 Datasheet
524Kb / 21P
   Low Power, Pseudo Differential, 100 kSPS 12-Bit ADC in an 8-Lead SOT-23
REV. A
logo
Texas Instruments
ADC141S628-Q1 TI1-ADC141S628-Q1 Datasheet
992Kb / 29P
[Old version datasheet]   14-Bit, 200-kSPS, Pseudo-Differential, Micro-Power ADC
logo
Analog Devices
AD7457BRT AD-AD7457BRT Datasheet
491Kb / 21P
   Low Power, Pseudo Differential, 100 kSPS 12-Bit ADC in an 8-Lead SOT-23
REV. A
AD7457 AD-AD7457 Datasheet
509Kb / 20P
   Low Power, Pseudo Differential, 100 kSPS 12-Bit ADC in an 8-Lead SOT-23
REV. 0
AD7942 AD-AD7942_15 Datasheet
383Kb / 24P
   14-Bit, 250 kSPS PulSAR, Pseudo Differential ADC in MSOP/LFCSP
REV. C
AD7942 AD-AD7942 Datasheet
555Kb / 24P
   14-Bit, 250 kSPS PulSAR, Pseudo Differential ADC in MSOP/QFN
REV. B
AD7675 AD-AD7675 Datasheet
399Kb / 20P
   16-Bit, 100 kSPS, Differential ADC
REV. 0
AD7675 AD-AD7675_17 Datasheet
342Kb / 21P
   16-Bit, 100 kSPS Differential ADC
AD7453 AD-AD7453_17 Datasheet
424Kb / 21P
   Pseudo Differential, 555 kSPS 12-Bit ADC in an 8-Lead SOT-23
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


数据表 下载

Go To PDF Page


链接网址




隐私政策
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   链接交换   |   制造商名单
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