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

X  

AD73360LAR 数据表(PDF) 8 Page - Analog Devices

部件名 AD73360LAR
功能描述  Six-Input Channel Analog Front End
Download  32 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

AD73360LAR 数据表(HTML) 8 Page - Analog Devices

Back Button AD73360LAR Datasheet HTML 4Page - Analog Devices AD73360LAR Datasheet HTML 5Page - Analog Devices AD73360LAR Datasheet HTML 6Page - Analog Devices AD73360LAR Datasheet HTML 7Page - Analog Devices AD73360LAR Datasheet HTML 8Page - Analog Devices AD73360LAR Datasheet HTML 9Page - Analog Devices AD73360LAR Datasheet HTML 10Page - Analog Devices AD73360LAR Datasheet HTML 11Page - Analog Devices AD73360LAR Datasheet HTML 12Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 32 page
background image
REV. 0
AD73360L
–8–
FUNCTIONAL DESCRIPTION
General Description
The AD73360L is a six-input channel, 16-bit, analog front end.
It comprises six independent encoder channels each featuring
signal conditioning, programmable gain amplifier, sigma-delta
A/D converter and decimator sections. Each of these sections is
described in further detail below.
Encoder Channel
Each encoder channel consists of a signal conditioner, a switched
capacitor PGA, and a sigma-delta analog-to-digital converter
(ADC). An on-board digital filter, which forms part of the
sigma-delta ADC, also performs critical system-level filtering.
Due to the high-level of oversampling, the input antialias require-
ments are reduced such that a simple single pole RC stage is
sufficient to give adequate attenuation in the band of interest.
Signal Conditioner
Each analog channel has an independent signal conditioning
block. This allows the analog input to be configured by the user
depending on whether differential or single-ended mode is used.
Programmable Gain Amplifier
Each encoder section’s analog front end comprises a switched
capacitor PGA that also forms part of the sigma-delta modula-
tor. The SC sampling frequency is DMCLK/8. The PGA,
whose programmable gain settings are shown in Table II, may
be used to increase the signal level applied to the ADC from
low-output sources such as microphones, and can be used to
avoid placing external amplifiers in the circuit. The input signal
level to the sigma-delta modulator should not exceed the maxi-
mum input voltage permitted.
The PGA gain is set by bits IGS0, IGS1, and IGS2 in control
Registers D, E, and F.
Table II. PGA Settings for the Encoder Channel
IxGS2
IxGS1
IxGS0
Gain (dB)
000
0
001
6
010
12
011
18
100
20
101
26
110
32
111
38
ADC
Each channel has its own ADC consisting of an analog sigma-
delta modulator and a digital antialiasing decimation filter. The
sigma-delta modulator noise-shapes the signal and produces
1-bit samples at a DMCLK/8 rate. This bitstream, representing
the analog input signal, is input to the antialiasing decimation
filter. The decimation filter reduces the sample rate and increases
the resolution.
Analog Sigma-Delta Modulator
The AD73360L input channels employ a sigma-delta conver-
sion technique, which provides a high resolution 16-bit output
with system filtering being implemented on-chip.
Sigma-delta converters employ a technique known as over-
sampling, where the sampling rate is many times the highest
frequency of interest. In the case of the AD73360L, the initial
sampling rate of the sigma-delta modulator is DMCLK/8. The
main effect of oversampling is that the quantization noise is
spread over a very wide bandwidth, up to fS/2 = DMCLK/16
(Figure 6a). This means that the noise in the band of interest is
much reduced. Another complementary feature of sigma-delta
converters is the use of a technique called noise-shaping. This
technique has the effect of pushing the noise from the band of
interest to an out-of-band position (Figure 6b). The combina-
tion of these techniques, followed by the application of a digital
filter, reduces the noise in band sufficiently to ensure good
dynamic performance from the part (Figure 6c).
BAND
OF
INTEREST
fS/2
DMCLK/16
fS/2
DMCLK/16
fS/2
DMCLK/16
DIGITAL FILTER
NOISE-SHAPING
BAND
OF
INTEREST
BAND
OF
INTEREST
a.
b.
c.
Figure 6. Sigma-Delta Noise Reduction


类似零件编号 - AD73360LAR

制造商部件名数据表功能描述
logo
Analog Devices
AD73360LARZ AD-AD73360LARZ Datasheet
281Kb / 35P
   Six-Input Channel Analog Front End
REV. A
More results

类似说明 - AD73360LAR

制造商部件名数据表功能描述
logo
Analog Devices
AD73360ARZ AD-AD73360ARZ Datasheet
281Kb / 35P
   Six-Input Channel Analog Front End
REV. A
AD73360 AD-AD73360 Datasheet
281Kb / 35P
   Six-Input Channel Analog Front End
REV. A
AD73360L AD-AD73360L_15 Datasheet
271Kb / 32P
   Six-Input Channel Analog Front End
REV. 0
AD73460 AD-AD73460_15 Datasheet
597Kb / 32P
   Six-Input Channel Analog Front End
REV. A
AD73360L AD-AD73360L_17 Datasheet
302Kb / 33P
   Six-Input Channel Analog Front End
AD73360LARZ AD-AD73360LARZ Datasheet
281Kb / 35P
   Six-Input Channel Analog Front End
REV. A
AD73360 AD-AD73360_17 Datasheet
377Kb / 36P
   Six-input Channel Analog Front End
AD73460 AD-AD73460 Datasheet
290Kb / 32P
   Six-Input Channel Analog Front End
REV. 0
AD73360 AD-AD73360_15 Datasheet
281Kb / 35P
   Six-Input Channel Analog Front End
REV. A
logo
Microchip Technology
MCP3913 MICROCHIP-MCP3913 Datasheet
2Mb / 82P
   3V Six-Channel Analog Front End
08/20/13
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32


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