- 您現在的位置：買賣IC網 > PDF目錄373915 > AD7729 (Analog Devices, Inc.) Dual Sigma-Delta ADC with Auxiliary DAC PDF資料下載
參數資料
| 型號： | AD7729 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Dual Sigma-Delta ADC with Auxiliary DAC |
| 中文描述： | 雙Σ-Δ型ADC輔助DAC |
| 文件頁數： | 8/16頁 |
| 文件大小： | 142K |
| 代理商： | AD7729 |
AD7729
–8–
REV. 0
TERMINOLOGY
Absolute Group Delay
Absolute group delay is the rate of change of phase versus fre-
quency, d/df. It is expressed in microseconds.
Differential Nonlinearity
This is the difference between the measured and the ideal
1 LSB change between any two adjacent codes in the DAC or
ADC.
Dynamic Range
Dynamic Range is the ratio of the maximum output signal to the
smallest output signal the converter can produce (1 LSB), ex-
pressed logarithmically, in decibels (dB = 201og
10
(ratio)). For
an N-bit converter, the ratio is theoretically very nearly equal to
2
N
(in dB, 20Nlog10(2) = 6.02N). However, this theoretical
value is degraded by converter noise and inaccuracies in the
LSB weight.
Gain Error
This is a measure of the output error between an ideal DAC and
the actual device output with all 1s loaded after offset error has
been adjusted out. In the AD7729, gain error is specified for the
auxiliary section.
Gain Matching Between Channels
This is the gain matching between the IRx and QRx channel
and is expressed in dBs.
Group Delay Between Channels
This is the difference between the group delay of the I and Q
channels and is a measure of the phase matching characteristics
of the two.
Integral Nonlinearity
This is the maximum deviation from a straight line passing
through the endpoints of the auxiliary DAC transfer function.
Output Rate
This is the rate at which data words are made available
(270.833 kHz).
Offset Error
This is the amount of offset, wrt V
REF
in the auxiliary DAC and
is expressed in mVs.
Output Signal Span
This is the output signal range for the auxiliary DAC section.
Sampling Rate
This is the rate at which the modulators on the receive channels
sample the analog input.
Settling Time
This is the digital filter settling time in the AD7729 receive
section. On initial power-up or after returning from the power-
down mode, it is necessary to wait this amount of time to get
useful data.
Signal Input Span
The input signal range for the I and Q channels is biased about
V
REF
.
Signal to (Noise + Distortion) Ratio
This is the measured ratio of signal to (noise + distortion) at the
output of the receive channel. The signal is the rms amplitude of
the fundamental. Noise is the rms sum of all nonfundamental
signals up to half the sampling frequency (f
S
/2), excluding dc.
The ratio is dependent upon the number of quantization levels
in the digitization process; the more levels, the smaller the quan-
tization noise. The theoretical signal to (noise + distortion) ratio
for a sine wave is given by:
Signal to
(
Noise
+
Distortion
) = (6.02
N
+ 1.76)
dB
相關PDF資料 |
PDF描述 |
|---|---|
| AD7729AR | Dual Sigma-Delta ADC with Auxiliary DAC |
| AD7729ARU | Dual Sigma-Delta ADC with Auxiliary DAC |
| AD7730LBR | Bridge Transducer ADC |
| AD7730LBRU | Bridge Transducer ADC |
| AD7730 | Bridge Transducer ADC |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7729AR | 制造商:Analog Devices 功能描述:ADC Dual Delta-Sigma 13Msps 15-bit Serial 28-Pin SOIC W 制造商:Rochester Electronics LLC 功能描述:3DUAL SIGMA DELTA ADC I.C. - Bulk 制造商:Analog Devices 功能描述:ADC DUAL SIGMA DELTA 7729 SOIC28 |
| AD7729AR-REEL7 | 制造商:Analog Devices 功能描述:ADC Dual Delta-Sigma 13Msps 15-bit Serial 28-Pin SOIC W T/R |
| AD7729ARU | 功能描述:IC ADC 15BIT DUAL W/DAC 28-TSSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - ADCs/DAC - 專用型 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 類型:數據采集系統（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數據接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| AD7729ARU-REEL | 功能描述:IC ADC 15BIT DUAL W/DAC 28-TSSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - ADCs/DAC - 專用型 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 類型:數據采集系統（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數據接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| AD7729ARU-REEL7 | 功能描述:IC ADC 15BIT DUAL W/DAC 28-TSSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - ADCs/DAC - 專用型 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 類型:數據采集系統（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數據接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
發布緊急采購，3分鐘左右您將得到回復。