- 您现在的位置：买卖IC网 > PDF目录10289 > AD7829BRW-1RL7 (Analog Devices Inc)IC ADC 8BIT 8CH 2MSPS 28-SOIC PDF资料下载
参数资料
| 型号： | AD7829BRW-1RL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 19/20页 |
| 文件大小： | 0K |
| 描述： | IC ADC 8BIT 8CH 2MSPS 28-SOIC |
| 标准包装： | 400 |
| 位数： | 8 |
| 采样率（每秒）： | 2M |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 36mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC W |
| 包装： | 带卷 (TR) |
| 输入数目和类型： | 8 个单端，单极 |
AD7829-1
Rev. 0 | Page 8 of 20
TERMINOLOGY
As a result, the second and third order terms are specified
separately. The calculation of the intermodulation distortion is
as per the THD specification, where it is the ratio of the rms
sum of the individual distortion products to the rms amplitude
of the fundamental expressed in decibels (dB).
Signal-to-(Noise + Distortion) Ratio
The measured ratio of signal-to-(noise + distortion) at the
output of the A/D converter. The signal is the rms amplitude of
the fundamental. Noise is the rms sum of all nonfundamental
signals up to half the sampling frequency (fS/2), excluding dc.
The ratio is dependent upon the number of quantization levels
in the digitization process; the more levels, the smaller the
quantization noise. The theoretical signal-to-(noise +
distortion) ratio for an ideal N-bit converter with a sine wave
input is given by
Channel-to-Channel Isolation
A measure of the level of crosstalk between channels. It is
measured by applying a full-scale 20 kHz sine wave signal to
one input channel and determining how much that signal is
attenuated in each of the other channels. The figure given is
the worst case across all eight channels of the AD7829-1.
Signal-to-(Noise + Distortion) = (6.02N + 1.76) dB
Thus, for an 8-bit converter, this is 50 dB.
Relative Accuracy or Endpoint Nonlinearity
The maximum deviation from a straight line passing through
the endpoints of the ADC transfer function.
Total Harmonic Distortion (THD)
The ratio of the rms sum of harmonics to the fundamental.
For the AD7829-1 it is defined as
Differential Nonlinearity
The difference between the measured and the ideal 1 LSB
change between any two adjacent codes in the ADC.
1
6
5
4
3
2
V
THD
2
log
20
)
dB
(
+
=
Offset Error
where V1 is the rms amplitude of the fundamental, and V2, V3,
V4, V5, and V6 are the rms amplitudes of the second through the
sixth harmonics.
The deviation of the 128th code transition (01111111) to
(10000000) from the ideal, that is, VMID.
Offset Error Match
Peak Harmonic or Spurious Noise
The difference in offset error between any two channels.
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 parts where the harmonics are buried in the noise floor,
it will be a noise peak.
Zero-Scale Error
The deviation of the first code transition (00000000) to
(00000001) from the ideal; that is, VMID 1.25 V + 1 LSB (VDD =
5 V ± 10%), or VMID 1.0 V + 1 LSB (VDD = 3 V ± 10%).
Full-Scale Error
Intermodulation Distortion
The deviation of the last code transition (11111110) to
(11111111) from the ideal; that is, VMID + 1.25 V 1 LSB (VDD =
5 V ± 10%), or VMID + 1.0 V 1 LSB (VDD = 3 V ± 10%).
With inputs consisting of sine waves at two frequencies, fa and
fb, any active device with nonlinearities creates distortion
products at sum and difference frequencies of mfa ± nfb, where
m, n = 0, 1, 2, 3… . Intermodulation terms are those for which
neither m nor n is 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
AD7829-1 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 and third order terms are of different
significance. The second order terms are usually distanced in
frequency from the original sine waves, while the third order
terms are usually at a frequency close to the input frequencies.
Gain Error
The deviation of the last code transition (1111 . . . 110) to
(1111 . . . 111) from the ideal; that is, VREF 1 LSB, after the
offset error has been adjusted out.
Gain Error Match
The difference in gain error between any two channels.
相关PDF资料 |
PDF描述 |
|---|---|
| D38999/26JG39SNLC | CONN HSG PLUG 39POS STRGHT SCKT |
| D38999/20JG11PNLC | CONN HSG RCPT 11POS WALL MT PINS |
| LTC1407HMSE#PBF | IC ADC 12BIT 3MSPS 10-MSOP |
| LTC1850CFW | IC ADC 10BIT 1.25MSPS 48-TSSOP |
| MS27499E16F8P | CONN RCPT 8POS BOX MNT W/PINS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7829BRWZ-1 | 功能描述:IC ADC 8BIT 8CH 2MSPS 28-SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| AD7829BRWZ-1RL7 | 功能描述:IC ADC 8BIT 8CH 2MSPS 28-SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
| AD7829BRZ | 功能描述:IC ADC 8BIT 8CH 2MSPS 28-SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| AD7829BRZ1 | 制造商:AD 制造商全称:Analog Devices 功能描述:3 V/5 V, 2 MSPS, 8-Bit, 1-/4-/8-Channel Sampling ADCs |
| AD7829BRZ-REEL | 功能描述:IC ADC 8BIT 8CH 2MSPS 28-SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极 |
发布紧急采购，3分钟左右您将得到回复。