参数资料
| 型号： | AD7667ASTZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 3/28页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT UNIPOLAR 48-LQFP |
| 标准包装： | 1 |
| 系列： | PulSAR® |
| 位数： | 16 |
| 采样率（每秒）： | 1M |
| 数据接口： | 串行，并联 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 145mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 托盘 |
| 输入数目和类型： | 2 个伪差分，单极 |
| 产品目录页面： | 778 (CN2011-ZH PDF) |
| 配用： | EVAL-AD7667CBZ-ND - BOARD EVALUATION FOR AD7667 |
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AD7667
Rev. 0 | Page 11 of 28
DEFINITIONS OF SPECIFICATIONS
Integral Nonlinearity Error (INL)
Linearity error refers to the deviation of each individual code
from a line drawn from negative full scale through positive full
scale. The point used as negative full scale occurs LSB before
the first code transition. Positive full scale is defined as a level
1 LSB beyond the last code transition. The deviation is
measured from the middle of each code to the true straight line.
Differential Nonlinearity Error (DNL)
In an ideal ADC, code transitions are 1 LSB apart. Differential
nonlinearity is the maximum deviation from this ideal value. It
is often specified in terms of resolution for which no missing
codes are guaranteed.
Full-Scale Error
The last transition (from 011…10 to 011…11 in twos comple-
ment coding) should occur for an analog voltage 1 LSB below
the nominal full scale (2.49994278 V for the 0 V to 2.5 V range).
The full-scale error is the deviation of the actual level of the last
transition from the ideal level.
Unipolar Zero Error
The first transition should occur at a level LSB above analog
ground (19.073 V for the 0 V to 2.5 V range). Unipolar zero
error is the deviation of the actual transition from that point.
Spurious-Free Dynamic Range (SFDR)
SFDR is the difference, in decibels (dB), between the rms
amplitude of the input signal and the peak spurious signal.
Effective Number of Bits (ENOB)
ENOB is a measurement of the resolution with a sine wave
input. It is related to S/(N+D) and is expressed in bits by the
following formula:
ENOB = (S/[N+D]dB – 1.76)/6.02
Total Harmonic Distortion (THD)
THD is the ratio of the rms sum of the first five harmonic
components to the rms value of a full-scale input signal, and is
expressed in decibels.
Signal-to-Noise Ratio (SNR)
SNR is the ratio of the rms value of the actual input signal to the
rms sum of all other spectral components below the Nyquist
frequency, excluding harmonics and dc. The value for SNR is
expressed in decibels.
Signal-to-(Noise + Distortion) Ratio (S/[N+D])
S/(N+D) is the ratio of the rms value of the actual input signal
to the rms sum of all other spectral components below the
Nyquist frequency, including harmonics but excluding dc. The
value for S/(N+D) is expressed in decibels.
Aperture Delay
Aperture delay is a measure of the acquisition performance and
is measured from the falling edge of the CNVST input to when
the input signal is held for a conversion.
Transient Response
Transient response is the time required for the AD7667 to
achieve its rated accuracy after a full-scale step function is
applied to its input.
Reference Voltage Temperature Coefficient
Reference voltage temperature coefficient is derived from the
maximum and minimum reference output voltage (VREF)
measured at TMIN, T(25°C), and TMAX. It is expressed in ppm/°C
using the following equation:
6
10
)
–
(
)
C
25
(
)
–
)
C
ppm/
(
×
°
=
°
MIN
MAX
REF
T
V
Min
(
V
Max
(
V
TCV
where:
VREF(Max) = Maximum VREF at TMIN, T(25°C), or TMAX
VREF(Min) = Minimum VREF at TMIN, T(25°C), or TMAX
VREF(25°C) = VREF at 25°C
TMAX = +85°C
TMIN = –40°C
Thermal Hysteresis
Thermal hysteresis is defined as the absolute maximum change
of reference output voltage after the device is cycled through
temperature from either
T_HYS+ = 25°C to TMAX to 25°C
T_HYS– = 25°C to TMIN to 25°C
It is expressed in ppm using the following equation:
6
10
)
25
(
)
_
(
)
25
(
)
(
×
°
°
=
C
V
HYS
T
V
C
V
ppm
V
REF
HYS
where:
VREF(25°C) = VREF at 25°C
VREF(T_HYS) = Maximum change of VREF at T_HYS+ or
T_HYS–
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7667ASTZ | 制造商:Analog Devices 功能描述:16BIT ADC INT REF 7667 LQFP48 |
| AD7667ASTZRL | 功能描述:IC ADC 16BIT UNIPOLAR 48LQFP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:PulSAR® 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| AD7669 | 制造商:AD 制造商全称:Analog Devices 功能描述:LC2MOS Complete, 8-Bit Analog I/0 Systems |
| AD7669AN | 制造商:Analog Devices 功能描述:Data Acquisition System Single ADC Dual DAC 8-Bit 28-Pin PDIP W |
| AD7669AR | 功能描述:IC I/O PORT 8BIT ANLG 28-SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 专用 系列:LC²MOS 特色产品:NXP - I2C Interface 标准包装:1 系列:- 应用:2 通道 I²C 多路复用器 接口:I²C，SM 总线 电源电压:2.3 V ~ 5.5 V 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:剪切带 (CT) 安装类型:表面贴装 产品目录页面:825 (CN2011-ZH PDF) 其它名称:568-1854-1 |
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