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參數資料
| 型號： | AD7676AST |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 16-Bit +-1 LSB INL, 500 kSPS, Differential ADC |
| 中文描述： | 1-CH 16-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PQFP48 |
| 封裝： | 1.40 MM HEIGHT, PLASTIC, MS-026BBC, LQFP-48 |
| 文件頁數： | 7/20頁 |
| 文件大小： | 321K |
| 代理商： | AD7676AST |
REV. 0
AD7676
–
7
–
DEFINITION OF SPECIFICATIONS
INTEGRAL NONLINEARITY ERROR (INL)
Integral Nonlinearity is the maximum deviation of a straight line
drawn through the transfer function of the actual ADC. The
deviation is measured from the middle of each code.
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 two’s
complement coding) should occur for an analog voltage 1 1/2 LSB
below the nominal +full scale (+2.499886 V for the
±
2.5 V range).
The
+
full-scale error is the deviation of the actual level of the
last transition from the ideal level.
–FULL-SCALE ERROR
The first transition (from 100 . . . 00 to 100 . . . 01 in two’s
complement coding) should occur for an analog voltage 1 1/2 LSB
above the nominal –full scale (–2.499962 V for the
±
2.5 V range).
The –full-scale error is the deviation of the actual level of the
last transition from the ideal level.
BIPOLAR ZERO ERROR
The bipolar zero error is the difference between the ideal midscale
input voltage (0 V) and the actual voltage producing the midscale
output code.
SPURIOUS FREE DYNAMIC RANGE (SFDR)
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) by the following formula:
[
and is expressed in bits.
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
The time required for the AD7676 to achieve its rated accuracy
after a full-scale step function is applied to its input.
PIN CONFIGURATION
48-Lead LQFP
(ST-48)
36
35
34
33
32
31
30
29
28
27
26
25
13 14 15 16 17 18 19 20 21 22 23 24
1
2
3
4
5
6
7
8
9
10
11
12
48 47 46 45 44
39 38 37
43 42 41 40
PIN 1
TOP VIEW
(Not to Scale)
AD7676
AGND
CNVST
PD
RESET
CS
RD
DGND
BUSY
D15
D14
D13
D12
AGND
AVDD
NC
BYTESWAP
OB/
2C
NC
NC
NC = NO CONNECT
SEP/
PAR
D0
D1
D2/DIVSCLK[0]
D3/DIVSCLK[1]
N
N
N
N
N
I
N
N
N
I
–
R
R
D
I
D
D
D
O
O
D
D
D
D
D
D
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| AD7676ASTRL | 16-Bit +-1 LSB INL, 500 kSPS, Differential ADC |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7676ASTRL | 制造商:Analog Devices 功能描述:ADC Single SAR 500ksps 16-bit Parallel/Serial 48-Pin LQFP T/R |
| AD7676ASTZ | 功能描述:IC ADC 16BIT 500KSPS DIFF 48LQFP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:PulSAR® 標準包裝:1 系列:microPOWER™ 位數:8 采樣率（每秒）:1M 數據接口:串行，SPI? 轉換器數目:1 功率耗散（最大）:- 電壓電源:模擬和數字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數目和類型:8 個單端，單極 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| AD7676ASTZKL1 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD7676ASTZRL | 功能描述:IC ADC 16BIT DIFF INP 48LQFP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:PulSAR® 標準包裝:1 系列:- 位數:14 采樣率（每秒）:83k 數據接口:串行，并聯 轉換器數目:1 功率耗散（最大）:95mW 電壓電源:雙 ± 工作溫度:0°C ~ 70°C 安裝類型:通孔 封裝/外殼:28-DIP（0.600"，15.24mm） 供應商設備封裝:28-PDIP 包裝:管件 輸入數目和類型:1 個單端，雙極 |
| AD7677 | 制造商:AD 制造商全稱:Analog Devices 功能描述:18-Bit, 2.5 LSB INL, 570 kSPS SAR ADC |
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