- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10122 > AD7863ARZ-3 (Analog Devices Inc)IC ADC 14BIT DUAL 2CHAN 28-SOIC PDF資料下載
參數(shù)資料
| 型號： | AD7863ARZ-3 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 7/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 14BIT DUAL 2CHAN 28-SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Power Line Monitoring |
| 標(biāo)準(zhǔn)包裝： | 27 |
| 位數(shù)： | 14 |
| 采樣率（每秒）： | 175k |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 功率耗散（最大）： | 94.5mW |
| 電壓電源： | 模擬和數(shù)字 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-SOIC W |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 4 個單端，單極；4 個單端，雙極 |
| 產(chǎn)品目錄頁面： | 779 (CN2011-ZH PDF) |
AD7863
Rev. B | Page 15 of 24
TOTAL HARMONIC DISTORTION (THD)
Total harmonic distortion (THD) is the ratio of the rms sum of
harmonics to the rms value of the fundamental. For the
AD7863, THD is defined as
()
1
5
4
3
2
V
dB
THD
2
log
20
+
=
(3)
where:
V1 is the rms amplitude of the fundamental.
V2, V3, V4, and V5 are the rms amplitudes of the second through
the fifth harmonic.
THD is also derived from the FFT plot of the ADC output
spectrum.
INTERMODULATION DISTORTION
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) and the third order terms
include (2fa + fb), (2fa fb), (fa + 2fb), and (fa 2fb).
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.
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 dBs. In this case, the input
consists of two equal amplitude, low distortion sine waves.
Figure 15 shows a typical IMD plot for the AD7863.
0
1020
30
405060
708090
06
41
1-
0
15
(d
B
)
FREQUENCY (kHz)
0
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
–140
–150
INPUT FREQUENCIES
F1 = 50.13kHz
F2 = 49.13kHz
fSAMPLE = 175kHz
IMD
2ND ORDER TERM
–98.21dB
3RD ORDER TERM
–93.91dB
Figure 15. IMD Plot
PEAK HARMONIC OR SPURIOUS NOISE
Harmonic or spurious noise is defined as 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 specification is
determined by the largest harmonic in the spectrum, but for
parts where the harmonics are buried in the noise floor, the
peak is a noise peak.
DC LINEARITY PLOT
the AD7863.
0
2048
4096
6144
8192
10240 12288 14336 16383
06
41
1-
0
16
DNL
E
RRO
R
(
L
S
B)
ADC CODE
1.0
0.5
0
–0.5
–1.0
Figure 16. DC DNL Plot
0
2048
4096
6144
8192
10240 12288 14336 16383
064
11
-01
7
INL
E
RRO
R
(
L
S
B)
ADC CODE
1.0
0.5
0
–0.5
–1.0
Figure 17. DC INL Plot
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MS3102E14S-12P | CONN RCPT 3POS BOX MNT W/PINS |
| MS27505E17B8PC | CONN RCPT 8POS BOX MNT W/PINS |
| AD7863AR-3 | IC ADC 14BIT DUAL 2CH 28-SOIC |
| MS3106R12S-3P | CONN PLUG 2POS STRAIGHT W/PINS |
| XR3172EID-F | IC TXRX RS485 DIFF 3V 8NSOIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7863ARZ-31 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Simultaneous Sampling Dual 175 kSPS 14-Bit ADC |
| AD7863BR-10 | 功能描述:IC ADC 14BIT DUAL 2CH 28-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)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(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個單端，雙極 |
| AD7863BR-10REEL | 制造商:Analog Devices 功能描述:ADC Dual SAR 175ksps 14-bit Parallel 28-Pin SOIC W T/R 制造商:Rochester Electronics LLC 功能描述:2 CH.SIMULTANEOUS SAMPL.14-B DUAL ADC IC - Tape and Reel |
| AD7863BR-10REEL7 | 制造商:Analog Devices 功能描述:ADC Dual SAR 175ksps 14-bit Parallel 28-Pin SOIC W T/R |
| AD7863BR-3 | 功能描述:IC ADC 14BIT DUAL 2CH 28-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 位數(shù):14 采樣率（每秒）:83k 數(shù)據(jù)接口:串行，并聯(lián) 轉(zhuǎn)換器數(shù)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(yīng)商設(shè)備封裝:28-PDIP 包裝:管件 輸入數(shù)目和類型:1 個單端，雙極 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。