- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄298814 > ADE7753ARSZRL (ANALOG DEVICES INC) SPECIALTY ANALOG CIRCUIT, PDSO20 PDF資料下載
參數(shù)資料
| 型號： | ADE7753ARSZRL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO20 |
| 封裝： | ROHS COMPLIANT, MO-150AE, SSOP-20 |
| 文件頁數(shù)： | 10/60頁 |
| 文件大?。?/td> | 938K |
| 代理商： | ADE7753ARSZRL |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁
ADE7753
Rev. C | Page 18 of 60
FREQUENCY (Hz)
102
103
02875-0-037
FREQ
–88.0
PHASE
(
D
egr
ees)
–88.5
–89.0
–89.5
–90.0
–90.5
Figure 37. Combined Phase Response of the
Digital Integrator and Phase Compensator
FREQUENCY (Hz)
–1.0
–6.0
40
70
45
GAIN
(
d
B)
50
55
60
65
–1.5
–2.0
–2.5
–3.5
–4.5
–5.5
–3.0
–4.0
–5.0
02875-0-038
Figure 38. Combined Gain Response of the
Digital Integrator and Phase Compensator (40 Hz to 70 Hz)
–89.75
–89.80
–89.85
–89.90
–89.95
–90.00
FREQUENCY (Hz)
PH
A
SE
(
D
egrees)
40
45
70
50
55
60
65
–90.05
–89.70
02875-0-039
Figure 39. Combined Phase Response of the
Digital Integrator and Phase Compensator (40 Hz to 70 Hz)
Note that the integrator has a –20 dB/dec attenuation and an
approximately –90° phase shift. When combined with a di/dt
sensor, the resulting magnitude and phase response should be a
flat gain over the frequency band of interest. The di/dt sensor
has a 20 dB/dec gain associated with it. It also generates signifi-
cant high frequency noise, therefore a more effective anti-
aliasing filter is needed to avoid noise due to aliasing—see the
Antialias Filter section.
When the digital integrator is switched off, the ADE7753 can be
used directly with a conventional current sensor such as a current
transformer (CT) or with a low resistance current shunt.
ZERO-CROSSING DETECTION
The ADE7753 has a zero-crossing detection circuit on
Channel 2. This zero crossing is used to produce an external
zero-crossing signal (ZX), and it is also used in the calibration
mode—see the Calibrating an Energy Meter Based on the
ADE7753 section. The zero-crossing signal is also used to
initiate a temperature measurement on the ADE7753—see the
Temperature Measurement section.
Figure 40 shows how the zero-crossing signal is generated from
the output of LPF1.
×1, ×2, ×1,
×8, ×16
ADC 2
REFERENCE
1
LPF1
f–3dB = 140Hz
–63% TO +63% FS
PGA2
{GAIN [7:5]}
V2P
V2N
V2
ZERO
CROSS
ZX
TO
MULTIPLIER
2.32° @ 60Hz
1.0
0.93
ZX
V2
LPF1
02875-0-040
Figure 40. Zero-Crossing Detection on Channel 2
The ZX signal goes logic high on a positive-going zero crossing
and logic low on a negative-going zero crossing on Channel 2.
The zero-crossing signal ZX is generated from the output of
LPF1. LPF1 has a single pole at 140 Hz (at CLKIN = 3.579545
MHz). As a result, there is a phase lag between the analog input
signal V2 and the output of LPF1. The phase response of this
filter is shown in the Channel 2 Sampling section. The phase lag
response of LPF1 results in a time delay of approximately
1.14 ms (@ 60 Hz) between the zero crossing on the analog
inputs of Channel 2 and the rising or falling edge of ZX.
The zero-crossing detection also drives the ZX flag in the
interrupt status register. The ZX flag is set to Logic 0 on the
rising and falling edge of the voltage waveform. It stays low
until the status register is read with reset. An active low in the
IRQ output also appears if the corresponding bit in the
interrupt enable register is set to Logic 1.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADEX-R10+ | 10 MHz - 1000 MHz RF/MICROWAVE DOUBLE BALANCED MIXER, 8.3 dB CONVERSION LOSS-MAX |
| ADF08S | SLIDE DIP SWITCH-8SWITCHES, SPST, LATCHED,SURFACE MOUNT-STRAIGHT |
| ADF09A-KG-TAXB3-R | 9 CONTACT(S), MALE, D SUBMINIATURE CONNECTOR, SOLDER |
| ADF7011BRUZ-RL7 | SPECIALTY TELECOM CIRCUIT, PDSO24 |
| ADF7011BRUZ-RL | SPECIALTY TELECOM CIRCUIT, PDSO24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADE7753-ARSZRL | 制造商:Analog Devices 功能描述: |
| ADE7753XRS | 制造商:Analog Devices 功能描述: |
| ADE7754 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Poly-phase Multi-Function Energy Metering IC with Serial Port |
| ADE7754AR | 制造商:Analog Devices 功能描述:Energy Measurement 24-Pin SOIC W 制造商:Rochester Electronics LLC 功能描述:THREE PHASE ENERGY METER IC W/WATT & VA - Bulk 制造商:Analog Devices 功能描述:IC ENERGY METER |
| ADE7754ARRL | 制造商:Analog Devices 功能描述:Energy Measurement 24-Pin SOIC W T/R 制造商:Rochester Electronics LLC 功能描述:THREE PHASE ENERGY METER IC W/WATT & VA - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。