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参数资料
| 型号： | ADE7753ARSZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 36/60页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METERING 1PHASE 20SSOP |
| 标准包装： | 66 |
| 输入阻抗： | 390 千欧 |
| 测量误差： | 0.1% |
| 电压 - 高输入/输出： | 2.4V |
| 电压 - 低输入/输出： | 0.8V |
| 电流 - 电源： | 3mA |
| 电源电压： | 4.75 V ~ 5.25 V |
| 测量仪表类型： | 单相 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 20-SSOP |
| 包装： | 管件 |
| 产品目录页面： | 797 (CN2011-ZH PDF) |
| 配用： | EVAL-ADE7753ZEB-ND - BOARD EVALUATION AD7753 |
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ADE7753
compensation in the apparent power signal processing. The
23
VAENERGY [23:0]
0
offset compensation of the apparent power measurement is
done by calibrating each individual rms measurement.
APPARENT ENERGY CALCULATION
The apparent energy is given as the integral of the apparent
power.
48
0
∫
Apparent Energy = Apparent Power ( t ) dt
(30)
VADIV
%
The ADE7753 achieves the integration of the apparent power
signal by continuously accumulating the apparent power signal
in an internal 49-bit register. The apparent energy register
APPARENT POWER
+
+
48
0
(VAENERGY[23:0]) represents the upper 24 bits of this internal
ACTIVE POWER
register. This discrete time accumulation or summation is
equivalent to integration in continuous time. Equation 31
expresses the relationship
T
SIGNAL = P
APPARENT POWER ARE
ACCUMULATED (INTEGRATED) IN
THE APPARENT ENERGY REGISTER
∑
? ? ∞
T → 0 ?
? ?
Apparent Energy = Lim ?
? n = 0
Apparent Power ( nT ) × T ? (31)
??
TIME (nT)
02875-0-074
where:
n is the discrete time sample number.
T is the sample period.
Figure 75. ADE7753 Apparent Energy Calculation
VAENERGY[23:0]
0xFF,FFFF
VAGAIN = 0x7FF
The discrete time sample period (T) for the accumulation
register in the ADE7753 is 1.1 μs (4/CLKIN).
The apparent power signal is continuously added to the internal
register. This addition is a signed addition even if the apparent
energy remains theoretically always positive.
The 49 bits of the internal register are divided by VADIV. If the
value in the VADIV register is 0, then the internal active energy
0x80,0000
0x40,0000
0x20,0000
VAGAIN = 0x000
VAGAIN = 0x800
register is divided by 1. VADIV is an 8-bit unsigned register.
The upper 24 bits are then written in the 24-bit apparent energy
0x00,0000
6.26
12.52
18.78
25.04
TIME (minutes)
02875-0-075
register (VAENERGY[23:0]). RVAENERGY register (24 bits
long) is provided to read the apparent energy. This register is
reset to 0 after a read operation.
signals (sinusoidal) on the analog inputs. The three curves
displayed illustrate the minimum time it takes the energy register
to roll over when the VAGAIN registers content is equal to 0x7FF,
0x000, and 0x800. The VAGAIN register is used to carry out an
apparent power calibration in the ADE7753. As shown, the fastest
integration time occurs when the VAGAIN register is set to
maximum full scale, i.e., 0x7FF.
Figure 76. Energy Register Rollover Time for Full-Scale Power
(Maximum and Minimum Power Gain)
By using the interrupt enable register, the ADE7753 can be con-
figured to issue an interrupt (IRQ) when the apparent energy
register is more than half full or when an overflow occurs. The
half full interrupt for the unsigned apparent energy register is
based on 24 bits as opposed to 23 bits for the signed active energy
register.
Integration Times under Steady Load
As mentioned in the last section, the discrete time sample
period (T) for the accumulation register is 1.1 μs (4/CLKIN).
With full-scale sinusoidal signals on the analog inputs and the
VAGAIN register set to 0x000, the average word value from
Calculation section. The maximum value that can be stored in
the apparent energy register before it overflows is 2 24 or
0xFF,FFFF. The average word value is added to the internal
register, which can store 2 48 or 0xFFFF,FFFF,FFFF before it
Rev. C | Page 36 of 60
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADE7753ARSZ | 制造商:Analog Devices 功能描述:ENERGY METERING IC |
| ADE7753ARSZ | 制造商:Analog Devices 功能描述:IC MULTIFUNCTION METER |
| ADE7753ARSZRL | 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:* |
| ADE7753-ARSZRL | 制造商:Analog Devices 功能描述: |
| ADE7753XRS | 制造商:Analog Devices 功能描述: |
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