参数资料
| 型号： | ADE7166ASTZF8 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 73/152页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METER 1PHASE 64LQFP |
| 产品变化通告： | Product Discontinuance 27/Oct/2011 |
| 标准包装： | 160 |
| 输入阻抗： | * |
| 测量误差： | * |
| 电压 - 高输入/输出： | * |
| 电压 - 低输入/输出： | * |
| 电流 - 电源： | * |
| 电源电压： | * |
| 测量仪表类型： | * |
| 工作温度： | * |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 64-LQFP |
| 供应商设备封装： | 64-LQFP（10x10） |
| 包装： | 托盘 |
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ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/ADE7569
APPARENT ENERGY CALCULATION
The apparent energy is given as the integral of the apparent power.
provided to read the apparent energy. This register is reset to 0
after a read operation.
Apparent Energy = ∫ Apparent Power ( t ) dt
(33)
Note that the apparent energy register is unsigned. By setting the
VAEHF bit (Bit 2) and the VAEOF bit (Bit 5) in the Interrupt
Apparent Energy = lim ? ∑ Apparent Power ( nT ) × T ? (34)
? n = 0 ?
The ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/
ADE7569 achieve the integration of the apparent power signal
by continuously accumulating the apparent power signal in an
internal 48-bit register. The apparent energy register
(VAHR[23:0], Address 0x07) represents the upper 24 bits of this
internal register. This discrete time accumulation or summation
is equivalent to integration in continuous time. Equation 34
expresses the relationship.
? ∞ ?
T → 0
where:
n is the discrete time sample number.
T is the sample period.
The discrete time sample period (T) for the accumulation
register in the ADE7116/ADE7156/ADE7166/ADE7169/
ADE7566/ADE7569 is 1.22 μs (5/MCLK).
Figure 77 shows this discrete time integration or accumulation.
The apparent power signal is continuously added to the internal
Enable 2 SFR (MIRQENM, Address 0xDA), the device can be
configured to issue an ADE interrupt to the 8052 core when the
apparent energy register is 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 Time Under Steady Load: Apparent Energy
As mentioned in the Apparent Energy Calculation section, the
discrete time sample period (T) for the accumulation register is
1.22 μs (5/MCLK). With full-scale sinusoidal signals on the
analog inputs and the VAGAIN register (Address 0x1F) set to
0x000, the average word value from the apparent power stage is
0x1A36E2 (see the Apparent Power 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 overflows. Therefore, the
integration time under these conditions with VADIV = 0 is
calculated as follows:
register. This addition is a signed addition even if the apparent
energy theoretically remains positive.
The 49 bits of the internal register are divided by VADIV. If the
Time =
0xFFFF, FFFF, FFFF
0xD055
× 1 . 22 μ s = 199 sec = 3 . 33 min
(35)
value in the VADIV register (Address 0x26) is 0, the internal
apparent energy 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 register (VAHR[23:0], Address 0x07).
The RVAHR register (Address 0x08), which is 24 bits long, is
When VADIV is set to a value different from 0, the integration
time varies, as shown in Equation 36.
Time = Time WDIV = 0 × VADIV (36)
23
VAHR[23:0]
0
48
VADIV
%
0
APPARENT POWER
or
I rms
+
+
48
0
T
APPARENT
POWER SIGNAL = P
APPARENT POWER OR I rms IS
ACCUMULATED (INTEGRATED)
IN THE APPARENT ENERGY
REGISTER
TIME (nT)
Figure 77. Apparent Energy Calculation
Rev. B | Page 73 of 152
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相关代理商/技术参数 |
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|---|---|
| ADE7166ASTZF8-RL | 功能描述:IC ENERGY METER 1PHASE 64LQFP 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:* |
| ADE7169 | 制造商:AD 制造商全称:Analog Devices 功能描述:Single-Phase Energy Measurement IC with 8052 MCU, RTC and LCD driver |
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| ADE7169ACPF16-RL | 制造商:AD 制造商全称:Analog Devices 功能描述:Single-Phase Energy Measurement IC with 8052 MCU, RTC and LCD driver |
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