参数资料
| 型号： | ADE7116ASTZF8 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 62/152页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METER 64-LQFP |
| 产品变化通告： | Product Discontinuance 27/Oct/2011 |
| 标准包装： | 160 |
| 输入阻抗： | 770 千欧 |
| 测量误差： | 0.1% |
| 电压 - 高输入/输出： | 2V |
| 电压 - 低输入/输出： | 0.8V |
| 电流 - 电源： | 4mA |
| 电源电压： | 2.4 V ~ 3.7 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： | 64-LQFP |
| 供应商设备封装： | 64-LQFP（10x10） |
| 包装： | 托盘 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页当前第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页第139页第140页第141页第142页第143页第144页第145页第146页第147页第148页第149页第150页第151页第152页
ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/ADE7569
Voltage Channel RMS Calculation
Figure 63 shows details of the signal processing chain for the rms
The unit of power is the watt or joules/second. Equation 8 gives an
expression for the instantaneous power signal in an ac system.
calculation on the voltage channel. This voltage rms estimation is
done in the ADE7116/ADE7156/ADE7166/ADE7169/
ADE7566/ADE7569 using the mean absolute value calculation,
as shown in Figure 63. The voltage channel rms value is processed
from the samples used in the voltage channel waveform sampling
mode and is stored in the unsigned 24-bit V rms register.
The update rate of the voltage channel rms measurement is
MCLK/5. To minimize noise in the reading of the register, the
V rms register can also be configured to update only with the zero
v ( t ) = 2 × V sin( ω t )
i ( t ) = 2 × I sin( ω t )
where:
v is the rms voltage.
i is the rms current.
p ( t ) = v ( t ) × i ( t )
p ( t ) = VI ? VI cos( 2 ω t )
(8)
(9)
(10)
crossing of the voltage input. This configuration is done by setting
the ZXRMS bit (Bit 2) in the MODE2 register (Address 0x0C).
The average power over an integral number of line cycles (n) is
given by the expression in Equation 11.
∫ 0
With the specified full-scale ac analog input signal of 0.4 V, the
output from LPF1 in Figure 63 swings between 0x28F5 and
0xD70B at 60 Hz (see the Voltage Channel ADC section). The
P =
1
nT
nT
p ( t ) dt = VI
(11)
POWER SIGNAL
equivalent rms value of this full-scale ac signal is approximately
0d1,898,124 (0x1CF68C) in the V rms register. The voltage rms
measurement provided in the ADE7116/ADE7156/ADE7166/
ADE7169/ADE7566/ADE7569 is accurate to within ±0.5% for
signal input between full scale and full scale/20. The conversion
from the register value to volts must be done externally in the
microprocessor using a V/LSB constant.
Voltage Channel RMS Offset Compensation
The ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/
ADE7569 incorporate a voltage channel rms offset compensation
register (VRMSOS). This is a 12-bit signed register that can be
used to remove offset in the voltage channel rms calculation. An
offset can exist in the rms calculation due to input noises and dc
offset in the input samples. One LSB of the voltage channel rms
offset is equivalent to 64 LSBs of the rms register. Assuming that
the maximum value from the voltage channel rms calculation is
0d1,898,124 with full-scale ac inputs, then 1 LSB of the voltage
channel rms offset represents 3.37% of measurement error at
?60 dB down from full scale.
where:
T is the line cycle period.
P is referred to as the active or real power.
Note that the active power is equal to the dc component of the
instantaneous power signal p(t) in Equation 11, that is, VI. This
is the relationship used to calculate active power in the ADE7116/
ADE7156/ADE7166/ADE7169/ADE7566/ADE7569. The instan-
taneous power signal p(t) is generated by multiplying the current
and voltage signals. The dc component of the instantaneous power
signal is then extracted by LPF2 (low-pass filter) to obtain the
active power information. This process is illustrated in Figure 64.
INSTANTANEOUS
p(t) = v × i – v × i × cos(2 ω t)
0x19999A
ACTIVE REAL POWER
SIGNAL = v × i
VI
0xCCCCD
V rms = V rms0 + 64 × VRMSOS
(7)
0x00000
where V rms0 is the rms measurement without offset correction.
ACTIVE POWER CALCULATION
Active power is defined as the rate of energy flow from source
to load. It is the product of the voltage and current waveforms.
The resulting waveform is called the instantaneous power signal
and is equal to the rate of energy flow at every instant of time.
CURRENT
i(t) = √ 2 × i × sin( ω t)
VOLTAGE
v(t) = √ 2 × v × sin( ω t)
Figure 64. Active Power Calculation
Because LPF2 does not have an ideal brick wall frequency
response (see Figure 65), the active power signal has some
ripple due to the instantaneous power signal. This ripple is
sinusoidal and has a frequency equal to twice the line frequency.
Because of its sinusoidal nature, the ripple is removed when the
active power signal is integrated to calculate energy (see the
Active Energy Calculation section).
Rev. B | Page 62 of 15 2
相关PDF资料 |
PDF描述 |
|---|---|
| ADE5166ASTZF62-RL | IC METER/8052/RTC/LCD DRV 64LQFP |
| ADE5166ASTZF62 | IC METER/8052/RTC/LCD DRV 64LQFP |
| NCP699SN28T1G | IC REG LDO 2.8V 240MA 5TSOP |
| RSC50DRYN-S13 | CONN EDGECARD 100POS .100 EXTEND |
| LFEC3E-4QN208I | IC FPGA 3.1KLUTS 208PQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADE7116ASTZF8-RL | 功能描述:IC ENERGY METER 64-LQFP 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:* |
| ADE7156ASTZF16 | 功能描述:IC ENERGY METER 64-LQFP 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:* |
| ADE7156ASTZF16-RL | 功能描述:IC ENERGY METER 64-LQFP 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:* |
| ADE7156ASTZF8 | 功能描述:IC ENERGY METER 64-LQFP 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:* |
| ADE7156ASTZF8-RL | 功能描述:IC ENERGY METER 64-LQFP 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:* |
发布紧急采购，3分钟左右您将得到回复。