- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373980 > ADE7169ASTZF16-RL (ANALOG DEVICES INC) Single-Phase Energy Measurement IC with 8052 MCU, RTC and LCD driver PDF資料下載
參數(shù)資料
| 型號(hào)： | ADE7169ASTZF16-RL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | Single-Phase Energy Measurement IC with 8052 MCU, RTC and LCD driver |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, QCC64 |
| 封裝： | 9 X 9 MM, ROHS COMPLIANT, MO-22-VMMD-4, LFCSP-64 |
| 文件頁(yè)數(shù)： | 42/140頁(yè) |
| 文件大小： | 1359K |
| 代理商： | ADE7169ASTZF16-RL |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)當(dāng)前第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)
ADE7169F16
Preliminary Technical Data
Rev. PrD | Page 42 of 140
V1P
V1N
V
IN
K
V
IN
GAIN[7:0]
4
7
6
5
3
2
1
0
0
0
0
0
0
0
0
0
GAIN (K)
SELECTION
Figure 16. PGA in current channel
In addition to the PGA, Channel 1 also has a full-scale input
range selection for the ADC. The ADC analog input range
selection is also made using the gain register—see Figure 17. As
mentioned previously, the maximum differential input voltage is
0.5 V.
RESERVED
GAIN REGISTER*
CURRENT AND VOLTAGE CHANNELS PGA CONTROL
7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0
ADDR:
1BH
*REGISTER CONTENTS
SHOW POWER-ON DEFAULTS
PGA 2 GAIN SELECT
000 = x 1
001 = x 2
010 = x 4
011 = x 8
100 = x 16
PGA 1 GAIN SELECT
000 = x 1
001 = x 2
010 = x 4
011 = x 8
100 = x 16
Figure 17. ADE7169F16 Analog Gain Register
ANALOG TO DIGITAL CONVERSION
The ADE7169F16 has two sigma-delta Analog to Digital
Converters (ADC). The outputs of these ADCs are mapped
directly to waveform sampling SFRs (address 0xE2 to 0xE7) and
are used for the energy measurement internal digital signal
processing. In PSM1 (Battery mode)and PSM2 (Sleep mode),
the ADCs are powered down to minimize power consumption.
For simplicity, the block diagram in Figure 18 shows a first-
order
Σ
-Δ ADC. The converter is made up of the
Σ
-Δ
modulator and the digital low-pass filter.
24
DIGITAL
LOW-PASS
FILTER
R
C
ANALOG
LOW-PASS FILTER
+
–
V
REF
1-BIT DAC
INTEGRATOR
MCLK/5
LATCHED
COMPARATOR
.....10100101.....
+
–
Figure 18. First-Order
Σ
- ADC
A
Σ
-
modulator converts the input signal into a continuous
serial stream of 1s and 0s at a rate determined by the sampling
clock. In the ADE7169F16, the sampling clock is equal to
MCLK/5. The 1-bit DAC in the feedback loop is driven by the
serial data stream. The DAC output is subtracted from the input
signal. If the loop gain is high enough, the average value of the
DAC output (and therefore the bit stream) can approach that of
the input signal level. For any given input value in a single
sampling interval, the data from the 1-bit ADC is virtually
meaningless. Only when a large number of samples are averaged
is a meaningful result obtained. This averaging is carried out in
the second part of the ADC, the digital low-pass filter. By
averaging a large number of bits from the modulator, the low-
pass filter can produce 24-bit data-words that are proportional
to the input signal level.
The
Σ
-Δ converter uses two techniques to achieve high
resolution from what is essentially a 1-bit conversion technique.
The first is oversampling. Oversampling means that the signal is
sampled at a rate (frequency), which is many times higher than
the bandwidth of interest. For example, the sampling rate in the
ADE7169F16 is MCLK/5 (819.2 kHz) and the band of interest is
40 Hz to 2 kHz. Oversampling has the effect of spreading the
quantization noise (noise due to sampling) over a wider
bandwidth. With the noise spread more thinly over a wider
bandwidth, the quantization noise in the band of interest is
lowered — see Figure 19. However, oversampling alone is not
efficient enough to improve the signal-to-noise ratio (SNR) in
the band of interest. For example, an oversampling ratio of 4 is
required just to increase the SNR by only 6 dB (1 bit). To keep
the oversampling ratio at a reasonable level, it is possible to
shape the quantization noise so that the majority of the noise
lies at the higher frequencies. In the
Σ
-Δ modulator, the noise is
shaped by the integrator, which has a high-pass-type response
for the quantization noise. The result is that most of the noise is
at the higher frequencies where it can be removed by the digital
low-pass filter. This noise shaping is shown in Figure 19.
409.6
0
819.2
2
NOISE
SIGNAL
DIGITAL
FILTER
ANTILALIAS
FILTER (RC)
SAMPLING
FREQUENCY
HIGH RESOLUTION
OUTPUT FROM DIGITAL
LPF
SHAPED
NOISE
409.6
0
819.2
2
NOISE
SIGNAL
FREQUENCY (kHz)
FREQUENCY (kHz)
02875-0-047
Figure 19. Noise Reduction Due to Oversampling and
Noise Shaping in the Analog Modulator
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADE7169F16 | Single-Phase Energy Measurement IC with 8052 MCU, RTC and LCD driver |
| ADE7751 | Energy Metering IC with On-Chip Fault Detection |
| ADE7751AAN-REF | Energy Metering IC with On-Chip Fault Detection |
| ADE7751AN | Energy Metering IC with On-Chip Fault Detection |
| ADE7751ARS | Energy Metering IC with On-Chip Fault Detection |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADE7169F16 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Single-Phase Energy Measurement IC with 8052 MCU, RTC and LCD driver |
| ADE75 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Single-Phase Energy Measurement IC with 8052 MCU, RTC and LCD driver |
| ADE7518ASTZF16 | 功能描述:IC ENERGY METER MCU 16K 64LQFP RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測(cè)量 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:* |
| ADE7518ASTZF16-RL | 功能描述:IC ENERGY METER MCU 16K 64LQFP RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測(cè)量 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:* |
| ADE7518ASTZF8 | 功能描述:IC ENERGY METER MCU 8K 64LQFP RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測(cè)量 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:* |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。