收藏本站

ADE7759
REFERENCE
1,
8,
2,
16
2.42V, 1.21V, 0.6V
4,
{GAIN[4:3]}
V1P
{GAIN[2:0]}
MULTIPLIER DIGITAL LPF
HPF
DIGITAL
INTEGRATOR *
TO WAVEFORM
SAMPLE REGISTER
V1
PGA1
ADC 1
Sinc 3
∫
TO MULTIPLIER
V1N
801HEX–7FFHEX
50Hz
CHANNEL 1 (ACTIVE POWER)
DATA RANGE AFTER
INTEGRATOR (50Hz)
APGAIN[11:0]
2E72Eh
+94.5% FS
V1
0.5V, 0.25V,
0.125V, 62.5mV,
31.3mV, 15.6mV,
40000h
+FS
CHANNEL 1 (ACTIVE POWER)
1EF74h
F7BAh
00000h
+63% FS
+31.5% FS
0V
2851Fh
+63% FS
3C7AEh
DATA RANGE
+94.5% FS
F0846h
E108Ch
– 31.5% FS
– 63% FS
ANALOG
00000h
2851Fh
1428Fh
+63% FS
+31.5% FS
D18D2h
000h 7FFh
801h
– 94.5% FS
INPUT
RANGE
D7AE1h
– 63% FS
00000h
EBD71h
– 31.5% FS
60Hz
APGAIN[11:0]
C0000h
ADC OUTPUT
WORD RANGE
– FS
D7AE1h
C3852h
000h
7FFh
801h
– 63% FS
– 94.5% FS
CHANNEL 1 (ACTIVE POWER)
DATA RANGE AFTER
INTEGRATOR (60Hz)
APGAIN[11:0]
* WHEN DIGITAL INTEGRATOR IS ENABLED, FULL-SCALE OUTPUT DATA VARIES DEPENDING
ON THE SIGNAL FREQUENCY BECAUSE OF –20dB/DECADE FREQUENCY RESPONSE.
26B50h
19CE0h
0CE70h
00000h
F3190h
E6320h
+94.5% FS
+63% FS
+31.5% FS
– 31.5% FS
– 63% FS
D94B0h
000h 7FFh 801h
– 94.5% FS
APGAIN[11:0]
Figure 23. ADC and Signal Processing in Channel 1
Channel 1 ADC Gain Adjust
The ADC gain in Channel 1 can be adjusted by using the multi-
plier and active power gain register (APGAIN[11:0]). The gain of
the ADC is adjusted by writing a twos complement 12-bit word
to the active power gain register. Below is the expression that
shows how the gain adjustment is related to the contents of the
active power gain register.
wave form samples are transferred from the ADE7759 one byte
(eight bits) at a time, with the most significant byte shifted out
first. The 20-bit dataword is right justified and sign extended to
24 bits (three bytes)—see Serial Interface section.
SAMPLING RATE (27.9kSPS, 14kSPS, 7kSPS, OR 3.5kSPS)
IRQ
Code = ? ADC × ? 1 +
? ?
? ?
? ?
? ?
APGAIN ? ?
2 12
SCLK
DIN
16 s
READ FROM WAVEFORM
0 0 0 01 HEX
For example, when 7FFh is written to the active power gain
register, the ADC output is scaled up by 50%. 7FFh = 2047
decimal, 2047/2 12 = 0.5. Similarly, 801h = 2047 decimal
(signed twos complement) and ADC output is scaled by –50%.
These two examples are illustrated in Figure 23.
DOUT
SIGN
CHANNEL 1 DATA
– 20 BITS
Figure 24. Waveform Sampling Channel 1
Channel 1 Sampling
The waveform samples may also be routed to the waveform
register (MODE[14:13] = 1, 0) to be read by the system master
(MCU). In waveform sampling mode, the WSMP bit (Bit 3) in
the interrupt enable register must also be set to Logic 1. The
active power and energy calculation will remain uninterrupted
during waveform sampling.
CHANNEL 1 AND CHANNEL 2 WAVEFORM SAMPLING
MODE
In Channel 1 and Channel 2 waveform sampling mode
(MODE[14:13] = 01), the output is a 40-bit waveform sample
data that contains the waveform samples from both Channel 1
and Channel 2 ADCs. Figure 25 shows the format of the 40-bit
waveform output.
When in waveform sample mode, one of four output sample
rates may be chosen by using Bits 11 and 12 of the mode regis-
ter DTRT(1, 0). The output sample rate may be 27.9 kSPS,
1 BYTE
BIT 39
CH2[19:16] CH1[19:16]
2 BYTES
CH1[15:0]
2 BYTES
CH2[15:0]
BIT 0
14 kSPS, 7 kSPS, or 3.5 kSPS—see Mode Register section. The
interrupt request output IRQ signals a new sample availability
by going active low. The timing is shown in Figure 24. The 20-bit
–18 –
Figure 25. 40-Bit Combined Channel 1 and Channel 2
Waveform Sample Data Format
REV. A
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
EVAL-ADE7762EBZ BOARD EVALUATION FOR ADE7762
EVAL-ADE7763ZEB BOARD EVALUATION FOR ADE7763
EVAL-ADE7816EBZ BOARD EVALUATION FOR ADE7816
EVAL-ADE7878EBZ BOARD EVAL FOR ADE7878
EVAL-ADE7880EBZ BOARD EVAL FOR ADE7880
EVAL-ADE7953EBZ BOARD EVAL FOR ADE7953
EVAL-ADF4002EBZ1 BOARD EVAL FOR ADF4002
EVAL-ADG788EBZ BOARD EVALUATION FOR ADG788
相关代理商/技术参数
EVAL-ADE7762EBZ 功能描述:BOARD EVALUATION FOR ADE7762 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081
EVAL-ADE7763EB 制造商:Analog Devices 功能描述:EVALUATION BOARD DOCUMENTATION ADE7763 ENERGY METERING IC
EVAL-ADE7763ZEB 功能描述:BOARD EVALUATION FOR ADE7763 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:PSoC® 主要目的:电源管理，热管理 嵌入式:- 已用 IC / 零件:- 主要属性:- 次要属性:- 已供物品:板，CD，电源
EVAL-ADE7816EBZ 功能描述:BOARD EVALUATION FOR ADE7816 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:PSoC® 主要目的:电源管理，热管理 嵌入式:- 已用 IC / 零件:- 主要属性:- 次要属性:- 已供物品:板，CD，电源
EVAL-ADE7854EBZ 制造商:Analog Devices 功能描述:EVALUATION BOARDS - Boxed Product (Development Kits)
EVAL-ADE7858EBZ 制造商:AD 制造商全称:Analog Devices 功能描述:Poly Phase Multifunction Energy Metering IC with per Phase Active and Reactive Powers
EVAL-ADE7878EBZ 功能描述:BOARD EVAL FOR ADE7878 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:PCI Express® (PCIe) 主要目的:接口，收发器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要属性:- 次要属性:- 已供物品:板
EVAL-ADE7880EBZ 功能描述:BOARD EVAL FOR ADE7880 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:* 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 主要目的:电源管理，电池充电器 嵌入式:否 已用 IC / 零件:MAX8903A 主要属性:1 芯锂离子电池 次要属性:状态 LED 已供物品:板