参数资料
| 型号： | CDB5467U |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 14/46页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR CS5467 ADC |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电度表/功率表 |
| 嵌入式： | 是，MCU，8 位 |
| 已用 IC / 零件： | CS5467 |
| 主要属性： | 电能表 |
| 次要属性： | 图形用户接口，SPI? 和 USB 接口 |
| 已供物品： | 板，线缆，软件 |
| 产品目录页面： | 754 (CN2011-ZH PDF) |
| 相关产品： | CS5467-ISZR-ND - IC ENERGY METERING 1PHASE 28SSOP 598-1197-5-ND - IC ENERGY METERING 1PHASE 28SSOP |
| 其它名称： | 598-1555 CDB-5467U |
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CS5467
V1 OFF
V1 GAIN
FGA
1
VHPF 1 IHPF1
I1 OFF
I1 GAIN
Figure 3. Signal Flow for V1, I1, P1, Q1 Measurements
4. SIGNAL PATH DESCRIPTION
The data flow for voltage and current measurement and
4.1 Analog-to-Digital Converters
Voltage1 channel and voltage2/temperature channel
use second-order delta-sigma modulators and the two
current channels use fourth-order delta-sigma modula-
tors to convert the analog inputs to single-bit digital data
streams. The converters sample at a rate of DCLK/8.
This high sampling provides a wide dynamic range and
simplifies anti-alias filter design.
4.2 Decimation Filters
The single-bit modulator output data is widened to 24
bits and down-sampled to DCLK/1024 with low-pass
decimation filters. These decimation filters are third-or-
der Sinc. Their outputs are passed through third-order
IIR “anti-sinc” filters, used to compensate for the ampli-
tude roll-off of the decimation filters.
4.3 Phase Compensation
Phase compensation changes the phase of current rel-
ative to voltage by changing the sampling time in the
decimation filters. The amount of phase shift is set by
bits PC[7:0] in the Configuration register ( Config ) for
channel 1 and bits PC[7:0] in the Control register ( Ctrl )
for channel 2.
Phase compensation, PC[7:0] is a signed two’s comple-
ment binary value in the range of -1.0 to almost +1.0
output word rate (OWR) samples. For a sample rate of
4000 Hz, the delay range is ±250 uS, a phase shift of
±4.5° at 50 Hz and ±5.4° at 60 Hz. The step size would
be 0.0352° at 50 Hz and 0.0422° at 60 Hz at this sample
rate.
FGA
V2 OFF
V2 GAIN
V2
V2Q
Q2
2
VHPF 2 IHPF2
P2
2
Control Register
I2
I2 OFF
I2 GAIN
Figure 4. Signal Flow for V2, I2, P2, Q2 Measurements
14
DS714F3
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| CDB5471 | 制造商:Cirrus Logic 功能描述:Tools Development kit Kit Con |
| CDB5480U-Z | 功能描述:电源管理IC开发工具 CS5480 Eval Board RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| CDB5484U-Z | 功能描述:电源管理IC开发工具 CS5484 Eval Board RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| CDB5490U-Z | 功能描述:电源管理IC开发工具 CS5490 Eval Board RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| CDB5501 | 制造商:Cirrus Logic 功能描述:EVAL BOARD FOR CS5501 - Bulk |
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