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| 型号： | CS5464-IS |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 22/46页 |
| 文件大小： | 0K |
| 描述： | IC PWR/ENERGY METER 3CH 28-SSOP |
| 标准包装： | 47 |
| 输入阻抗： | 30 千欧 |
| 测量误差： | 0.1% |
| 电压 - 高输入/输出： | 0.8V |
| 电压 - 低输入/输出： | 0.2V |
| 电流 - 电源： | 3.5mA |
| 电源电压： | 4.75 V ~ 5.25 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： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 管件 |
| 配用： | 598-1554-ND - BOARD EVAL FOR CS5464 ADC |
| 其它名称： | 598-1193-5 |
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CS5464
7. USING THE CS5464
7.1 Initialization
The CS5464 uses a power-on-reset circuit (POR) to
provide an internal reset until the analog voltage reach-
es 4.0 V. The RESET input pin can also be used by the
application circuit to reset the part.
After RESET is removed and the oscillator is stable, an
initialization program is executed to set the default reg-
ister values.
A Software Reset command is also provided to allow
the application to run the initialization program without
removing power or asserting RESET.
The application should avoid sending commands during
initialization. The DRDY bit in the Status register indi-
cates when the initialization program has completed.
7.2 Power-down States
The CS5464 has two power-down states, stand-by and
sleep. In the stand-by state, all circuitry except the volt-
age reference and crystal oscillator is powered off. In
sleep state, all circuitry except the instruction decoder is
powered off.
To return the device to the active state, send a Wake-
Up/Halt command to the device. When returning from
stand-by mode, registers will retain their contents prior
to entering the stand-by state. When returning from
sleep mode, a complete initialization occurs.
7.3 Tamper Detection and Correction
The CS5464 provides compensation for at least two
forms of meter tampering. A second current input is pro-
vided in the event that the primary input is impaired by
tampering. (See Figure 14 on page 42). An internal
RMS voltage reference is also available in the event that
the voltage input has been compromised by tampering.
Power and energy are calculated for BOTH current in-
puts (both energy channels). The CS5464 can automat-
ically choose the channel with the greater magnitude.
The register E MIN , (also called Irms MIN ) sets a minimum
level for automatic channel selection, and Ichan LEVEL
sets a minimum difference that will allow a channel
22
change. Modes register bit Ichan selects the energy
channel, and is normally driven by the CS5464 pro-
gram. This affects the pulse registers and pulse energy
outputs. (See figure 8 ).
The application program can also choose the more ap-
propriate energy channel. Modes register bit Ihold dis-
ables automatic selection and Ichan can be driven by
the application. Shown below is the channel selector.
AVG
AVG
Figure 8. Energy Channel Selection
If the application detects that the voltage input has been
impaired it may choose to use the fixed internal RMS
voltage reference by setting the VFIX bit in the Modes
register. The value of this reference ( VF RMS ) is by de-
fault 0.707107 (full-scale RMS) but can be changed by
the application program. (See figure 9 )
Figure 9. Fixed RMS Voltage Selection
DS682F3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CS5464-ISZ | 功能描述:电流和电力监控器、调节器 3-Ch Single Phase Power/Energy IC RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| CS5464-ISZR | 功能描述:电流和电力监控器、调节器 IC 3-Ch Single Phase PWR/Energy RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
| CS5466 | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:Low-cost Power/Energy IC with Pulse Output |
| CS5466_05 | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:Low-cost Power/Energy IC with Pulse Output |
| CS5466-IS | 功能描述:电流和电力监控器、调节器 Low-Cost Pwr/Energy w/Pulse Output IC RoHS:否 制造商:STMicroelectronics 产品:Current Regulators 电源电压-最大:48 V 电源电压-最小:5.5 V 工作温度范围:- 40 C to + 150 C 安装风格:SMD/SMT 封装 / 箱体:HPSO-8 封装:Reel |
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