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| 型号： | CDB5464U |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 17/46页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR CS5464 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： | CS5464 |
| 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： | CS5464-ISZR-ND - IC ENERGY METERING 1PHASE 28SSOP 598-1194-5-ND - IC ENERGY METERING 1PHASE 28SSOP 598-1193-5-ND - IC PWR/ENERGY METER 3CH 28-SSOP |
| 其它名称： | 598-1554 CDB-5464U |
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CS5464
5. PIN DESCRIPTIONS
5.1 Analog Pins
The CS5464 has three differential inputs: VIN ??? IIN1 ? ,
and IIN2 ? are the voltage, current1, and current2 inputs,
respectively. A single-ended power fail monitor input,
voltage reference input, and voltage reference output
are also available.
5.1.1 Voltage Inputs
The output of the line voltage resistive divider or trans-
5.1.6 Crystal Oscillator
An external quartz crystal can be connected to the XIN
and XOUT pins as shown in Figure 6 . To reduce system
cost, each pin is supplied with an on-chip, phase-shift-
ing capacitor to ground.
.
XOUT
former is connected to the VIN+ and VIN- input pins of
the CS5464. The voltage channel is equipped with a
10x, fixed-gain amplifier. The full-scale signal level that
can be applied to the voltage channel is ±250mV. If the
input signal is a sine wave, the maximum RMS voltage
is 250mVp / ? 2 ? 176.78mVRMS which is approxi-
mately 70.7% of maximum peak voltage.
5.1.2 Current1 and Current2 Inputs
The output of the current-sensing resistor or transform-
XIN
DGND
C1
C2
Oscillator
Circuit
C1 = C2 = 22 pF
er is connected to the IIN1+ (IIN2+) and IIN1- (IIN2-) in-
put pins of the CS5464. To accommodate different
current-sensing elements, the current channel incorpo-
rates a programmable gain amplifier (PGA) with two se-
lectable input gains. The full-scale signal level for the
current channels is ±50mV or ±250mV. If the input sig-
nal is a sine wave, the maximum RMS voltage is
35.35mVRMS or 176.78mVRMS which is approximate-
ly 70.7% of maximum peak voltage.
5.1.3 Power Fail Monitor Input
An analog input (PFMON) is provided to determine
when a power loss is imminent. By connecting a resis-
tive divider from the unregulated meter power supply to
the PFMON input, an interrupt can be generated, or the
Low Supply Detected (LSD) Status register bit can be
monitored to indicate low-supply conditions. The PF-
MON input has a comparator that trips around the level
of the voltage reference input (VREFIN).
5.1.4 Voltage Reference Input
The CS5464 requires a stable voltage reference of
2.5 V applied to the VREFIN pin. This reference can be
supplied from an external voltage reference or from the
VREFOUT output. A bypass capacitor of at least 0.1 ? F
is recommended at the VREFIN pin.
5.1.5 Voltage Reference Output
The CS5464 generates a 2.5 V reference (VREFOUT).
It is suitable for driving the VREFIN pin, but has very lit-
tle fan-out and is not recommended for driving external
circuits.
DS682F3
Figure 6. Oscillator Connections
Alternatively, an external clock source can be connect-
ed to the XIN pin.
5.2 Digital Pins
5.2.1 Reset Input
The active-low RESET pin, when asserted, will halt all
CS5464 operations and reset internal hardware regis-
ters and states. When de-asserted, an initialization se-
quence begins, setting default register values.
5.2.2 CPU Clock Output
A logic-level clock output (CPUCLK) is provided at the
crystal frequency to drive an external CPU or microcon-
troller clock. Two phase choices are available.
5.2.3 Interrupt Output
The INT pin indicates an enabled Internal Status regis-
ter ( Status ) bit is set. Status register bits indicate condi-
tions such as data ready, modulator oscillations, low
supply, voltage sag, current faults, numerical overflows,
and result updates.
5.2.4 Energy Pulse Outputs
The CS5464 provides three pins (E1, E2, E3) for pulse
energy outputs. These pins can also be used to output
other conditions, such as voltage sign, power fail moni-
tor, or energy channel in use.
17
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CDB5464U-Z | 制造商:Cirrus Logic 功能描述:EVAL BD PB-FREE DEMO BOARD FOR CS5464 - Boxed Product (Development Kits) 制造商:Cirrus Logic 功能描述:Eval Board |
| CDB5466U | 功能描述:数据转换 IC 开发工具 Eval Bd F/Residental Pow-Meter Apps RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| CDB5466U-Z | 制造商:Cirrus Logic 功能描述:PB-FREEEVAL BOARD FOR CS5466 WITH USB - Bulk |
| CDB5467U | 功能描述:数据转换 IC 开发工具 Eval Bd 4-Ch Sngl-Phs Pow/Energy RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| CDB5471 | 制造商:Cirrus Logic 功能描述:Tools Development kit Kit Con |
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