- 您现在的位置：买卖IC网 > PDF目录20610 > 71M6545-IGTR/F (Maxim Integrated)IC ENERGY METER 3PHASE 64LQFP PDF资料下载
参数资料
| 型号： | 71M6545-IGTR/F |
| 厂商： | Maxim Integrated |
| 文件页数： | 17/133页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METER 3PHASE 64LQFP |
| 标准包装： | 1,500 |
| 系列： | * |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页当前第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页
71M6545/71M6545H Data Sheet
IADC2-IADC3, IADC4-IADC5 and IADC6-IADC7 current inputs are configured as remote sensor digital
interfaces and the corresponding samples are not routed through the multiplexer. For this configuration,
the multiplexer sequence is as shown in Figure 4 .
For a poly-phase configuration with optional neutral current sensing using Current Transformer (CTs)
sensors, as shown in Figure 3 , all four current sensor inputs must be configured as a differential inputs,
to be connected to their corresponding CTs (see Figure 25 for the differential CT connection details). The
IADC0-IADC1 current sensor input is optionally used to sense the Neutral current for anti-tampering
purposes. The voltage sensors (VADC8, VADC9 and VADC10) are directly connected to the 71M6545/H
(see Figure 23 for the voltage sensor connection details). No 71M6xx3 isolated sensors are used in this
configuration and all sensors are routed through the multiplexer, as seen in Figure 3 . For this
configuration, the multiplexer sequence is as shown in Figure 5 .
The multiplexer sequence shown in Figure 4 , covers the shunt configuration shown in Figure 2 . The
frame duration is 13 CK32 cycles (where CK32 = 32,768 Hz), therefore, the resulting sample rate is
32,768 Hz / 13 = 2,520.6 Hz. Note that Figure 4 only shows the currents that pass through the
71M6545/H multiplexer, and does not show the currents that are copied directly into CE RAM from the
remote sensors (see Figure 2 ), which are sampled during the second half of the multiplexer frame. The
two unused conversion slots shown are necessary to produce the desired 2,520.6 Hz sample rate.
Multiplexer Frame
CK32
MUX_DIV[3:0] = 6 Conversions
Settle
MUX STATE S
1 Local / 3 Remotes:
0
IN
1
Unused
2
Unused
3
VA
4
VB
5
VC
S
CROSS
MUX_SYNC
Figure 4: States in a Multiplexer Frame ( MUX_DIV[3:0] = 6)
The multiplexer sequence shown in Figure 5 corresponds to the CT configuration shown in Figure 3 .
Since in this case all current sensors are locally connected to the 71M6545/H, all currents are routed
through the multiplexer, as seen in Figure 3 . For this multiplexer sequence, the frame duration is 15 CK32
cycles (where CK32 = 32,768 Hz), therefore, the resulting sample rate is 32,768 Hz / 15 = 2,184.5 Hz.
Multiplexer Frame
CK32
MUX_DIV[3:0] = 7 Conversions
Settle
MUX STATE
S
0
IA
1
VA
2
IB
3
VB
4
IC
5
VC
6
IN
S
CROSS
MUX_SYNC
Figure 5: States in a Multiplexer Frame ( MUX_DIV[3:0] = 7)
Multiplexer advance, FIR initiation and chopping of the ADC reference voltage (using the internal CROSS
signal, see 2.2.7 Voltage References ) are controlled by the internal MUX_CTRL circuit. Additionally,
MUX_CTRL launches each pass of the CE through its code. Conceptually, MUX_CTRL is clocked by
CK32, the 32768 Hz clock from the PLL block. The behavior of the MUX_CTRL circuit is governed by:
?
?
v2
CHOP_E[1:0] ( I/O RAM 0x2106[3:2] )
MUX_DIV[3:0] ( I/O RAM 0x2100[7:4] )
17
相关PDF资料 |
PDF描述 |
|---|---|
| T95S224M035LZAL | CAP TANT 0.22UF 35V 20% 1507 |
| GBC12DCSN-S288 | CONN EDGECARD 24POS .100 EXTEND |
| 78M6612-M/F/P2 | IC PWR MEASUREMENT AC 68SQFN |
| V48C28H75BL2 | CONVERTER MOD DC/DC 28V 75W |
| ISL6613IRZ-T | IC MOSFET DRVR SYNC BUCK 10-DFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6545T-IGT/F | 制造商:Maxim Integrated Products 功能描述:METROLOGY PROCESSORS - Rail/Tube |
| 71M6545T-IGTR/F | 制造商:Maxim Integrated Products 功能描述:3-PHASE AFE, 32KB FLASH, PRES TEMP SENSOR - Tape and Reel |
| 71M6601 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:On-Chip Temperature Sensor Enables Localized Digital Temperature On-Chip Power Monitoring |
| 71M6601-IF | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:On-Chip Temperature Sensor Enables Localized Digital Temperature On-Chip Power Monitoring |
| 71M6601-IL | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:On-Chip Temperature Sensor Enables Localized Digital Temperature On-Chip Power Monitoring |
发布紧急采购，3分钟左右您将得到回复。