- 您现在的位置：买卖IC网 > Sheet目录1168 > 71M6534H-DB (Maxim Integrated Products)BOARD DEMO 71M6534H
71M6533/G/H and 71M6534/H Data Sheet
Table 3: ADC RAM Locations
FDS_6533_6534_004
Signal Number
0
1
2
3
Address
(HEX)
0x00
0x01
0x02
0x03
Name
IA
VA
IB
VB
Signal Number
5
6
0x0A
0x0B
Address
(HEX)
0x05
0x06
0x0A
0x0B
Name
VC
ID
TEMP
VBAT
4
0x04
IC
1.2.5
Voltage References
The device includes an on-chip precision bandgap voltage reference that incorporates auto-zero techniques.
The reference is trimmed in production to minimize errors caused by component mismatch and drift. The
result is a voltage output with a predictable temperature coefficient.
The amplifier within the reference is chopper stabilized, i.e. the polarity can be switched by the MPU using
CHOP_E[1:0] ( I/O RAM 0x2002[5:4]) . The CHOP_E[1:0] field enables the MPU to operate the chopper
circuit in regular or inverted operation, or in toggling mode. When the chopper circuit is toggled in between
multiplexer cycles, DC offsets on the measured signals will automatically be averaged out.
V inp
V inn
A
B
A
B
+
-
G
A
B
A
B
V outp
V outn
CROSS
Figure 2: General Topology of a Chopped Amplifier
It is assumed that an offset voltage Voff appears at the positive amplifier input. With all switches, as
controlled by CROSS, in the A position, the output voltage is:
Voutp – Voutn = G (Vinp + Voff – Vinn) = G (Vinp – Vinn) + G Voff
With all switches set to the B position by applying the inverted CROSS signal, the output voltage is:
Voutn – Voutp = G (Vinn – Vinp + Voff) = G (Vinn – Vinp) + G Voff, or
Voutp – Voutn = G (Vinp – Vinn) - G Voff
Thus, when CROSS is toggled, e.g. after each multiplexer cycle, the offset will alternately appear on the
output as positive and negative, which results in the offset effectively being eliminated, regardless of its
polarity or magnitude.
When CROSS is high, the connection of the amplifier input devices is reversed. This preserves the overall
polarity of that amplifier gain; it inverts its input offset. By alternately reversing the connection, the
amplifier’s offset is averaged to zero. This removes the most significant long-term drift mechanism in the
voltage reference. The CHOP_E[1:0] field controls the behavior of CROSS. The CROSS signal will reverse
the amplifier connection in the voltage reference in order to negate the effects of its offset. On the first
CK32 rising edge after the last multiplexer state of its sequence, the multiplexer will wait one additional
CK32 cycle before beginning a new frame. At the beginning of this cycle, the value of CROSS will be
updated according to the CHOP_E[1:0] field. The extra CK32 cycle allows time for the chopped VREF to
settle. During this cycle, MUXSYNC is held high. The leading edge of MUXSYNC initiates a pass through
the CE program sequence. The beginning of the sequence is the serial readout of the four RTM words.
12
Rev 2
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
71M6541F-DB
DEMO BOARD 71M6541F
71M6543F-DB-CT
DEMO BOARD 71M6543F-DB-CT
72-CNV-5
CONVERTER RS-232 TO RS-422 5V
72346-001
72346-1-SCA-II REC
72347-001LF
CONN RECEPT SCA2 20POS VERT PCB
72436-001LF
80POS EXT HT. REC SCA-2
72442-201LF
CONN RECEPT SCA2 80POS VERT PCB
72512-001
5 X 12 COVERS
相关代理商/技术参数
71M6534H-IGT/F
功能描述:计量片上系统 - SoC Precision Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel
71M6534H-IGTR/F
功能描述:计量片上系统 - SoC Precision Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel
71M6534H-IGTR/F1
功能描述:计量片上系统 - SoC Precision Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel
71M6534-IGT/F
功能描述:计量片上系统 - SoC Precision Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel
71M6534-IGTR/F
功能描述:计量片上系统 - SoC Precision Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel
71M6541D
制造商:未知厂家 制造商全称:未知厂家 功能描述:71M6541D/71M6541F/71M6541G/71M6542F/71M6542G 是
TeridianTM 的第4 代高集成度单相电表SoC
71M6541D_1111
制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Energy Meter ICs
71M6541D-IGT/F
功能描述:计量片上系统 - SoC Precision Energy Meter IC
RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel