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MAX71020
Single-Chip Electricity Meter AFE
Pin Description
(Pin types: P = Power, O = Output, I = Input, I/O = Input/Output. The circuit number denotes the equivalent circuit, as
specified under Figure 1 ).
PIN
NAME
TYPE
CIRCUIT
DESCRIPTION
POWER AND GROUND PINS
2
3
12
23
24
GNDA
V 3P3A
GNDD
V DD
V 3P3SYS
P
P
P
O
P
—
—
—
—
—
Analog Ground. GNDA should be connected directly to the ground plane.
Analog Power Supply. A 3.3V power supply should be connected to
V 3P3A . V 3P3A must be the same voltage as V 3P3SYS .
Digital Ground. GNDD should be connected directly to the ground plane.
Output of the 1.8V Regulator. A 0.1μF bypass capacitor to ground
should be connected to this pin.
System 3.3V Supply. V 3P3SYS should be connected to a 3.3V power
supply.
ANALOG PINS
7, 6
5, 4
IAP, IAN
IBP, IBN
I
6
Differential or Single-Ended Line Current-Sense Inputs. These pins are
voltage inputs to the internal ADC. Typically, these pins are connected
to the outputs of current sensors. Unused pins must be tied to GNDA .
Line Voltage Sense Inputs. VA/VB are voltage inputs to the internal
1, 28
VA, VB
I
6
ADC. Typically, the pins are connected to the outputs of resistor-
dividers. Unused pins must be tied to GNDA .
25
26
XIN
XOUT
I
O
8
Crystal Inputs. A 9.8304MHz crystal should be connected to XIN and
XOUT.
DIGITAL PINS
22
21
20
11
8, 27
9
13
14
15
16
19
DIO0/WPULSE
DIO1/VPULSE
DIO2/XPULSE
DIO3/YPULSE
TEST, TEST0
RESETZ
SPI_CSZ
SPI_DO
SPI_DI
SPI_CLK
INTZ
I/O
I
I
I
O
I
I
O
3, 4
3
3
3
4
3
3
4
Multiple-Use Pins. Configurable as DIO. Alternative functions with
proper selection of associated registers are:
DIO0 = WPULSE
DIO1 = VPULSE
Connect to GNDD
Active-Low Reset
SPI Interface
Active-Low Interrupt Request
OTHER PIN
10
V PP
I
—
Connect to GNDD
Maxim Integrated
7
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相关代理商/技术参数
MAX71020AEUI+R 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Single-Chip Electricity Meter AFE
MAX710C/D 功能描述:直流/直流开关转换器 3.3V/5V or Adjustable Step-Up Step-Down DC-DC Converters RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX710C/D DIE 制造商:Maxim Integrated Products 功能描述:
MAX710ESE 功能描述:直流/直流开关转换器 3.3/5V or Adjustable Step-Up Step-Down RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX710ESE+ 功能描述:直流/直流开关转换器 3.3/5V or Adjustable Step-Up Step-Down RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX710ESE+ 制造商:Maxim Integrated Products 功能描述:CONVERTOR DC/DC ((NW))
MAX710ESE+T 功能描述:直流/直流开关转换器 3.3/5V or Adjustable Step-Up Step-Down RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX710ESE-T 功能描述:直流/直流开关转换器 3.3/5V or Adjustable Step-Up Step-Down RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT