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参数资料
| 型号： | 71M6511-IGTR/F |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP64 |
| 封装： | LEAD FREE, LQFP-64 |
| 文件页数： | 94/98页 |
| 文件大小： | 1278K |
| 代理商： | 71M6511-IGTR/F |
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71M6511/71M6511H
Single-Phase Energy Meter IC
DATA SHEET
NOVEMBER 2010
Page: 94 of 98
2005–2010 Teridian Semiconductor Corporation
V2.7
A Maxim Integrated Products Brand
Pin Descriptions
Power/Ground Pins
Name
Pin #
Type
Description
GNDA
49, 58
P
Analog ground: This pin should be connected directly to the ground plane.
GNDD
1
P
Digital ground: This pin should be connected directly to the ground plane.
V3P3A
50
P
Analog power supply: A 3.3V power supply should be connected to this pin.
V3P3D
9
P
Digital power supply: A 3.3V power supply should be connected to this pin.
VBAT
46
P
Battery backup power supply. A battery or super-capacitor should be connected between
VBAT and GNDD. If no battery is used, connect VBAT to V3P3D.
V2P5
47
O
Output of the internal 2.5V regulator. A 0.1F capacitor to GNDA should be connected to this
pin.
VLCD
62
P
LCD power supply. A DC source of 3.3V to 5.0V should be connected to this pin.
Analog Pins
Name
Pin #
Type
Circuit
Description
IA
54
I
6
Line Current Sense Input: This pin is a voltage input to the internal A/D converter.
Typically, it is connected to the output of a current transformer or shunt resistor. If
the pin is unused it must be connected to V3P3A or tied to the IB pin.
VA
51
I
6
Line Voltage Sense Input: This pin is a voltage input to the internal A/D converter.
Typically, it is connected to the output of a resistor divider. If the pin is unused it
must be tied to V3P3A.
IB
53
I
6
Line Current Sense Input: This pin is a voltage input to the internal A/D converter.
Typically, it is connected to the output of a current transformer or shunt resistor. If
the pin is unused it must be connected to V3P3A or tied to the IA pin.
V1
56
I
7
Comparator Input: This pin is a voltage input to the internal comparator. The voltage
applied to the pin is compared to an internal reference voltage of 1.5V. If the input
voltage is above the reference, the comparator output will be high (1). If the
comparator output is low, a voltage fault will occur. See the precautions in the
Applications Section for terminating this pin.
VREF
55
O
9
Voltage Reference for the ADC. A 0.1F capacitor to GNDA should be connected to
this pin.
VBIAS
52
O
9
This pin outputs the reference voltage used by the power fault detection circuit. A
1,000pF capacitor to GND should be connected to this pin.
XIN
XOUT
59
61
I
8
Crystal Inputs: A 32kHz style crystal should be connected across these pins.
Typically, a 20pF capacitor is also connected from each pin to GNDA. It is important
to minimize the capacitance between these pins. See the crystal manufacturer
datasheet for details.
VDRV
7
O
4
Voltage boost output.
Pin types: P = Power, O = Output, I = Input, I/O = Input/Output
The circuit number denotes the equivalent circuit, as specified under “I/O Equivalent Circuits”.
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| 71M6511-IGT/F | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP64 |
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