78m6613-imr/f/p Maxim Integrated Products, Inc., 78m6613-imr/f/p Datasheet - Page 29

• Manufacturer Part Number: 78m6613-imr/f/p
• Description: Single-phase Ac Power Measurement Ic
• Manufacturer: Maxim Integrated Products, Inc.

DS_6613_018
6
6.1 Power/Ground Pins
6.2 Analog Pins
Rev. 1.0
Name
GNDA
GNDD
V3P3A
V3P3D
Name
A0, A1,
A2, A3
VREF
XIN
XOUT
Pin Descriptions
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”.
Type
Type
O
P
P
I
I
Circuit
Circuit
–
–
5
8
7
Description
These pins should be connected directly to the ground plane.
Description
Sense Inputs: These pins are voltage inputs to the internal A/D
converter. Typically, they are connected to either the outputs of
current sensors or the outputs of resistor dividers (voltage sensors).
Unused pins must be connected to V3P3.
Voltage Reference for the ADC. This pin is left unconnected. Never
use as an external reference.
Crystal Inputs. A 32 kHz crystal should be connected across these
pins. Typically, a 27 pF capacitor is also connected from each pin to
GND. It is important to minimize the capacitance between these
pins. See the crystal manufacturer datasheet for details.
A 3.3V power supply should be connected to these pins.
78M6613 Data Sheet
29