71M6541DSLASHFSLASHG datasheet(160/166 Pages) MAXIM

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71M6541D/F/G and 71M6542F/G Data Sheet

160

Rev 5

6.9.2

Analog Pins

Table 120: Analog Pins

(64 pin)

(100-pin)

Name

Type

Circuit

Description

IAP-

IAN

IBP-

IBN

Differential or single-ended Line Current Sense Inputs:

These pins are voltage inputs to the internal A/D

converter. Typically, they are connected to the outputs

of current sensors. Unused pins must be tied to

V3P3A.

Pins IBP-IBN may be configured for communication with

the remote sensor interface (71M6x01). When RMT_E =

1 (I/O RAM 0x2709[3]), the IBP-IBN pins become

balanced differential pair. If unused, RMT_E must be

zero and IBP-IBN must tied to V3P3A.

†

Line Voltage Sense Inputs: These pins are voltage

inputs to the internal A/D converter. Typically, they are

connected to the outputs of resistor dividers. Unused

pins must be tied to V3P3A.

VREF

Voltage Reference for the ADC. This pin should be left

unconnected (floating).

XIN

XOUT

Crystal Inputs: A 32 kHz crystal should be connected

across these pins. Typically, a 15 pF capacitor is also

connected from XIN to GNDA and a

10 pF capacitor is connected from XOUT to GNDA. It

is important to minimize the capacitance between these

pins. See the crystal manufacturer datasheet for details.

If an external clock is used, a 150 mV (p-p) clock signal

should be applied to XIN, and XOUT should be left

unconnected.

† Pin VB only available on 71M6542F/G.

71M6541D/F/G Datasheet(PDF) 160 Page - Maxim Integrated Products

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