User's Guide

4. Electrical specifications

4.1 Power supply specifications

The host system provides the power supply (V_BATT)DC 4 V, 2.5 A to the

device. The internal power supply module manages the power supplied to the

integral circuits and maintains constant voltages. This module also controls

each power block to minimize power consumption.

In particular, the PAM (power amplifier module) consumes a lot of power, so it

receives a direct power supply of 4 V from the V_BATT. Therefore the

V_BATT signal inputs only the supply power of the PAM, even when the

absolute rating is higher. In addition, the entire power input module blocks and

protects against high surges and ESD in the NAD module.

Pin No. Signal Name

Direction

MIN TYP MAX

A7,C7,B8,A9,

B14,A15,B16,

A17

VPH_PWR

(for PAM / for

PMIC

I 3.9 V 4 V 4.1 V

Table 5. Power supply specifications