Sim2 M80 Dokumentacja Pobierz pdf (Strona 59)

M80 Hardware Design

M80_HD_V1.0 - 59 -

3.10.6. Audio characteristics

Table 13: Typical electret microphone characteristics

Parameter

Min

Typ

Max

Unit

Working Voltage

1.2

1.5

2.0

Working Current

200

500

External

Microphone

Load Resistance

2.2

k Ohm

Table 14: Typical speaker characteristics

Parameter

Min

Typ

Max

Unit

Normal Output

(AOUT1)

Single

Ended

Load

Resistance

Ohm

Ref level

2.4

Vpp

Differential

Load

Resistance

Ohm

Ref level

4.8

Vpp

Auxiliary

Output

(AOUT2)

Single

Ended

Load

Resistance

Load

Resistance

Ref level

2.4

Vpp

Output

(AOUT3)

Differential

Load

Resistance

Load

Resistance

Ref level

2*VBAT

Vpp

3.11. SIM card interface

3.11.1. SIM card application

The SIM interface supports the functionality of the GSM Phase 1 specification and also supports

the functionality of the new GSM Phase 2+ specification for FAST 64 kbps SIM card, which is

intended for use with a SIM application Tool-kit.

The SIM interface is powered from an internal regulator in the module. Both 1.8V and 3.0V SIM

Cards are supported.

Quectel

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Quectel Cellular Engine 1
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