Characteristics

EMIF02-MIC07F3

2/8

Doc ID 17052 Rev 3

1

Characteristics

Figure 2.

Configuration

Acc_Det pin connection

The Acc_Det pin (accessory detection) is an input pin for the audio pre-amplifier chip which

detects the voltage of the microphone line MIC2P in case the user presses the on-hook/off-

hook button on the headset. When the user selects off-hook using the headset button, the

MIC2P is shorted to MIC2N which is grounded. If your design does not support the Acc_Det

feature, the Acc_Det pin must be left open (not connected).

Table 1.

Absolute ratings (limiting values)

Symbol

Parameter and test conditions

Value

Unit

Pins B1 and C1, ESD discharge IEC 61000-4-2, level 4:

air discharge

contact discharge

Pins A2, A3, B3, C3, ESD discharge IEC 61000-4-2, level 1

air discharge

contact discharge

15

8

2

2

kV

60

mW

Operating temperature range

- 40 to + 85

°C

Storage temperature range

- 55 to + 150

°C

GND

GND

GND

GND

GND

GND

GND

B1

C1

C3

B3

A3

A2

B2 and C2 are ground bumps and must be connected together

to ASIC

C12

C11

C21

C22

R11

R21

R31

R22

R12

Mic Bias

Mic2p

Mic2n

C31

C32

Acc_Det