Characteristics

EMIF06-AUD01F2

4/14

1.1

RF filtering

The low signal level on the analog inputs and the pulsed transmitter in the phone are a

combination that requires efficient RF-filtering. RF-rectification must be avoided.

Therefore, the stop band attenuation is optimized for the frequency bands 800-2480 MHz.

1.2

Attenuation characteristics

Table 4.

Stop band performance 800 - 2480 MHz

Channel

Test conditions

Attenuation

Min

Typ

Max

Unit

MIC1_x to MIC1_x-int

25

dB

MIC2_x to MIC2_x-int

25

dB

MIC1_P to BIAS1

25

dB

MIC2_P to BIAS2

25

dB

SPK_x to SPK_x-int

25

dB

Table 5.

Stop band performance 10 - 800 MHz

Channel

Test conditions

Attenuation

Min

Typ

Max

Unit

MIC1_x to MIC1_x-int

20

dB

MIC2_x to MIC2_x-int

20

dB

MIC1_P to BIAS1

20

dB

MIC2_P to BIAS2

20

dB

Figure 3.

S21 attenuation measurement

MIC1_P and MIC1_N lines

(50

Ω / 50 Ω)

Figure 4.

S21 attenuation measurement

MIC1_P and MIC1_N lines

(50

Ω / 1 KΩ simulation)

100.0k

1.0M

10.0M

100.0M

1.0G

-60.00

-50.00

-40.00

-30.00

-20.00

-10.00

0.00

dB

MIC1_P line

MIC1_N line

F/Hz

R

= 50

/ R

= 50

source

load

ΩΩ

MIC1_P line

MIC1_N line

R

= 50

/ R

= 1 K

source

load

ΩΩ

100k

1M

10M

100M

1G

-60

-50

-40

-30

-20

-10

0

dB

F/Hz