¡ Semiconductor

MSM7728

12/23

AC Characteristics (Continued)

*1 Psophometric filter is used.

*2 AVT is the input level to output 0dBm0 pattern. VOL1 0dB setting.

*3 VOL2 0dB setting

*4 The minimum value of group delay distortion is referenced.

Condition

Parameter

Symbol

Min.

Typ.

Max.

Unit

Level

(dBm0)

Freq.

(Hz)

3

–10

–40

–50

–55

Transmit Gain Tracking

(Expected Value)

GT T1

–0.3

+0.01

+0.3

GT T2

Reference value

GT T3

1020

–0.3

0.0

+0.3

dB

GT T4

–0.6

–0.03

+0.6

GT T5

–1.2

+0.15

+1.2

Receive Gain Tracking

(Expected Value)

GT R1

–0.3

–0.06

+0.3

GT R2

Reference value

GT R3

1020

–0.3

–0.02

+0.3

dB

GT R4

–0.6

–0.02

+0.6

GT R5

–1.2

–0.27

+1.2

3

–10

–40

–50

–55

3

–10

–40

–50

–55

Overall Gain Tracking

GT 1

–0.4

+0.01

+0.4

GT 2

Reference value

GT 3

1020

–0.4

0.0

+0.4

dB

GT 4

–1.0

–0.03

+1.0

GT 5

–1.5

+0.15

+1.5

Nidle T

—

—

–72

–68

dBmOp

NidleR

—

–76

Absolute Delay

AV Tt

–0.2

—

+0.2

AV Rt

–0.2

—

+0.2

1020

—

—

0.6

ms

0

A to A

BCLK

= 128 kHz

Transmit Group Delay

—

—

0.325

—

—

0.175

0ms

*4

—

—

0.325

Receive Group Delay

—

0.00

0.125

ms

0

—

0.12

0.325

—

–74

Transmit Idle Channel Noise

(Expected Value)

—

—

AIN: no signal

*1

dB

dB

to 3.6 V

Ta = –30

to +85°C

Output Level

(Deviation of Temperature and Power)

500

600 to 2600

2800

Crosstalk Attenuation

CR T

7585—

CR R

80

1020

dB

0

TRANS Æ RECV

RECV Æ TRANS

2800

*4

70

—

Receive Idle Channel Noise

(Expected Value)

500 to 2600

1020

0.275

0.245

0.309

0

Output Level

(Initial value)

AV T

0.350

0.312

0.393

MAO-PCMOUT

PCMIN-SPKP

PCMIN-EAR

Vrms

*3

*3

Analog to

Analog

*2