ST5090TQFPTR 查看數據表（PDF） - STMicroelectronics

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ST5090TQFPTR

LOW VOLTAGE 14-BIT LINEAR CODEC WITH HIGH-PERFORMANCE AUDIO FRONT-END

STMicroelectronics 

ST5090

TRANSMISSION CHARACTERISTICS (continued)

AMPLITUDE RESPONSE (Maximum, Nominal, and Minimum Levels)

Receive path - Absolute levels at VFR (Differentially measured)

0 dBM0 level

Parameter

0 dBM0 level

Test Condition

Receive Amp programmed for

0dB gain

Receive Amp programmed for

- 30dB attenuation

Min .

Typ.

1.965

Max.

Unit

VRMS

61.85

mVRMS

AMPLITUDE RESPONSE (Maximum, Nominal, and Minimum Levels)

Receive path - Absolute levels at VLr (Differentially measured)

0 dBM0 level

Parameter

0 dBM0 level

Test Condition

Receive Amp programmed for

0dB gain

Receive Amp programmed for

- 30dB gain

Min .

Typ.

1.965

Max.

Unit

VRMS

61.85

mVRMS

AMPLITUDE RESPONSE

Transmit path

Symbol

GXA

Parameter

Transmit Gain Absolute

Accuracy

GXAG

Transmit Gain Variation with

programmed gain

GXAT

GXAV

GXAF

Transmit Gain Variation with

temperature

Transmit Gain Variation with

supply

Transmit Gain Variation with

frequency

GXAL

Transmit Gain Variation with

signal level

Test Condition

Min. Typ. Max. Unit

Transmit Gain Programmed for -0.5

maximum.

Measure deviation of Digital

PCM Code from ideal 0dBm0

PCM code at DX

Measure Transmit Gain over

-0.5

the range from Maximum to

minimum setting.

Calculate the deviation from

the programmed gain relative

to GXA,

i.e. GAXG = G actual - G prog. - GXA

Measured relative to GXA.

-0.1

min. gain < GX < Max. gain

Measured relative to GXA

-0.1

GX = Maximum gain

Relative to 1015,625 Hz,

multitone test technique used.

min. gain < GX < Max. gain

f = 60 Hz

f = 100 Hz

f = 200 Hz

f = 300 Hz

-1.5

f = 400 Hz to 3000 Hz

-0.5

f = 3400 Hz

-1.5

f = 4000 Hz

f = 4600 Hz (*)

f = 8000 Hz (*)

0.5

dB

0.5

dB

0.1

dB

0.1

dB

-30

dB

-20

dB

-6

dB

0.5

dB

0.5

dB

0.0

dB

-14

dB

-35

dB

-47

dB

Sinusoidal Test method.

Reference Level = -10 dBm0

VMIC = -40 dBm0 to +3 dBm0

-0.5

VMIC = -50 dBm0 to -40 dBm0

-0.5

VMIC = -55 dBm0 to -50 dBm0 -1.2

0.5

dB

0.5

dB

1.2

dB

(*) The limit at frequencies between 4600Hz and 8000Hz lies on a straight line connecting the two frequencies on a linear (dB) scale versus log

(Hz) scale.

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