參數(shù)資料
型號(hào)： STW5094AD/LF
廠(chǎng)商： STMICROELECTRONICS
元件分類(lèi)： DAC
英文描述： SERIAL INPUT LOADING, 18-BIT DAC, PBGA36
封裝： 6 X 6 MM, 1.2 MM HEIGHT, TFBGA-36
文件頁(yè)數(shù)： 33/52頁(yè)
文件大小： 596K
代理商： STW5094AD/LF
38/51
VOICE CODEC CHARACTERISTICS
Unless otherwise specified, VCC = 2.7V to 3.3V, Tamb = -30°C to 85°C; FS Frequency = 8kHz; typical
characteristics are specified at VCC =3.0V, Tamb = 25°C, MIC1
2 3 = 0dBm0, DR = -6dBm0 PCM
code, f = 1015.625 Hz; all signals are referenced to GND.
VOICE CODEC AMPLITUDE RESPONSE
Transmit path
(*) 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.
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
GXA
Transmit Gain Absolute Accuracy
Transmit Gain Programmed for
minimum. Measure deviation of
Digital PCM Code from ideal
0dBm0 PCM code at DX
-0.5
0.5
dB
GXAG
Transmit Gain Variation with
programmed gain
Measure Transmit Gain over 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
-0.5
0.5
dB
GXAT
Transmit Gain Variation with
temperature
Measured relative to GXA.
min. gain < GX < Max. gain
-0.1
0.1
dB
GXAV
Transmit Gain Variation with
supply
Measured relative to GXA
GX = Minimum gain
-0.1
0.1
dB
GXAF8
Transmit Gain Variation with
frequency.
FS Frequency = 8kHz (VFS=0)
Digital filter characteristics
f=60 Hz
f = 100 Hz
f = 200 Hz
f = 300 Hz
f = 400 Hz to 3000 Hz
f = 3400 Hz
f = 4000 Hz
f = 4600 Hz (*)
f = 8000 Hz (*)
-1.5
-0.5
-1.5
-30
-20
-6
0.5
0.0
-14
-35
-47
dB
GXAF16
Transmit Gain Variation with
frequency.
FS Frequency = 16kHz (VFS=1)
Digital filter characteristics
f = 100 Hz
f = 200 Hz to 6000 Hz
f = 6800 Hz
f = 8000 Hz
f = 9200 Hz (*)
f = 16000 Hz (*)
-1.5
-0.5
-1.5
0.5
0.0
-14
-35
-47
dB
GXAL
Transmit Gain Variation with
signal level
Sinusoidal Test method.
Reference Level = -10 dBm0
VMIC = -40 dBm0 to +3 dBm0
VMIC = -50 dBm0 to -40 dBm0
VMIC = -55 dBm0 to -50 dBm0
-0.5
-1.2
0.5
1.2
dB
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相關(guān)代理商/技術(shù)參數(shù)
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