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參數(shù)資料
| 型號： | TCM320AC37N |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | VOICE-BAND AUDIO PROCESSORS VBAPE |
| 中文描述： | 語音頻帶音頻處理器VBAPE |
| 文件頁數(shù)： | 8/23頁 |
| 文件大?。?/td> | 317K |
| 代理商： | TCM320AC37N |
TCM320AC36, TCM320AC37
VOICE-BAND AUDIO PROCESSORS (VBAP
)
SLWS003C – MAY 1992 – REVISED APRIL – 1998
8
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
transmit idle channel noise and distortion, linear mode selected, over recommended ranges of supply
voltage and operating free-air temperature (see Notes 6 and 8)
PARAMETER
TEST CONDITIONS
MIN
MAX
200
UNIT
μ
Vrms
Transmit noise, C-message weighted
MICIN connected to MICGS through a 10-k
resistor
MICIN to DOUT at –6 dBm0
MICIN to DOUT at –12 dBm0
MICIN to DOUT at –18 dBm0
MICIN to DOUT at –24 dBm0
MICIN to DOUT at –40 dBm0
MICIN to DOUT at –45 dBm0
50
48
40
35
20
18
Transmit signal-to-distortion ratio with sine-wave input
Transmit signal-to-distortion ratio with sine-wave in ut
dB
NOTES:
6. The input amplifier is set for inverting unity gain.
8. Transmit noise, linear mode: 200
μ
Vrms is equivalent to –74 dB (referenced to device 0-dB level).
receive gain and dynamic range, companded mode (
μ
-law or A-law) or linear mode selected, V
CC
= 5 V,
T
A
= 25
°
C (unless otherwise noted) (see Notes 9 and 10)
PARAMETER
Companded mode selected,
μ
-law (’AC36)
Receive reference-signal level (0 dB) (see Note 11)
Companded mode selected, A-law (’AC37)
Linear mode selected (’AC36 and ’AC37)
Companded mode selected,
μ
-law (’AC36)
Overload-signal level
Companded mode selected, A-law (’AC37)
Linear mode selected (’AC36 and ’AC37)
Absolute gain error
0-dB input signal
DIN to EARA and EARB at 3 dBm0 to –36 dBm0
DIN to EARA and EARB at –37 dBm0 to –40 dBm0
Gain error with out ut level relative to gain at –10 dBm0
DIN to EARA and EARB at –41 dBm0 to –50 dBm0
DIN to EARA and EARB at –51 dBm0 to –55 dBm0
Gain variation
VCC
±
10%,
NOTES:
9. Receive output is measured differentially in the maximum gain configuration. To set the output amplifier for maximum gain, EARGS
is connected to EARB and the output is taken between EARA and EARB. All output levels are (sin x)/x corrected.
10. Unless otherwise noted, the digital input is a word stream generated by passing a 0-dB sine wave at 1020 Hz through an ideal
encoder, where 0 dB is defined as the zero reference.
11. This reference-signal level is measured at the speaker output of the receive channel with the gain of the output speaker amplifier
set to unity.
TEST CONDITIONS
MIN
MAX
0.736
0.739
0.751
UNIT
Vrms
3
3
3
Vpp
±
1
dB
±
0.5
±
1
±
1.5
±
2
±
0.5
Gain error with output level relative to gain at –10 dBm0
dB
TA = 0
°
C to 70
°
C
dB
receive filter transfer, companded mode (
μ
-law or A-law) or linear mode selected, over recommended ranges
of supply voltage and operating free-air temperature, FSR = 8 kHz (see Note 9)
PARAMETER
TEST CONDITIONS
fDIN = < 200 Hz
fDIN = 200 Hz
fDIN = 300 Hz to 3 kHz
fDIN = 3.3 kHz
fDIN = 3.4 kHz
fDIN = 4 kHz
fDIN = > 4.6 kHz
MIN
MAX
0.15
UNIT
–0.5
0.15
±
0.15
0.03
Gain relative to gain at 1.02 kHz
DIN = 0 dBm0
–0.35
dB
–1
–0.18
–14
–30
NOTE 9. Receive output is measured differentially in the maximum gain configuration. To set the output amplifier for maximum gain, EARGS is
connected to EARB and the output is taken between EARA and EARB. All output levels are (sin x)/x corrected.
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