參數(shù)資料
型號(hào)： TCM320AC37N
廠(chǎng)商： Texas Instruments, Inc.
英文描述： VOICE-BAND AUDIO PROCESSORS VBAPE
中文描述： 語(yǔ)音頻帶音頻處理器VBAPE
文件頁(yè)數(shù)： 9/23頁(yè)
文件大?。?/td> 317K
代理商： TCM320AC37N
TCM320AC36, TCM320AC37
VOICE-BAND AUDIO PROCESSORS (VBAP
)
SLWS003C – MAY 1992 – REVISED APRIL – 1998
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
receive idle channel noise and distortion, companded mode with
μ
-
law or A-law selected, over recommended
ranges of supply voltage and operating free-air temperature (see Note 9)
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
Receive noise, psophometrically weighted
DIN = 11010101 (A-law)
DIN = 11111111 (
μ
-law)
DIN to EARA and EARB at 0 dBm0 to –18 dBm0
– 75
dB0p
Receive noise, C-message weighted
5
dBrnc0
36
DIN to EARA and EARB at –19 dBm0 to –24 dBm0
34
Receive signal-to-distortion ratio with sine-wave input
DIN to EARA and EARB at –25 dBm0 to –30 dBm0
30
dB
DIN to EARA and EARB at –31 dBm0 to –38 dBm0
23
DIN to EARA and EARB at –39 dBm0 to –45 dBm0
17
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.
receive idle channel noise and distortion, linear mode selected, over recommended ranges of supply voltage
and operating free-air temperature (see Notes 9 and 12)
PARAMETER
TEST CONDITIONS
MIN
MAX
200
UNIT
μ
Vrms
Receive noise, C-message weighted
DIN = 00000000
DIN to EARA and EARB at 0 dBm0 to –6 dBm0
DIN to EARA and EARB at –7 dBm0 to –12 dBm0
DIN to EARA and EARB at –13 dBm0 to –18 dBm0
DIN to EARA and EARB at –19 dBm0 to –24 dBm0
DIN to EARA and EARB at –25 dBm0 to –40 dBm0
DIN to EARA and EARB at –41 dBm0 to –45 dBm0
CCITT G.712 (7.1), R2
CCITT G.712 (7.2), R3
50
48
38
32
18
15
50
54
Receive signal to distortion ratio with sine wave input
Receive signal-to-distortion ratio with sine-wave input
dB
Intermodulation, 2-tone CCITT distortion method,
composite power level –13 dBm0
dB
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.
12. Receive noise, linear mode: 200
μ
Vrms is equivalent to –71 dB (referenced to device 0-dB level).
power supply rejection and crosstalk attenuation over recommended ranges of supply voltage and
operating free-air temperature
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Supply voltage rejection, transmit channel
Idle channel, supply signal = 100 mVrms,
f = 0 to 30 kHz (measured at DOUT)
Idle channel, supply signal = 100 mVrms,
EARGS connected to EARB,
f = 0 to 30 kHz (measured differentially between EARA
and EARB)
MICIN = 0 dB, f = 1.02 kHz, unity transmit gain,
EARGS connected to EARB,
measured differentially between EARA and EARB
DIN = 0 dBm0, f = 1.02 kHz, unity transmit
gain, measured at DOUT
–30
dB
Supply voltage rejection, receive channel
–30
dB
Crosstalk attenuation, transmit-to-receive
(differential)
68
dB
Crosstalk attenuation, receive-to-transmit
68
dB
All typical values are at VCC = 5 V, TA = 25
°
C.
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