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参数资料
| 型号： | TCM320AC46DW |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO20 |
| 文件页数： | 3/19页 |
| 文件大小： | 246K |
| 代理商： | TCM320AC46DW |
TCM320AC46
GENERAL-PURPOSE AUDIO INTERFACE FOR DSP
SLWS001 – D4091, JUNE 1993
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
11
transmit gain and dynamic range, companded or linear mode,
-law or A-law, VCC = 5 V, TA = 25°C (unless
otherwise noted) (see Notes 5 and 6)
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
Transmit reference signal level (0 dB) (see Note 7)
Linear mode selected
1.001
Vrms
Transmit reference-signal level (0 dB) (see Note 7)
Companded mode selected,
-law
0.982
Vrms
Overload signal level
Linear mode selected
4
VPP
Overload-signal level
Companded mode selected,
-law
4
VPP
Absolute gain error
0-dB input signal
±2
dB
MICIN to DOUT at 3 dBm0 to – 40 dBm0
±0.8
Gain error with input level relative to gain at –10 dB
MICIN to DOUT at – 41 dBm0 to – 50 dBm0
±2
dB
MICIN to DOUT at – 51 dBm0 to – 55 dBm0
±2.5
Gain variation
VCC ± 10%,
TA = 0°C to 70°C
±0.5
dB
transmit filter transfer, linear mode or
-law selected, over recommended ranges of supply voltage and
free-air temperature, CLK = 2.048 MHz, FSX = 8 kHz (see Note 6)
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
Input signal = 50 Hz
–10
0
Input signal = 200 Hz
–1.8
0
Gi
lti
t i
l
i
t
Input amplifier set for unity gain,
Input signal = 300 Hz to 3 kHz
±0.35
Gain relative to input signal gain at
1 02 kHz
In ut am lifier set for unity gain,
noninverting maximum gain output signal
Input signal = 3.3 kHz
– 0.55
0.2
dB
1.02 kHz
at MICIN is 0 dB
Input signal = 3.4 kHz
– 2.8
0
Input signal = 4 kHz
–11
Input signal
≥4.6 kHz
–30
transmit idle channel noise and distortion, companded mode,
-law, over recommended ranges of supply
voltage and operating free-air temperature (see Note 8)
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
Transmit noise, C-message weighted
MICIN connected to MICGS through a 10-k
resistor
27
dBrnC0
MICIN to DOUT at 0 dBm0 to – 30 dBm0
32
Transmit signal-to-distortion ratio with sine-wave input
MICIN to DOUT at – 31 dBm0 to – 40 dBm0
25
dB
MICIN to DOUT at– 41 dBm0 to – 45 dBm0
18
transmit idle channel noise and distortion, linear mode, over recommended ranges of supply voltage and
operating free-air temperature (see Notes 6 and 8)
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
Transmit noise
MICIN connected to MICGS through a 10-k
resistor
–60
dB
MICIN to DOUT at 0 dBm0 to – 6 dBm0
47
MICIN to DOUT at – 7 dBm0 to – 12 dBm0
42
Transmit signal-to-distortion ratio with sine-wave input
MICIN to DOUT at – 13 dBm0 to – 18 dBm0
38
dB
MICIN to DOUT at – 19 dBm0 to – 24 dBm0
30
MICIN to DOUT at – 25 dBm0 to – 45 dBm0
15
NOTES: 5. Unless otherwise noted, the analog input is 0 dB, 1020-Hz sine wave, where 0 dB is defined as the zero-reference point of the channel
under test.
6. The input amplifier is set for inverting unity gain.
7. This reference-level signal, which is input to the transmit channel, is defined as a value 3 dB below the full-scale value of 2 V.
8. Transmit noise, linear mode: 200
Vrms is equivalent to –74 dB (referenced to device 0-dB level).
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