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TCM320AC36PT Datasheet(PDF) 8 Page - Texas Instruments |
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TCM320AC36PT Datasheet(HTML) 8 Page - Texas Instruments |
8 / 23 page 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 UNIT Transmit noise, C-message weighted MICIN connected to MICGS through a 10-k Ω resistor 200 µVrms MICIN to DOUT at – 6 dBm0 50 MICIN to DOUT at – 12 dBm0 48 Transmit signal-to-distortion ratio with sine-wave input MICIN to DOUT at – 18 dBm0 40 dB Transmit signal-to-distortion ratio with sine-wave in ut MICIN to DOUT at – 24 dBm0 35 dB MICIN to DOUT at – 40 dBm0 20 MICIN to DOUT at – 45 dBm0 18 NOTES: 6. The input amplifier is set for inverting unity gain. 8. Transmit noise, linear mode: 200 µVrms 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, VCC = 5 V, TA = 25°C (unless otherwise noted) (see Notes 9 and 10) PARAMETER TEST CONDITIONS MIN MAX UNIT Companded mode selected, µ-law (’AC36) 0.736 Receive reference-signal level (0 dB) (see Note 11) Companded mode selected, A-law (’AC37) 0.739 Vrms Linear mode selected (’AC36 and ’AC37) 0.751 Companded mode selected, µ-law (’AC36) 3 Overload-signal level Companded mode selected, A-law (’AC37) 3 Vpp Linear mode selected (’AC36 and ’AC37) 3 Absolute gain error 0-dB input signal ±1 dB DIN to EARA and EARB at 3 dBm0 to – 36 dBm0 ±0.5 Gain error with output level relative to gain at –10 dBm0 DIN to EARA and EARB at – 37 dBm0 to – 40 dBm0 ±1 dB Gain error with out ut level relative to gain at –10 dBm0 DIN to EARA and EARB at – 41 dBm0 to – 50 dBm0 ±1.5 dB DIN to EARA and EARB at – 51 dBm0 to – 55 dBm0 ±2 Gain variation VCC ±10%, TA = 0°C to 70°C ±0.5 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. 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. 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 MIN MAX UNIT fDIN = < 200 Hz 0.15 fDIN = 200 Hz – 0.5 0.15 fDIN = 300 Hz to 3 kHz ±0.15 Gain relative to gain at 1.02 kHz DIN = 0 dBm0 fDIN = 3.3 kHz – 0.35 0.03 dB fDIN = 3.4 kHz –1 – 0.18 fDIN = 4 kHz –14 fDIN = > 4.6 kHz –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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