TCM29C23_12 Datasheet, PDF (7/20 Pages) Texas Instruments – VARIABLE-FREQUENCY PCM OR DSP INTERFACE

TCM29C23, TCM129C23
VARIABLE-FREQUENCY PCM OR DSP INTERFACE
SCTS029B − AUGUST 1989 − REVISED NOVEMBER 1996
power-supply rejection and crosstalk attenuation over recommended ranges of supply voltage
and operating free-air temperature
PARAMETER
TEST CONDITIONS
V_CC supply-voltage rejection ratio,
transmit channel
0 ≤ f < 30 kHz ^{Idle channel,}
Supply signal = 200 mV peak to peak,
30 ≤ f < 50 kHz _{f measured at PCM OUT}
V_BB supply-voltage rejection ratio,
transmit channel
0 ≤ f < 30 kHz ^{Idle channel,}
Supply signal = 200 mV peak to peak,
30 ≤ f < 50 kHz _{f measured at PCM OUT}
V_CC supply-voltage rejection ratio, receive
channel (single ended)
0 ≤ f < 30 kHz ^{Idle channel,}
Supply signal = 200 mV peak to peak,
30 ≤ f < 50 kHz _{f measured at PWRO +}
V_BB supply-voltage rejection ratio, receive
channel (single ended)
0 ≤ f < 30 kHz ^{Idle channel,}
Supply signal = 200 mV peak to peak,
30 ≤ f < 50 kHz _{Narrow-band, f measured at PWRO +}
Crosstalk attenuation, transmit to receive (single ended)
ANLG IN+ = 0 dBm0,
f = 1.02 kHz,
Unity gain,
PCM IN = lowest decode level,
Measured at PWRO +
Crosstalk attenuation, receive to transmit (single ended)
PCM IN = 0 dBm0,
Measured at PCM OUT
† _{All typical values are at VBB = − 5 V, VCC = 5 V, and TA = 25°C.}
f = 1.02 kHz,
MIN TYP^†
− 30
− 45
MAX
UNIT
dB
− 30
dB
− 55
− 20
dB
− 45
− 20
dB
− 45
68
dB
68
dB
distortion over recommended ranges of supply voltage and operating free-air temperature
PARAMETER
Transmit signal-to-distortion ratio, sinusoidal input
(CCITT G.712 − Method 2)
Receive signal-to-distortion ratio, sinusoidal input
(CCITT G.712 − Method 2)
Transmit single-frequency distortion products
Receive single-frequency distortion products
TEST CONDITIONS
0 ≥ ANLG IN+ ≥ − 30 dBm0
−30 > ANLG IN+ ≥ − 40 dBm0
−40 > ANLG IN+ ≥ − 45 dBm0
0 ≥ ANLG IN+ ≥ − 30 dBm0
−30 > ANLG IN+ ≥ − 40 dBm0
−40 > ANLG IN+ ≥ − 45 dBm0
AT&T Advisory #64 (3.8), Input signal = 0 dBm0
AT&T Advisory #64 (3.8), Input signal = 0 dBm0
MIN MAX UNIT
33
28
dB
23
33
28
dB
23
−40 dBm0
−46 dBm0
transmit filter transfer over recommended ranges of supply voltage and operating free-air
temperature, f_DCLK = 4.096 MHz, FSX/FSR = 16 kHz (see Figure 1)
PARAMETER
Gain relative to gain at 1.02 kHz
TEST CONDITIONS
50 Hz
200 Hz
Input amplifier set for unity gain,
Noninverting maximum gain output,
Input signal at ANLG IN + is 0 dBm0
300 Hz to 6 kHz
6.5 kHz
6.8 kHz
8 kHz
9 kHz and above
MIN
− 10
−1
− 0.5
−4
−6
MAX
0
0.5
0.5
0.3
0
− 12
− 30
UNIT
dB
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