TCM29C13A Datasheet, PDF (8/25 Pages) Texas Instruments – COMBINED SINGLE-CHIP PCM CODEC AND FILTER

TCM29C13A, TCM29C14A, TCM29C16A, TCM29C17A,
TCM129C13A, TC,129C14A, TCM129C16A, TCM129C17A
COMBINED SINGLE-CHIP PCM CODEC AND FILTER
SCTS030E – AUGUST 1989 – REVISED OCTOBER 1996
noise over recommended ranges of supply voltage and operating free-air temperature range
PARAMETER
Transmit noise, C-message weighted‡
Transmit noise, C-message weighted with 8-bit
signaling (TCM129C14A and TCM29C14A only)
TEST CONDITIONS
ANLG IN+ = ANLG GND, ANLG IN – = GSX
ANLG IN+ = ANLG GND, ANLG IN – = GSX,
6th frame signaling
MIN TYP† MAX UNIT
1
7 dBrnC0
13 dBrnC0
Transmit noise, psophometrically weighted‡
Receive noise, C-message-weighted quiet code
ANLG IN+ = ANLG GND, ANLG IN – = GSX
PCM IN = 11111111 (µ-law),
PCM IN = 10101010 (A-law),
Measured at PWRO +
– 82 – 80 dBm0p
2
5 dBrnC0
Input to PCM IN is zero code with sign bit
Receive noise, C-message-weighted sign bit toggled _{toggled at 1-kHz rate}
3
6 dBrnC0
Receive noise, psophometrically weighted
PCM = lowest positive decode level
– 81 dBm0p
† _{All typical values are at VBB = – 5 V, VCC = 5 V, and TA = 25°C.}
‡ _{This parameter is achieved through the use of patented circuitry and is not recommended for applications in which composite signals on the}
transmit side are below –55 dBm0.
power supply rejection ratio and crosstalk attenuation over recommended ranges of supply
voltage and operating free-air temperature
PARAMETER
VCC supply-voltage rejection ratio,
transmit channel
0 ≤ f < 30 kHz
30 ≤ f < 50 kHz
TEST CONDITIONS
Idle channel,
Supply signal = 200 mV(peak-to-peak),
f measured at PCM OUT
MIN TYP†
–40
–45
MAX
UNIT
dB
VBB supply-voltage rejection ratio,
transmit channel
0 ≤ f < 30 kHz
30 ≤ f < 50 kHz
Idle channel,
Supply signal = 200 mV(peak-to-peak),
f measured at PCM OUT
–35
dB
–55
VCC supply-voltage rejection ratio,
receive channel (single ended)
0 ≤ f < 30 kHz
30 ≤ f < 50 kHz
Idle channel,
Supply signal = 200 mV(peak-to-peak),
f measured at PWRO +
–40
dB
–45
VBB supply-voltage rejection ratio,
receive channel (single ended)
0 ≤ f < 30 kHz
30 ≤ f < 50 kHz
Idle channel,
Supply signal = 200 mV(peak-to-peak),
Narrow-band f measured at PWRO +
–40
dB
–45
ANLG IN+ = 0 dBm0,
f = 1.02 kHz,
Unity gain,
Crosstalk attenuation, transmit to receive (single ended)
PCM IN = lowest decode level,
75
dB
Measured at PWRO +
PCM IN = 0 dBm0, f = 1.02 kHz,
Crosstalk attenuation, receive to transmit (single ended)
Measured at PCM OUT
75
dB
† _{All typical values are at VBB = – 5 V, VCC = 5 V, and TA = 25°C.}
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