TCM29C13 Datasheet, PDF (8/25 Pages) Texas Instruments – COMBINED SINGLE-CHIP PCM CODEC AND FILTER

TCM29C13, TCM29C14, TCM29C16, TCM29C17,
TCM129C13, TCM129C14, TCM129C16, TCM129C17
COMBINED SINGLE-CHIP PCM CODEC AND FILTER
SCTS011H – APRIL 1986 – REVISED JULY 1996
noise over recommended ranges of supply voltage and operating free-air temperature range
PARAMETER
TEST CONDITIONS
Transmit noise, C-message weighted
ANLG IN+ = ANLG GND, ANLG IN – = GSX
Transmit noise, C-message weighted with 8-bit-
signaling (TCM29C14 and TCM129C14 only)
ANLG IN+ = ANLG GND,
6th frame signaling
ANLG IN – = GSX,
Transmit noise, psophometrically weighted
ANLG IN+ = ANLG GND, ANLG IN – = GSX
Receive noise, C-message-weighted quiet code
PCM IN = 11111111 (µ-law), PCM IN = 10101010
(A-law), measured at PWRO +
Receive noise, C-message-weighted sign bit toggled
Input to PCM IN is zero code with sign bit toggled at
1-kHz rate
Receive noise, psophometrically weighted
PCM = lowest positive decode level
MIN MAX UNIT
15 dBrnC0
18 dBrnC0
– 6 9 dBm0p
11 dBrnC0
12 dBrmC0
– 79 dBm0p
power-supply rejection ratio and crosstalk attenuation over recommended ranges of supply
voltage and operating free-air temperature
PARAMETER
TEST CONDITIONS
MIN TYP† MAX UNIT
VCC 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
– 30
dB
– 45
VBB 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
– 30
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 +
– 20
dB
– 45
VBB 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 +
– 20
dB
– 45
ANLG IN+ = 0 dBm0, f = 1.02 kHz,
Crosstalk attenuation, transmit to receive
(single ended)
Unity gain,
PCM IN = lowest decode level,
71
dB
Measured at PWRO+
Crosstalk attenuation, receive to transmit
(single ended)
PCM IN = 0 dBm0, f = 1.02 kHz,
Measured at PCM OUT
71
dB
† _{All typical values are at VBB = – 5 V, VCC = 5 V, and TA = 25°C.}
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