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)
Transmit noise, psophometrically weighted‡
Receive noise, C-message-weighted quiet code
TEST CONDITIONS
ANLG IN+ = ANLG GND,
ANLG IN+ = ANLG GND,
6th frame signaling
ANLG IN+ = ANLG GND,
PCM IN = 11111111 (µ-law),
PCM IN = 10101010 (A-law),
Measured at PWRO +
Input to PCM IN is zero code with sign bit
toggled at 1-kHz rate
ANLG IN – = GSX
ANLG IN – = GSX,
ANLG IN – = GSX
– 82
2
MIN
TYP†
1
MAX
7
13
– 80
5
UNIT
dBrnC0
dBrnC0
dBm0p
dBrnC0
Receive noise, C-message-weighted sign bit toggled
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,
y
g
j
,
transmit channel
VBB supply-voltage rejection ratio,
y
g
j
,
transmit channel
VCC supply-voltage rejection ratio,
y
g
j
,
receive channel (single ended)
VBB supply-voltage rejection ratio,
y
g
j
,
receive channel (single ended)
0
≤
f < 30 kHz
30
≤
f < 50 kHz
0
≤
f < 30 kHz
30
≤
f < 50 kHz
0
≤
f < 30 kHz
30
≤
f < 50 kHz
0
≤
f < 30 kHz
30
≤
f < 50 kHz
TEST CONDITIONS
Idle channel,
Supply signal = 200 mV(peak to peak)
mV(peak-to-peak),
f measured at PCM OUT
Idle channel,
Supply signal = 200 mV(peak-to-peak),
mV(peak to peak)
f measured at PCM OUT
Idle channel,
Supply signal = 200 mV(peak-to-peak),
mV(peak to peak)
f measured at PWRO +
Idle channel,
Supply signal = 200 mV(peak-to-peak),
mV(peak to peak)
Narrow-band f measured at PWRO +
ANLG IN+ = 0 dBm0,
f = 1.02 kHz,
Unity gain,
PCM IN = lowest decode level,
Measured at PWRO +
PCM IN = 0 dBm0, f = 1.02 kHz,
Measured at PCM OUT
MIN
TYP†
–40
dB
–45
–35
dB
–55
–40
dB
–45
–40
dB
–45
MAX
UNIT
Crosstalk attenuation, transmit to receive (single ended)
75
dB
Crosstalk attenuation, receive to transmit (single ended)
75
dB
† All typical values are at VBB = – 5 V, VCC = 5 V, and TA = 25°C.
8
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
