
12
INDUSTRIAL TEMPERATURE RANGE
IDT821034 QUAD PCM CODEC WITH PROGRAMMABLE GAIN
Parameter
Description
Min
Typ
Max
Units
Test Conditions
DXA
Transmit Delay, Absolute *
340
s
DXR
Transmit Delay, Relative to 1800 Hz
f = 500 Hz – 600 Hz
f = 600 Hz –1000 Hz
f = 1000 Hz – 2600 Hz
f = 2600 Hz – 2800 Hz
280
150
80
280
s
DRA
Receive Delay, Absolute *
260
s
DRR
Receive Delay, Relative to 1800 Hz
f = 500 Hz – 600 Hz
f = 600 Hz –1000 Hz
f = 1000 Hz – 2600 Hz
f = 2600 Hz – 2800 Hz
50
80
120
150
s
Group Delay
Note*: Minimum value in transmit and receive path.
Parameter
Description
Min
Typ*
Max
Units
Test Conditions
STDX
Transmit Signal to Total Distortion Ratio
Input level = 0 dBm0
Input level = -30 dBm0
Input level = -40 dBm0
Input level = -45 dBm0
36
30
24
dB
ITU-T O.132
Sine Wave Method (C-message weighted
for -law; Psophometrically weighted for A-
law)
STDR
Receive Signal to Total Distortion Ratio
Input level = 0 dBm0
Input level = -30 dBm0
Input level = -40 dBm0
Input level = -45 dBm0
36
30
24
dB
ITU-T O.132
Sine Wave Method (C-message weighted
for -law; Psophometrically weighted for A-
law)
SFDX
Single Frequency Distortion, Transmit
-42
dBm0
200 Hz - 3400 Hz, 0 dBm0 input, output
any other single frequency ≤ 3400 Hz
SFDR
Single Frequency Distortion, Receive
-42
dBm0
200 Hz - 3400 Hz, 0 dBm0 input, output
any other single frequency ≤ 3400 Hz
IMD
Intermodulation Distortion
-50
dBm0
Four Tone Method
Distortion
Parameter
Description
Min
Typ
Max
Units
Test Conditions
NXC
Transmit Noise, C Message Weighted for
-law
18
dBrnC0
NXP
Transmit Noise, P Message Weighted for A-law
-68
dBm0p
NRC
Receive Noise, C Message Weighted for -law
12
dBrnC0
NRP
Receive Noise, P Message Weighted for A-law
-78
dBm0p
NRS
Noise, Single Frequency
f = 0 kHz – 100 kHz
-53
dBm0
VFXI = 0 Vrms, tested at VFRO
PSRX
Power Supply Rejection Transmit
f = 300 Hz – 3.4 kHz
f = 3.4 kHz – 20 kHz
40
25
dB
VDD = 5.0 VDC + 100 mVrms
PSRR
Power Supply Rejection Receive
f = 300 Hz – 3.4 kHz
f = 3.4 kHz – 20 kHz
40
25
dB
PCM code is positive one LSB, VDD = 5.0
VDC + 100 mVrms
SOS
Spurious Out-of-Band Signals at VFRO Relative to
Input PCM code applied:
4600 Hz – 20 kHz
20 kHz – 50 kHz
-40
-30
dB
0 dBm0, 300 Hz – 3400 Hz input
Noise