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IDT821054APF8

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36P37-P39P40-P42
34
IDT821054A QUAD PROGRAMMABLE PCM CODEC WITH MPI INTERFACE INDUSTRIAL TEMPERATURE
7 TRANSMISSION CHARACTERISTICS
0 dBm0 is defined as 0.775 Vrms for A-law and 0.769 Vrms for µ-law, both for 600 Ω load. Unless otherwise noted, the analog input is a 0 dBm0,
1020 Hz sine wave; the input amplifier is set for unity gain. The digital input is a PCM bit stream equivalent to that obtained by passing a 0 dBm0, 1020
Hz sine wave through an ideal encoder. The output level is sin(x)/x-corrected. Typical values are for V
DD
= +5 V and T
A
= 25°C.
7.1 ABSOLUTE GAIN
7.2 GAIN TRACKING
7.3 FREQUENCY RESPONSE
Parameter Description Min. Typ. Max. Units Test Conditions
G
XA
Transmit gain, absolute
0°C to 85°C
−40°C
−0.25
−0.30
0.25
0.30
dB
dB
Signal output of 0 dBm0, 1020 Hz, µ-law or A-law
G
RA
Receive gain, absolute
0
°C to 85°C
−40°C
−0.25
−0.30
0.25
0.30
dB
dB
Measured relative to 0 dBm0, µ-law or A-law, PCM
input of 0 dBm0, 1020 Hz. R
L
= 10 kΩ.
Parameter Description Min. Typ. Max. Units Test Conditions
G
TX
Transmit gain tracking
+3 dBm0 to −37 dBm0 (exclude −37 dBm0)
−37 dBm0 to −50 dBm0 (exclude −50 dBm0)
−50 dBm0 to −55 dBm0
−0.25
−0.50
−1.40
0.25
0.50
1.40
dB
dB
dB
Tested by sinusoidal method, A-law or µ-law.
G
TR
Receive gain tracking
+3 dBm0 to −40 dBm0 (exclude −40 dBm0)
−40 dBm0 to −50 dBm0 (exclude −50 dBm0)
−50 dBm0 to −55 dBm0
−0.10
−0.25
−0.50
0.10
0.50
0.50
dB
dB
dB
Tested by sinusoidal method, A-law or µ-law.
Parameter Description Min. Typ. Max. Units Test Conditions
G
XR
Transmit gain, relative to G
XA
f = 50 Hz
f = 60 Hz
f = 300 Hz
f = 300 to 3000 Hz (exclude 3000 Hz)
f = 3000 Hz to 3400 Hz
f = 3600 Hz
f ≥ 4600 Hz
−0.10
−0.15
−0.60
−30
−30
0.20
0.15
0.15
−0.10
−35
dB
dB
dB
dB
dB
dB
dB
The high-pass filter is enabled.
G
RR
Receive gain, relative to G
RA
f < 300 Hz
f = 300 to 3000 Hz (exclude 3000 Hz)
f = 3000 Hz to 3400 Hz
f = 3600 Hz
f ≥ 4600 Hz
−0.15
−0.60
0
0.15
0.15
−0.20
−35
dB
dB
dB
dB
dB
35
IDT821054A QUAD PROGRAMMABLE PCM CODEC WITH MPI INTERFACE INDUSTRIAL TEMPERATURE
7.4 GROUP DELAY
7.5 DISTORTION
Parameter Description Min. Typ. Max. Units Test Conditions
D
XR
Transmit delay, relative to 1800 Hz
f = 500 to 600 Hz
f = 600 to 1000 Hz
f = 1000 to 2600 Hz
f = 2600 to 2800 Hz
280
150
80
280
µs
µs
µs
µs
D
RR
Receive delay, relative to 1800 Hz
f = 500 to 600 Hz
f = 600 to 1000 Hz
f = 1000 to 2600 Hz
f = 2600 to 2800 Hz
50
80
120
150
µs
µs
µs
µs
Parameter Description Min. Typ. Max. Units Test Conditions
STD
X
Transmit signal to total distortion ratio
A-law:
input level = 0 dBm0
input level = −30 dBm0
input level = −40 dBm0
input level = −45 dBm0
µ-law:
input level = 0 dBm0
input level = −30 dBm0
input level = −40 dBm0
input level = −45 dBm0
36
36
30
24
36
36
31
27
dB
dB
dB
dB
dB
dB
dB
dB
ITU-T O.132
Sine wave method, psophometrically weighted
for A-law and C-message weighted for µ-law.
STD
R
Receive signal to total distortion ratio
A-law:
input level = 0 dBm0
input level = −30 dBm0
input level = −40 dBm0
input level = −45 dBm0
µ-law:
input level = 0 dBm0
input level = −30 dBm0
input level = −40 dBm0
input level = −45 dBm0
36
36
30
24
36
36
31
27
dB
dB
dB
dB
dB
dB
dB
dB
ITU-T O.132
Sine wave method, psophometrically weighted
for A-law and C-message weighted for µ-law.
SFD
X
Single frequency distortion, transmit −42 dBm0
200 to 3400 Hz, 0 dBm0 input, output any other
single frequency ≤ 3400 Hz
SFD
R
Single frequency distortion, receive −42 dBm0
200 to 3400 Hz, 0 dBm0 input, output any other
single frequency ≤ 3400 Hz
IMD Intermodulation distortion −42 dBm0
Transmit or receive, two frequencies in the range
of 300 to 3400 Hz at −6 dBm0
36
IDT821054A QUAD PROGRAMMABLE PCM CODEC WITH MPI INTERFACE INDUSTRIAL TEMPERATURE
7.6 NOISE
7.7 INTERCHANNEL CROSSTALK
7.8 INTRACHANNEL CROSSTALK
Note: Crosstalk into transmit channels (VIN) can be significantly affected by parasitic capacitive coupling from VOUT outputs. PCB layouts should be arranged to minimize the parasitics.
Parameter Description Min. Typ. Max. Units Test Conditions
N
XC
Transmit noise, C-message weighted for µ-law 15 dBrnC0
N
XP
Transmit noise, psophometrically weighted for A-law −70 dBm0p
N
RC
Receive noise, C-message weighted for µ-law 10 dBrnC0
N
RP
Receive noise, psophometrically weighted for A-law −80 dBm0p
N
RS
Noise, single frequency
f = 0 kHz to 100 kHz
−53 dBm0 VIN = 0 Vrms, tested at VOUT
PSR
X
Power supply rejection, transmit
f = 300 Hz to 3.4 kHz
f = 3.4 kHz to 20 kHz
40
25
dB
dB
VDD = 5.0 VDC+100 mVrms
PSR
R
Power supply rejection, receive
f = 300 Hz to 3.4 kHz
f = 3.4 kHz to 20 kHz
40
25
dB
dB
VDD = 5.0 VDC+100 mVrms, PCM code is
positive one LSB
SOS
Spurious out-of-band signals at VOUT, relative to
input PCM code applied:
f = 4.6 kHz to 20 kHz
f = 20 kHz to 50 kHz
−40
−30
dB
dB
0 dBm0, 300 Hz to 3400 Hz input
Parameter Description Min. Typ. Max. Units Test Conditions
XT
X-R
Transmit to receive crosstalk −85 −78 dB
300 Hz to 3400 Hz, 0 dBm0 signal into VIN of the interfering
channel. Idle PCM code into the channel under test.
XT
R-X
Receive to transmit crosstalk −85 −80 dB
300 Hz to 3400 Hz, 0 dBm0 PCM code into the interfering channel.
VIN = 0 Vrms for the channel under test.
XT
X-X
Transmit to transmit crosstalk −85 −78 dB
300 Hz to 3400 Hz, 0 dBm0 signal into VIN of the interfering
channel. VIN = 0 Vrms for the channel under test.
XT
R-R
Receive to receive crosstalk −85 −80 dB
300 Hz to 3400 Hz, 0 dBm0 PCM code into the interfering channel.
Idle PCM code into the channel under test.
Parameter Description Min. Typ. Max. Units Test Conditions
XT
X-R
Transmit to receive crosstalk −80 −70 dB
300 Hz to 3400 Hz, 0 dBm0 signal into VIN. Idle PCM code into
DR.
XT
R-X
Receive to transmit crosstalk −80 −70 dB 300 Hz to 3400 Hz, 0 dBm0 PCM code into DR. VIN = 0 Vrms.
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IDT821054APF8

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IC PCM CODEC QUAD MPI 64-TQFP
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