UPD9903 Datasheet, PDF (20/28 Pages) NEC – UPD9903 ANALOG SUBSCRIBER LINE LSI DIGITAL CODEC

µPD9903
Parameter
Absolute delay
characteristics
Absolute delay distortion
frequency characteristics
Intermodulation (2 Tone)
Single frequency noise
Deviation in gain setting
for transmission channel
Deviation in gain setting
for reception chanel
Idle circuit noise
Line to ground balance
attenuation
AC induction noise
resistance
Symbol
DA
Conditions
A-A Input signal 0 dBm0
MIN.
TYP.
MAX.
540
Units
µs
DO
IMD
NSF
∆DGSX
∆DGSR
IDN24
IDN42
LCL
LFI
A-A
500 Hz
600 HZ
1000 to 2600 Hz
2800 Hz
A-D Input signal
f1, f2: 300 to 3400 Hz
–4 to –21 dBm0
Measurement signal: 2 × f1 – f2
level (2 × f1 – f2) vs level (f1, f2)
D-A Input signal
f1, f2: 300 to 3400 Hz
–4 to –21 dBm0
Measurement signal: 2 × f1 – f2
level (2 × f1 – f2) vs level (f1, f2)
D-A
PAD level set at 0 dB
Measurement signal up to f = 256 kHz
A-D Difference from reference set value
Setting value: +7.5 to +3.0 dB
+3.0 to –3.5 dB
D-A Difference from reference set value
Setting value: 0.0 to –5.0 dB
–5.0 to –8.5 dB
2W-4W A-law Psophometric weighted
µ-law C message weighted
4W-2W A-law Psophometric weighted
µ-law C message weighted
RF = 50 Ω
f = 300 to 600 Hz
Relative accuracy = 0.5 % f = 600 to 3400 Hz
IL = 0 mA
VIN = 6 Vrms
IL = 20 mA
VIN = 15 Vrms
44.0
44.0
–0.2
–0.1
–0.1
–0.2
42
48
1400
700
200
1400
dB
–54 dBm0
dB
+0.2
+0.1
+0.1
+0.2
–67
23
–76
14
dBm0p
dBrnc0
dBm0p
dBrnc0
dB
43
dBrnc
20
20