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T-8502-EL2-DT 데이터 시트보기 (PDF) - Agere -> LSI Corporation

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T-8502-EL2-DT Dual PCM codec with filters. Tape and reel. Agere
Agere -> LSI Corporation Agere
T-8502-EL2-DT Datasheet PDF : 16 Pages
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T8502 and T8503 Dual PCM Codecs with Filters
Data Sheet
July 1998
Transmission Characteristics (continued)
ac Transmission Characteristics
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.
Table 5. Absolute Gain
Parameter
Encoder Milliwatt
Response (transmit
gain tolerance)
Decoder Milliwatt
Response (receive
gain tolerance)
Relative Decoder Gain
Variation Referenced
to DmW
Symbol
Test Conditions
Min Typ Max Unit
EmW Signal input of 0.775 Vrms, 0 °C to 85 °C –0.20 — 0.20 dBm0
µ-law or A-law
–40 °C to +85 °C –0.25 — 0.25 dBm0
DmW
RGR
Measured relative to
0 °C to 85 °C –0.20 — 0.20 dBm0
0.775 Vrms µ-law or A-law, –40 °C to +85 °C –0.25 — 0.25 dBm0
PCM input of 0 dBm0
1020 Hz, RL = 10 k
Decoder gain at –3.5 dB –40 °C to +85 °C –0.15 — 0.15 dB
(GS = 0)
Table 6. Gain Tracking
Parameter
Transmit Gain Tracking Error
Sinusoidal Input µ-Law/A-Law
Receive Gain Tracking Error
Sinusoidal Input µ-Law/A-Law
Symbol
GTX
GTR
Test Conditions
+3 dBm0 to –37 dBm0
–37 dBm0 to –50 dBm0
+3 dBm0 to –37 dBm0
–37 dBm0 to –50 dBm0
Min Typ Max Unit
–0.25 — 0.25 dB
–0.50 — 0.50 dB
–0.25 — 0.25 dB
–0.50 — 0.50 dB
Table 7. Distortion
Parameter
Transmit Signal to Distortion
Receive Signal to Distortion
Single Frequency Distortion,
Transmit
Single Frequency Distortion,
Receive
Intermodulation Distortion
Symbol
Test Conditions
Min Typ Max Unit
SDX
µ-law 3 dBm0 VFXI –30 dBm0
36 — — dB
A-law 3 dBm0 VFXI –30 dBm0
35 — — dB
µ-law –30 dBm0 VFXI –40 dBm0 30 — — dB
A-law –30 dBm0 VFXI –40 dBm0 29 — — dB
µ-law –40 dBm0 VFXI –45 dBm0 25 — — dB
A-law –40 dBm0 VFXI –45 dBm0 25 — — dB
SDR
µ-law 3 dBm0 VFRO –30 dBm0 36 — — dB
A-law 3 dBm0 VFRO –30 dBm0 35 — — dB
µ-law –30 dBm0 VFRO –40 dBm0 30 — — dB
A-law –30 dBm0 VFRO –40 dBm0 29 — — dB
µ-law –40 dBm0 VFRO –45 dBm0 25 — — dB
A-law –40 dBm0 VFRO –45 dBm0 25 — — dB
SFDX
200 Hz—3400 Hz, 0 dBm0 input,
output any other single
frequency 3400 Hz
— — –38 dBm0
SFDR
200 Hz—3400 Hz, 0 dBm0 input,
output any other single
frequency 3400 Hz
— — –40 dBm0
IMD Transmit or receive, two frequencies — — –42 dBm0
in the range (300 Hz—3400 Hz)
at –6 dBm0
6
Lucent Technologies Inc.
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