TLFD600 Datasheet, PDF (20/37 Pages) Texas Instruments – ADSL CODEC WITH INTEGRATED LINE DRIVER AND RECEIVER

TLFD600
ADSL CODEC WITH INTEGRATED LINE DRIVER AND RECEIVER
SLAS280B – MAY 2000 – REVISED NOVEMBER 2000
electrical characteristics, T_A = 25°C, analog power supplies = 3.3 V, digital power supplies = 3.3 V,
AVDD_DRIVER = 12 V, f_CLKIN = 35.328 MHz (unless otherwise noted)
RX channel
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
Signal bandwidth
High-pass
filter
FMR [D2] = 1
FMR [D2] = 0
G.lite mode
Low-pass filter
Full rate mode
162 168 174
174 180 186
kHz
552
1104
Missing tone power ratio (MTPR)
G.lite mode
1.
2.
1.
Full rate mode
2.
4.3125 kHz spaced tones from 138 – 552 kHz
422.625 kHz tone is missing
4.3125 kHz spaced tones from 138 –
1104 kHz
422.625 kHz tone is missing
60
dB
60
Group delay distortion
CPGA
G.lite or full rate mode
10 µs
–0.5
0.5
Gain step error
PGA2
G.lite or full rate mode
–0.5
0.5 dB
PGA3
–0.5
0.5
PSRR
G.lite mode See Note 2
Full rate mode See Note 2
–70
dB
–70
Input reference noise floor
G.lite mode
CPGA = 21 dB, PGA2 = 30 dB, PGA3 = 9 dB,
Equalizer = 0 dB
Full rate mode
–150
–150
dBm/Hz
CMRR
G.lite and Full Rate Mode
60
dB
NOTE 2: Inject single tone signal (267.375 kHz) at 200 mVp-p to analog power supplies and measure 267.375 kHz tones at RX output.
20
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