TLFD600 Datasheet, PDF (21/37 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) (continued)
TX channel (TX line driver is not included)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
Signal bandwidth
Low-pass filter
FMR [D4] = 0
FMR [D4] = 1
133 138 143
kHz
121 125 129
High-pass filter
25.875
kHz
MTPR
1. 4.3125kHz spaced tones from 25.875 to 138 kHz
2. 81.9375 kHz tone is missing
70
dB
Group delay distortion
10 µs
PAA gain step error
–0.5
0.5 dB
PSRR
See Note 2
–70
dB
Out-of-band noise
See Note 3
– 150
dBm/Hz
NOTES: 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.
3. Send multitone signal (25.875 to 138 kHz at 4.3125 kHz/step) at full scale output level and measure signal level beyond 276 kHz
at TXOUTP/M.
TX driver (AVDD_DRIVER = 12 V)
PARAMETER
Output voltage swing
Output current
Output short circuit
protection current limit
TSNR
DRIVERINP/M
TEST CONDITIONS
Input signal is 138 kHz @ 3 VP-P differential at
DRIVERINP/M, RL = 50 Ω
Input 3 VP-P differential @ 138 kHz at DRIVERINP/M
Input impedance
MIN TYP MAX UNIT
18.2 VP-P
220
mA
300
85
dB
600
Ω
VCXO DAC
Resolution
DNL
INL
PARAMETER
Differential nonlinearity
Integral nonlinearity
Monotonicity
Offset error
Output compliance voltage
Output load
TEST CONDITIONS
Maximum code input with load = 50 kΩ
MIN
–100
TYP MAX UNIT
12
Bits
±1
LSB
±4
LSB
12 Bits
100 mV
3
V
50
kΩ
power dissipation
PARAMETER
Analog (TX line driver is not included)
Digital
Fully operational without TX line driver
TX Driver
TX Driver
Fully operational with driver
H/W power down
TEST CONDITIONS
All AVDD = 3.3 V
All DVDD = 3.3 V
Quiescent, AVDD_DRIVER = 12 V
– 47 dBm/Hz DMT signal (PAR = 17 dB) on 50-Ω load,
(AVDD_DRIVER = 12 V)
MIN TYP MAX UNIT
620 695 mW
150 165 mW
770 860 mW
510 570 mW
610 690 mW
1380 1530 mW
160 250 mW
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