TLFD600

ADSL CODEC WITH INTEGRATED LINE DRIVER AND RECEIVER

SLAS280B – MAY 2000 – REVISED NOVEMBER 2000

21

POST OFFICE BOX 655303

TX channel (TX line driver is not included)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Low pass filter

FMR [D4] = 0

133

138

143

kHz

Signal bandwidth

Low-pass filter

FMR [D4] = 1

121

125

129

kHz

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

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Output voltage swing

Input signal is 138 kHz @ 3 VP-P differential at

DRIVERINP/M, RL = 50 Ω

18.2

VP-P

Output current

220

Output short circuit

protection current limit

300

mA

TSNR

Input 3 VP-P differential @ 138 kHz at DRIVERINP/M

85

dB

DRIVERINP/M

Input impedance

600

Ω

VCXO DAC

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Resolution

12

Bits

DNL

Differential nonlinearity

±1

LSB

INL

Integral nonlinearity

±4

LSB

Monotonicity

12

Bits

Offset error

–100

100

mV

Output compliance voltage

Maximum code input with load = 50 k

Ω

3

V

Output load

50

k

Ω

power dissipation

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Analog (TX line driver is not included)

All AVDD = 3.3 V

620

695

mW

Digital

All DVDD = 3.3 V

150

165

mW

Fully operational without TX line driver

770

860

mW

TX Driver

Quiescent, AVDD_DRIVER = 12 V

510

570

mW

TX Driver

– 47 dBm/Hz DMT signal (PAR = 17 dB) on 50

-

Ω load,

(AVDD_DRIVER = 12 V)

610

690

mW

Fully operational with driver

1380

1530

mW

H/W power down

160

250

mW