TLFD500PN

3.3 V INTEGRATED G.LITE ANALOG FRONT END

SLAS207B – JUNE 1999 – REVISED MAY 2000

29

POST OFFICE BOX 655303

recommended operating conditions (continued)

clock

MIN

NOM

MAX

UNIT

Input clock frequency

35.328

MHz

Input clock duty cycle

50%

electrical characteristics over recommended operating free-air temperature range,

3.3 V, (unless otherwise noted)

TX channel (measured differentially)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Gain error

–1.5

1.5

dB

PAA step gain error

±0.25

dB

DC offset

50

100

mV

Cross-talk

RX to TX channel

–70

dB

Idle channel noise

65

µVrms

Group delay

30

µs

Power supply rejection ratio (PSRR)

200 mVp-p at 75 kHz

70

dB

Analog output voltage

Load = 2000

Ω

3

Vp-p

AC Performance

SNR

Signal-to-noise ratio

70

dB

THD

Total harmonic distortion ratio

70 kHz at –1 dB (see Note 14)

75

dB

TSNR

Signal-to-noise + harmonic distortion ratio

68

dB

30.1875 kHz

–71

MT

Missing-tone test (see Note 15)

81.9375 kHz

–71

dB

129.375 kHz

–71

Channel Frequency Response (Refer to Figure 13)

30 kHz

–1.5

1.5

Filter gain relative to gain at 77.625 kHz

Pass-band (ripple)

–1

1

dB

180 kHz

–70

NOTES: 14. The input signal is the digital equivalent of a sine wave (digital full scale = 0 dB). The normal differential output with this input condition

is 3 Vpp.

15. 27 tones, 25.875 to 138 kHz, 4.3125 kHz/step, 0 dB

reference outputs

MIN

NOM

MAX

UNIT

REFP

2.2

2.5

2.8

V

REFM

0.3

0.5

0.7

V

TXBANDGAP

AVDD_REF = 3.3 V

1.4

1.5

1.6

V

RXBANDGAP

1.4

1.5

1.6

V

VMID_RX

1.5

V

digital outputs

MIN

NOM

MAX

UNIT

VOH

High-level output voltage

IOH = 2 mA

2.4

V

VOL

Low-level output voltage

IOL = –2 mA

0.6

V