Table 9. Linearity of ATU-C RX

f1 (0.5Vpd)

f2 (0.5Vpd)

S/IM3 (AGC = 20 dB)

2f2 - f1

2f1 - f2

80kHz

70kHz

56.5dB @ 60kHz

56.5dB @ 90kHz

Table 10. RX Filter to A/D Interface

RX filter to A/D maximal level:

1Vpd = full scale of A/D

Table 11. A/D Convertors (A pipeline architecture is used for A/D convertors).

Numbers of bits:

12bits

Minimum resolution of the A/D convertor

11bits

Linearity error of the A/D convertor

<1LSB (out of 12bits)

Full scale input range:

1 Vpdif

±5%

Sampling rate:

8.832MHz (or 4.416MHz in OSR = 2 mode)

Maximum attenuation at 1.1MHz:

<0.5dB without in-band ripple

Maximum group delay:

<3

µs

Maximum group delay distortion:

<1

µs

Power Supply Rejection

The noise on the power supplies for the RX path must be lower than the following:

<50mVrms in band white noise for any AVDD.

In this case, PSR (power supply rejection) of STLC60134S RX path is lower than -43dB.

TX PATH

Transmitter Spectral Response

The two figures below show the ANSI spectral response mask for ATU-C and ATU-R transmitters

dBm/Hz

-40

+/-3dB

24dB

50dB

30

1104 2208

11040

KHz

D98TL361

-64

-90

Figure 8. ATU-C TX spectral response mask

dBm/Hz

-40

+/-3dB

24dB

48dB

30

138

181

224

KHz

D98TL362

-64

-88

Figure 9. ATU-R TX spectral response mask

STLC60134S

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