CS61575 datasheet(4/44 Pages) CIRRUS

4 / 44 page

ANALOG SPECIFICATIONS (TA = -40

°C to 85°C; TV+, RV+ = 5.0V ±5%; GND = 0V)

Parameter

Min

Typ

Max

Units

Receiver

RTIP/RRING Input Impedance

50k

Ω

Sensitivity Below DSX (0dB = 2.4V)

-13.6

500

Data Decision Threshold

T1, DSX-1

(Note 20)

T1, DSX-1

(Note 21)

T1, FCC Part 68 and E1

(Note 22)

% of peak

Allowable Consecutive Zeros before LOS

160

175

190

bits

Receiver Input Jitter Tolerance

(Note 23)

10kHz - 100kHz

2kHz

10Hz and below

0.4

6.0

300

Loss of Signal Threshold

(Note 24)

0.25

0.30

0.50

Notes: 20. For input amplitude of 1.2 Vpk to 4.14 Vpk.

21. For input amplitude of 0.5 Vpk to 1.2 Vpk and from 4.14 Vpk to RV+.

22. For input amplitude of 1.05 Vpk to 3.3 Vpk.

23. Jitter tolerance increases at lower frequencies. See Figure 11.

24. The analog input squelch circuit shall operate when the input signal amplitude above ground on the

RTIP and RRING pins falls within the range of 0.25V to 0.50V. Operation of the squelch results in

the recovery of zeros. During receive LOS, the RPOS, RNEG or RDATA outputs are forced low.

CS61574A CS61575

DS154F2

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