CS61584A datasheet(6/54 Pages) CIRRUS

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CS61584A

DS261PP5

ANALOG CHARACTERISTICS (T

A = -40 to 85 °C; power supply pins within ±5% of nominal.)

Notes: 7. For input amplitude of 1.2 Vpk to 4.14 Vpk.

8. For input amplitude of 0.5 Vpk to 1.2 Vpk, and 4.14 Vpk to 5.0 Vpk.

9. For input amplitude of 1.07 Vpk to 4.14 Vpk.

10. For input amplitude of 4.14 Vpk to 5.0 Vpk.

11. Jitter tolerance increases at lower frequencies. Refer to the Receiver section.

12. Not production tested. Parameters guaranteed by design and characterization.

13. Typical performance using the line interface circuitry recommended in the Applications section.

14. Return loss = 20 log10 ABS((z1 + z0) / (z1 - z0)) where z1 = impedance of the transmitter or receiver, and

z0 = cable impedance.

15. Attenuation measured with sinusoidal input jitter equal to 3/4 of measured jitter tolerance. Circuit

attenuates jitter at 20 dB/decade above the corner frequency. Output jitter can increase significantly

when more than 28 UI's are input to the attenuator. The jitter attenuator -3 dB knee in T1 mode is

selectable for 4.0 Hz or 1.25 Hz. Refer to the Jitter Attenuator section.

Parameter

Symbol

Min

Typ

Max

Unit

Receiver

RTIP/RRING Differential Input Impedance

Ω

Sensitivity Below DSX-1 (0 dB = 2.4 V)

-13.6

Loss of Signal Threshold

0.3

Data Decision Threshold

T1, DSX-1

(Note 7)

(Note 8)

T1, FCC Part 68 and E1

(Note

(Note 10)

% of

Peak

Allowable Consecutive Zeros before LOS

160

175

190

bits

Receiver Input Jitter Tolerance (DSX-1, E1)

10 Hz and below

(Note 11)

2kHz

10 kHz - 100 kHz

300

6.0

0.4

Receiver Return Loss

(Notes 12, 13, and 14)

51 kHz - 102 kHz

102 kHz - 2.048 MHz

2.048 MHz - 3.072 MHz

Jitter Attenuator

Jitter Attenuator Corner Frequency

(Notes 12 and 15)

1.25

4.0

1.25

Attenuation at 10 kHz Jitter Frequency

(Notes 12 and 15)

Attenuator Input Jitter Tolerance

(Note 12)

(Before Onset of FIFO Overflow or Underflow Protection)

UIpk-pk

Transmitter

Arbitrary Pulse Amplitude at Transformer Secondary

T1, DSX-1

T1, DS1

E1, 75

Ω

E1, 120

Ω

mV/LS

CS61584A

DS261F1

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