WM8962B datasheet(19/295 Pages) WOLFSON

19 / 295 page

WM8962

Rev 4.3

Test Conditions

MICVDD = DCVDD = DBVDD = CPVDD = AVDD = PLLVDD = 1.8V, SPKVDD1 = SPKVDD2 = 5V.

TA = +25

oC, 1kHz signal, fs = 48kHz, PGA gain = 0dB, 24-bit audio data unless otherwise stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Crystal Oscillator

External crystal frequency

MHz

Oscillator load capacitance

XTI and XTO Pins

10.5

Start-up time

measured from time when:

PLL

VDD ≥ 1.7V,

AVDD ≥ 1.7V and

DVDD ≥ 1.62V,

until crystal output is stable

and in specification.

1.5

Phase Locked Loops (PLLs)

Output frequency

FOUT

22.5

MHz

Output duty cycle

Start-up time (including Crystal

Oscillator start-up time)

measured from time when:

PLLVDD ≥ 1.7V,

AVDD ≥ 1.7V and

DVDD ≥ 1.62V,

until PLL outputs are stable

and in specification.

1.5

Frequency synthesis error

ppm

Absolute clock period jitter (peak)

Input Clock = 24MHz,

5pF load

500

Short term jitter

(peak, cycle to cycle)

N=1, 1000 samples,

Input Clock = 24MHz,

5pF load. (see Note 4)

150

Long term jitter (peak)

N=1000, 1000 samples,

Input Clock = 24MHz,

5pF load. (see Note 4)

500

MCLK / XTI input frequency range

MHz

Frequency Locked Loop (FLL)

Input frequency

FREF

FLL_REFCLK_DIV = 00

0.032

13.5

MHz

FLL_REFCLK_DIV = 01

0.064

FLL_REFCLK_DIV = 10

0.128

36.864

Output frequency

FOUT

1.875

MHz

Start-Up time

VMID enabled; measured

from FLL_ENA=1 to clock

signal present on CLKOUTn.

220

µs

Frequency synthesis error

ppm

Start-Up time (free-running mode)

VMID enabled; measured

from FLL_ENA=1 to clock

signal present on CLKOUTn.

0.75

µs

Frequency accuracy (free-running

mode)

Reference clock

supplied initially

+/-10

No reference clock

provided

+/-30

Digital Input / Output

Input HIGH Level

VIH

0.7

DBVDD

Input LOW Level

VIL

0.3

DBVDD

Output HIGH Level

VOH

IOH=1mA

0.9

DBVDD

Output LOW Level

VOL

IOL=-1mA

0.1

DBVDD

Input capacitance

Input leakage

-0.9

0.9

µA

CLKOUTn output impedance

160

Ω

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