WM8753(2005) 데이터 시트보기 (PDF) - Wolfson Microelectronics plc

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WM8753
(Rev.:2005)

Hi-Fi and Telephony Dual CODEC

Wolfson Microelectronics plc 

WM8753L

Pre-Production

ELECTRICAL CHARACTERISTICS

Test Conditions

DCVDD = 1.5V, AVDD = HPVDD = DBVDD = SPKRVDD = PLLVDD = 3.3V, TA = +25oC, 1kHz signal, fs = 48kHz, 24-bit audio

data unless otherwise stated.

PARAMETER

SYMBOL TEST CONDITIONS

MIN

TYP

MAX

UNIT

Analogue Inputs (LINE1, LINE2, RXP, RXN)

Full-scale Input Signal Level

(0dB) – note this changes with

AVDD

VINFS

1.0

Vrms

Input Capacitance

CLINE1/2,

RXP/N

10

pF

Microphone Preamp Inputs (MIC1, MIC1N, MIC2, MIC2N)

Full-scale Input Signal Level

(0dB) – note this changes with

AVDD

VINFS

177

mVrms

-12

dBV

Mic preamp gain range

12

30

dB

Mic preamp equivalent input At 30dB gain

noise

TBD

uV

Input resistance

RMIC1N, RMIC2N

Gain set to 30dB

5

kΩ

Input resistance

RMIC1N, RMIC2N

Gain set to 24dB

10

kΩ

Input resistance

RMIC1N, RMIC2N

Gain set to 18dB

18

kΩ

Input resistance

RMIC1N, RMIC2N

Gain set to 12dB

33

kΩ

Input resistance

RMIC1, RMIC2

163

kΩ

Recommended decoupling cap CDECOUP

0.33

uF

Input Capacitance

CMICIN

10

pF

Programmable Gain Amplifier (PGA)

Programmable Gain

-17.25

30

dB

Programmable Gain Step Size

Guaranteed Monotonic

0.75

dB

Mute Attenuation

TBD

dB

Automatic Level Control (ALC)

Target Record Level

-28.5

-6

dB

Gain Hold Time (Note 1)

tHOLD

Gain Ramp-Up (Decay) Time tDCY

(Note2)

0, 2.67, 5.33, 10.67, … , 43691

ms

MCLK = 12.288MHz

(time doubles with each step)

(Note 3)

24, 48, 96, … , 2458

ms

(time doubles with each step)

Gain Ramp-Down (Attack) Time tATK

(Note 2)

6, 12, 24, … , 6140

ms

(time doubles with each step)

LINE1/2 to Analogue to Digital Converter (ADC)

Signal to Noise Ratio (Note 4, 5)

A-weighted, 0dB gain

95

dB

Total Harmonic Distortion

(Note 6)

full-scale, 0dB gain

-82

dB

Channel Separation (Note 7)

1kHz input signal

90

dB

LINE1/2 to Voice Analogue to Digital Converter (ADC), fs = 8kHz

Signal to Noise Ratio (Note 4, 5)

A-weighted, 0dB gain

82

dB

Total Harmonic Distortion

(Note 6)

full-scale, 0dB gain

-74

dB

Channel Separation (Note 7)

1kHz input signal

90

dB

Digital to Analogue Converter (DAC) to Lineout (LOUT1/2, ROUT1/2, MONO1, MONO2,OUT3 with 10kΩ / 50pF load)

Signal to Noise Ratio

SNR

A-weighted

TBD

98

dB

(A-weighted)

Total Harmonic Distortion

THD

RL = 10 kΩ

-84

dB

(Note 6)

full-scale signal

w

PP Rev 3.4 November 2005

7

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