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WM8983

w

PP Rev 1.1 August 2005

7

Test Conditions

otherwise stated.

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Gain Hold Time (Note 2,4)

MCLK = 12.288MHz (Note 2)

0, 2.67, 5.33, 10.67, … , 43691

(time doubles with each step)

ms

ALCMODE=0 (ALC),

MCLK=12.288MHz (Note 2)

3.3, 6.6, 13.1, … , 3360

(time doubles with each step)

Gain Ramp-Up (Decay) Time

(Note 3,4)

ALCMODE=1 (limiter),

MCLK=12.288MHz (Note 2)

0.73, 1.45, 2.91, … , 744

(time doubles with each step)

ms

ALCMODE=0 (ALC),

MCLK=12.288MHz (Note 2)

0.83, 1.66, 3.33, … , 852

(time doubles with each step)

Gain Ramp-Down (Attack) Time

(Note 3,4)

ALCMODE=1 (limiter),

MCLK=12.288MHz (Note 2)

0.18, 0.36, 0.73, … , 186

(time doubles with each step)

ms

Mute Attenuation

80dB

dB

Analogue to Digital Converter (ADC)

Signal to Noise Ratio (Note 5,6)

A-weighted, 0dB gain

95

dB

Total Harmonic Distortion

(Note 7)

full-scale, 0dB gain

-84

dB

Channel Separation (Note 8)

1kHz input signal

110

dB

Digital to Analogue Converter (DAC) to L/R Mix to Line-Out (LOUT1, ROUT1 with 10k

Ω

Ω

Ω

Ω / 50pF load)

Full-scale output

PGA gains set to 0dB

AVDD1/3.3

Vrms

Signal to Noise Ratio (Note 5,6)

SNR

A-weighted

95

98

dB

Signal to Noise Ratio (Note 5,6)

SNR

22Hz to 20kHz

95.5

dB

Total Harmonic Distortion

(Note 7)

THD

Ω

full-scale signal

-84

dB

Channel Separation (Note 8)

1kHz signal

80

110

dB

Output Mixers (LMX1, RMX1)

PGA gain range into mixer

-15

0

+6

dB

PGA gain step into mixer

3

dB

Analogue Outputs (LOUT1, ROUT1, LOUT2, ROUT2)

Programmable Gain range

-57

0

+6

dB

Programmable Gain step size

Monotonic

1

dB

Mute attenuation

1kHz, full scale signal

85

dB

Headphone Output (AUX to L/RMIX to LOUT1, ROUT1. LOUT2, ROUT2 with 32

Ω

Ω

Ω

Ω load)

0dB full scale output voltage

With > 32R load

AVDD1/3.3

Vrms

Signal to Noise Ratio

SNR

A-weighted

102

dB

Ω, Po=20mW

AVDD1=3.3V

0.003

-92

%

dB

Total Harmonic Distortion

THD

Ω, Po=20mW

AVDD1=3.3V

0.008

- 82

%

dB

Headphone Output (DAC to L/RMIX to LOUT1, ROUT1 with 16

Ω

Ω

Ω

Ω load)

Signal to Noise Ratio

SNR

A-weighted

90

dB

Signal to Noise Ratio

SNR

22Hz to 20kHz

TBD

dB