STAC9708 datasheet(50/56 Pages) ETC

50 / 56 page

SigmaTel, Inc.

Preliminary

STAC9708/11

10/02/98

Spurious Tone Rejection

+100

−

Attenuation, Gain Step Size

1.5

−

Input Impedance

−

Ω

Input Capacitance

−

Vrefout

0.41 x

AVdd

−

Interchannel Gain Mismatch ADC

0.5

Interchannel Gain Mismatch DAC

0.5

Gain Drift

100

ppm/ oC

DAC Offset Voltage

Deviation from Linear Phase

degree

External Load Impedance

Ω

Mute Attenuation (0 dB)

Notes:

With +20 dB Boost on, 1.0Vrms with Boost off

± 1 dB limits

The ratio of the rms output level with 1 kHz full scale input to the rms

output level with all zeros into the digital input. Measured “A weighted”

over a 20 Hz to a 20 kHz bandwidth. (AES17-1991 Idle Channel Noise or

EIAJ CP-307 Signal-to-noise Ratio).

0 dB gain, 20 kHz BW, 48 kHz Sample Frequency

± 0.25dB limits

Stop Band rejection determines filter requirements. Out-of-Band rejection

determines audible noise.

The integrated Out-of-Band noise generated by the DAC process, during

normal PCM audio playback, over a bandwidth 28.8 to 100 kHz, with

respect to a 1 Vrms DAC output.

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