UDA1344TS Просмотр технического описания (PDF) - Philips Electronics

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UDA1344TS

Low-voltage low-power stereo audio CODEC with DSP features

Philips Electronics 

Philips Semiconductors

Low-voltage low-power stereo audio

CODEC with DSP features

Product specification

UDA1344TS

AC CHARACTERISTICS

VDDD = VDDA = VDDO = 3.0 V; fi = 1 kHz; Tamb = 25 °C; RL = 5 kΩ; all voltages referenced to ground; unless otherwise

specified.

SYMBOL

PARAMETER

CONDITIONS

TYP. MAX. UNIT

Analog-to-digital converter

Vi(rms)

input voltage (RMS value)

notes 1 and 2

1.0

∆Vi

unbalance between channels

0.1

(THD + N)/S total harmonic distortion-plus-noise to signal ratio at 0 dB

−85

at −60 dB; A-weighted −35

S/N

αcs

PSRR

signal-to-noise ratio

channel separation

power supply rejection ratio

Vi = 0 V; A-weighted

95

100

fripple = 1 kHz;

30

Vripple = 300 mV (p-p)

Digital-to-analog converter

Vo(rms)

output voltage (RMS value)

notes 3 and 4

900

∆Vo

unbalance between channels

0.1

(THD + N)/S total harmonic distortion-plus-noise to signal ratio at 0 dB

−90

at −60 dB; A-weighted −37

S/N

signal-to-noise ratio

code = 0; A-weighted 100

αcs

PSRR

channel separation

power supply rejection ratio

100

fripple = 1 kHz;

50

Vripple = 300 mV (p-p)

−

V

−

dB

−80 dB

−30 dB

−

dB

−

dB

−

dB

−

mV

−

dB

−85 dB

−

dB

−

dB

−

dB

−

dB

Notes

1. The input voltage can be up to 2 V (RMS) when the current through the ADC input pin is limited to approximately

1 mA by using a series resistor.

2. The input voltage to the ADC is inversely proportional with the supply voltage.

3. The output voltage of the UDA1344TS differs from the output voltage of the UDA1340M.

4. The output of the DAC scales proportionally with the supply voltage.

2001 Jun 29

18

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