UDA1344TS/N2 Просмотр технического описания (PDF) - Philips Electronics

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UDA1344TS/N2

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

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Digital inputs

VIH

HIGH-level input voltage

VIL

LOW-level input voltage

ILI

input leakage current

Ci

input capacitance

Digital outputs

VOH

HIGH-level output voltage

VOL

LOW-level output voltage

Three-level inputs: pins MP2 and MP4

VIH

HIGH-level input voltage

VIM

MIDDLE-level input voltage

VIL

LOW-level input voltage

Analog-to-digital converter

IOH = −2 mA

IOL = 2 mA

0.8VDDD −

−0.5

−

−

−

−

−

0.85VDDD −

−

−

0.9VDDD −

0.4VDDD −

−0.5

−

VDDD + 0.5 V

0.2VDDD

V

10

µA

10

pF

−

V

0.4

V

VDDD + 0.5 V

0.6VDDD

V

0.1VDDD

V

Vref(A)

Ro(refA)

Ri

Ci

reference voltage

output resistance on pin Vref(A)

input resistance

input capacitance

refererred to

VSSA(ADC)

fi = 1 kHz

0.45VDDA 0.5VDDA 0.55VDDA V

−

24

−

kΩ

−

9.8

−

kΩ

−

20

−

pF

Digital-to-analog converter

Vref(D)

Ro(refD)

Ro

Io(max)

RL

CL

reference voltage

output resistance on pin Vref(D)

output resistance of DAC

maximum output current

load resistance

load capacitance

refererred to

VSSA(DAC)

0.45VDDA 0.5VDDA 0.55VDDA V

−

28

−

kΩ

−

0.13

3.0

Ω

(THD + N)/S < 0.1 −

0.22

−

mA

%; RL = 5 kΩ

3

−

−

kΩ

note 2

−

−

200

pF

Notes

1. All power supply pins (VDD and VSS) must be connected to the same external power supply unit.

2. When higher capacitive loads must be driven, a 100 Ω resistor must be connected in series with the DAC output in

order to prevent oscillations in the output operational amplifier.

2001 Jun 29

17

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