Datasheet > TDA1314

TDA1314

更新时间： 2024-02-06 07:34:44

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
15页	140K
描述
Quadruple filter DAC

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TDA1314 数据手册

Philips Semiconductors

Product speciﬁcation

Quadruple ﬁlter DAC

TDA1314T

FEATURES

APPLICATIONS

• High dynamic range to enable digital DSP (Digital Signal

Processor) volume control

• Stand-alone quadruple low noise DAC

• Car radio DAC in conjunction with DSP.

• 18 bits data input format for each of the four channels

• Four times bit-serial oversampling filter

GENERAL DESCRIPTION

• 1st-order 4f_as(audio sampling frequency) noise shaper

• Four very low noise DACs

The TDA1314T is a quadruple very low noise high

dynamic range DAC which is intended for use in motor

cars and is controlled by the car radio DSP. Each channel

incorporates an 8th-order IIR up-sampling filter from 1ASF

to 4ASF followed by a 1st-order noise shaper and DAC.

The DAC currents are converted to audio voltage signals

using operational amplifiers (one per channel).

• Only 1st-order analog post filtering required

• Smooth power-on of the DAC output currents

• Because of the automatic digital PLL divider range

setting the master clock is selectable in a wide 4f_as

integer range

• Insensitive to jitter on the I²S-bus signals with respect to

the DAC total harmonic distortion deterioration.

QUICK REFERENCE DATA

V_ref= 2.5 and 5 V; T_amb= 25 °C; all voltages referenced to ground; unless otherwise speciﬁed.

SYMBOL

V_DDA

PARAMETER

CONDITIONS

MIN.

4.5

TYP.

5.0

MAX.

5.5

UNIT

analog supply voltage

digital supply voltage

DAC output current (FS)

V_DDD

4.5

5.0

±0.5

−

5.5

I_O(DAC)

V_O(DAC)

R_ref= 20.5 kΩ

±0.4

1.0

±0.6

4.0

DAC output voltage,

R_L≥ 5 kΩ; R_fb= 3 kΩ

nominal DAC operational

ampliﬁer output voltage

RES

DAC resolution

length of data input word

−

bits

(THD + N)/S

total harmonic distortion

plus noise-to-signal ratio

f_i= 1 kHz;

0 dB signal level

−66

−56

dynamic range of DAC

f_i= 1 kHz;

−

−60 dB signal level

digital silence

no signal; A-weighted

−

−110

−100

−

P_tot

total power dissipation

−

°C

T_amb

operating ambient

temperature

−40

+25

+85

ORDERING INFORMATION

PACKAGE

TYPE NUMBER

NAME

DESCRIPTION

VERSION

TDA1314T

SO28

plastic small outline package; 28 leads; body width 7.5 mm

SOT136-1

August 1994

12 3 4 5 6 7...15

中文翻译

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