QS7785PF 查看數據表（PDF） - Nippon Precision Circuits

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QS7785PF

3D 2/4-Channel Stereo Surround Synthesizer

Nippon Precision Circuits  

QS7785PF/CF

DC Characteristics

VCC = 9V, VDD = 5V, GND = 0V, Ta = 25°C

Parameter

Analog input impedance

Reference voltage output

HIGH-level input voltage

LOW-level input voltage

Input leakage current

LOW-level output voltage

Supply voltage (analog)

Supply voltage (digital)

Current consumption (analog)

Current consumption (digital)

Standby current (analog)

Symbol

Condition

ZAIN1

ZAIN2

V REFOUT

V IH

V IL

ILEAK

IILOPD

VOL

V CC

V DD

I CC

I DD

I CCSAVE

LIN, RIN

CIN

Digital inputs, VDD input voltage

SDA, SCL, 10V input voltage

ACK signal output from SDA, 3mA sink

current

Rating

Unit

min

typ

max

16

20

24

kΩ

8

10

12

–

VCC/2

–

V

0.7VDD

–

–

V

–

–

0.3V DD

V

−3

–

−3

–

3

µA

3

0

–

0.4

V

5

–

13

V

4.5

–

5.5

V

–

6

8

mA

–

0.3

0.5

mA

–

0.1

0.2

mA

Noise and THD Characteristics

VCC = 9V, VDD = 5V, GND = 0V, Ta = 25°C

Parameter

Symbol

Condition

Rating

Unit

min

typ

max

Bypass noise voltage

N BYP

BYP = HIGH, SUR = MONO = SP = LOW,

“A”-wgt, FLOUT, FROUT

–

10

20

µV RMS

Qsurround noise voltage (front)

N QSF

SUR = SP = HIGH, BYP = MONO = LOW,

“A”-wgt, FLOUT, FROUT

–

20

40

µV RMS

Qsurround noise voltage (surround)

N QSR

SUR = SP = HIGH, BYP = MONO = LOW,

“A”-wgt, SLOUT, SROUT

–

15

30

µV RMS

Bypass total harmonic distortion

BYP = SUR = HIGH, MONO = SP = LOW,

THDB LIN = RIN = 1VRMS, f = 1kHz, FLOUT,

–

FROUT, SLOUT, SROUT

–

0.1

%

Qsurround mono total harmonic

distortion

BYP = LOW, SUR = MONO = SP = HIGH,

THDQM LIN = RIN = 1VRMS, f = 1kHz, FLOUT,

–

FROUT, SLOUT, SROUT

–

0.1

%

NIPPON PRECISION CIRCUITS—5

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