PT2257 View Datasheet(PDF) - Princeton Technology

Part Name

Description

MFG CO.

PT2257

Electronic Volume Controller IC

Princeton Technology 

Electronic Volume Controller IC

Tel: 886-2-66296288

Fax: 886-2-29174598

URL: http://www.princeton.com.tw

PT2257

ABSOLUTE MAXIMUM RATING

Parameter

Supply voltage

Operating temperature

Storage temperature

Symbol

Rating

Unit

VDD

12

V

Topr

-40 to +85

℃

Tstg

-65 to +150

℃

Input voltage

VI

-0.3 to VCC+0.3

V

AUDIO SECTION ELECTRICAL CHARACTERISTICS

Parameter

Symbol

Condition

Operating voltage

VDD

Operating current

IDD

Volume attenuation range ARANGE

VDD=9V, VI=0V

Minimum Attenuation

Maximum Attenuation

Attenuation step

ASTEP

Joint step gain error

GERR

Inter-channel attenuation

gain error

CERR

Maximum output level

Vomax

VDD=9V, F=1KHz Volume

Att=0dB Rload=50K, THD<1%

Total harmonic distortion

THD

F =1KHz,

Volume Att=0dB,

Vout=2Vrms

A-weighted

Vout=200m

Rload=50K

Vrms

Noise output

No

Vin=GND, MUTE=OFF

Volume Att=0dB, A-weighted

Signal-to-Noise ratio

SNR

0dB=Vomax,

ATT=0dB

22~22KHz

A-weighted

Channel separation

CS

Vin=2.5Vrms,

F=1KHz,Volume=0dB

Mute attenuation

MUTE

Vin=2.5Vrms, F=1KHz

Volume Att=0dB, A-weighted

Frequency response

FR

Vin=1Vrms,

Volume Att=-10dB

Min. Typ. Max. Unit

3 9 10 V

-

9 15 mA

-0.5 0

-

-72 -79 -

dB

-

1

-

dB

- 0.5 - dB

- 0.5 - dB

2.0 2.3 2.5 Vrms

- 0.07 0.09

%

- 0.003 0.005

-

2

3 µVrms

90 100 103

110 120 123

dB

100 120 125 dB

90 95 97 dB

-

1 1.3 MHz

Input impedance

Rin

F=1KHz

15 20 26 KΩ

Output impedance

Rout

F=1KHz, Vout=100m Vrms

- 100 -

Ω

Minimum load resistance Rload VDD=9V, Vo=2Vrms,THD<1% 2

-

- KΩ

PT2257 V1.4

-9-

May, 2008

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