PT2257-SL 查看數據表（PDF） - Princeton Technology

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PT2257-SL

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

VCC

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

Operating Voltage

Operating Current

Volume Attenuation Range

Attenuation Step

Attenuation Step Gain Error

Interchannel Attenuation

Gain Error

Symbol

VCC

ICC

ARANGE

ASTEP

GERR

CERR

Maximum Output Voltage

Vomax

Total Harmonic Distortion

THD

Noise Output

Signal-to-Noise Ratio

Channel Separation

No

SNR

CS

Condition

VCC=9V, VI=0V

Minimum Attenuation

Maximum Attenuation

Min. Typ. Max. Unit

4 9 10 V

-

9 15 mA

-

0

- -79

-

-

dB

-

1

- dB

- 0.5 - dB

- 0.5 - dB

VCC=9V, f=1KHz Volume

Att=0dB Rload=50K,

2.0 2.3 2.5 Vrms

THD<1%

f=1KHz,

Volume

Vout=2Vrms - 0.07 0.09

Att=0dB,

A-weighted

Rload=50K

Vout=200m

Vrms

-

%

0.003 0.005

Vin=GND, MUTE=OFF

Volume Att=0dB

-

2

3 µVrms

A-weighted

0dB=1Vrms, No-weighted 95 100 103

ATT=0dB,

A-weighted

A-weighted 110 120 125

dB

Vin=2.5Vrms, f=1KHz

Volume Att=0dB

100 120 125 dB

Mute Attenuation

MUTE

Vin=2.5Vrms, f=1KHz

Volume Att=0dB, A-weighted

90

95

97

dB

Frequency Response

Input Impedance

FR

Vin=1Vrms,

Volume Att=-10dB

-

1 1.3 MHz

Rin

f=1KHz

18 20 - KΩ

Output Impedance

Rout

f=1KHz, Vout=100m Vrms - 100 -

Ω

PT2257 V1.3

-9-

December, 2006

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