TDA7285 datasheet(3/11 Pages) STMICROELECTRONICS

3 / 11 page

ELECTRICAL CHARACTERISTICS (VS = 3V; RL =32

Ω, Vol. Control = 2/3 Vref (pin 20);Tamb =25°C; f =

1KHz; unless otherwise specified

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Supply Range

1.8

Total Quiescent Drain Current

PLAYBACK AMPLIFIER

Gvo

Open Loop Gain

Close Loop Gain

Output Voltage

THD = 1%

600

750

THD

Total Harmonic Distortion

VO = 330mVrms

0.05

0.25

Bias Current

µA

Cross Talk

RS = 2.2K

Ω;VO = 330mVrms

Total Input Noise

RS = 2.2K

Ω; B = 22Hz to 22KHz

1.2

µV

SVR1

Ripple Rejection

RS = 2.2K

Ω; Vr = 100mVrms

f = 100Hz; CSVR = 100

µF

HEADPHONE DRIVER

VDC

Output DC Voltage

1.4

Output Power

THD = 10%

PO1

Transient Output Power

THD = 10% RL =16

Ω

Close Loop Gain

PO = 5mW

Volume Control range

THD

Total Harmonic Distortion

PO = 5mW

0.3

Cross Talk

PO =5mW; RS = 10K

Ω

SVR2

Ripple Rejection

RS = 600

Ω; Vr = 100mV

f = 100Hz; CSVR = 100

µF

MOTOR SPEED CONTROL

Vref

Motor Reference Voltage (pin 12)

0.18

0.20

0.22

Shunt Ratio

Im = 100mA

Vsat

Residual Voltage

Im = 100mA

0.13

0.30

∆ Vref

Vref

⁄ ∆ VS Line Regulation

Im = 100mA;

VS = 1.8 to 6V

0.20

0.8

%/V

∆ K

⁄ ∆ VS

Voltage Characteristics of Shunt

Ratio

Im = 100mA;

VS = 1.8 to 6V

0.80

%/V

∆ Vref

Vref

⁄ ∆ Im Load Regulation

Im = 30 to 200mA

0.015

0.08

%/mA

∆ K

⁄ ∆ Im

Current Characteristics of Shunt

Ratio

Im = 30 to 200mA

0.03

0.1

%/mA

∆ Vref

Vref

⁄ ∆ Tamb Temperature Characteristics of

Reference Voltage

Im = 100mA

Tamb = -20 to +60

°C

0.04

°C

∆ K

⁄ ∆ Tamb Temperature Characteristics of

Shunt Ratio

Im = 100mA

Tamb = -20 to +60

°C

0.02

°C

TDA7285

3/11

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