STA3398 datasheet(16/77 Pages) STMICROELECTRONICS

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Electrical specifications

STA339BW

16/77

Doc ID 15251 Rev 5

3.5

Electrical specifications for the power section

The specifications given in this section are valid for the operating conditions: VCC =18V,

f= 1 kHz, fsw = 384 kHz, Tamb = 25° C and RL = 8 Ω, unless otherwise specified.

Table 7.

Electrical specifications - power section

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Output power BTL

THD = 1%

THD = 10%

Output power SE

THD = 1%

THD = 10%

RdsON

Power Pchannel/Nchannel MOSFET (total

bridge)

ld = 1.5 A

180

250

Ω

Power Pchannel RdsON matching

ld = 1.5 A

Power Nchannel RdsON matching

ld = 1.5 A

Idss

Power Pchannel/Nchannel leakage

VCC = 20 V

µA

ILDT

Low current dead time (static)

Resistive load(1)

IHDT

High current dead time (dynamic)

Iload = 1.5 A(1)

Rise time

Resistive load(1)

Fall time

Resistive load(1)

VCC

Supply voltage operating voltage

Ivcc

Supply current from VCC in power down

PWRDN = 0

0.1

Supply current from VCC in operation

PCM Input signal = -

60 dBfs,

Switching frequency

= 384 kHz,

No LC filters

Ivdd

Supply current FFX processing (reference

only)

Internal clock =

49.152 MHz

-55

Ilim

Overcurrent limit

(2)

3.03.8

4.0A

Isc

Short circuit protection

Hi-Z output

3.8

4.8

UVL

Undervoltage protection

3.5

4.3

tmin

Output minimum pulse width

No load

Dynamic range

100

SNR

Signal to noise ratio, ternary mode

A-weighted

100

Signal to noise ratio binary mode

PSSR

Power supply rejection ratio

FFX stereo mode,

<5 kHz

VRIPPLE = 1 V RMS

Audio input =

dither only

-80

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