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RECOMMENDED OPERATING CONDITIONS

AUDIO SPECIFICATIONS (BTL)

TAS5342

SLAS557B–SEPTEMBER 2007–REVISED OCTOBER 2007

MIN

TYP

MAX

UNIT

PVDD_X

Half-bridge supply voltage

0

31.5

34

V

Supply voltage for logic regulators and

GVDD_X

10.8

12

13.2

V

gate-drive circuitry

VDD

Digital regulator supply voltage

10.8

12

13.2

V

RL (BTL)

3

4

Resistive load impedance (no Cycle-by_Cycle

RL (SE)

current control), recommended demodulation

2.25

3

Ω

filter

RL (PBTL)

1.5

2

LOutput (BTL)

5

10

Minimum output inductance under

LOutput (SE)

Output-filter inductance

5

10

μ

H

short-circuit condition

LOutput (PBTL)

5

10

fS

PWM frame rate

192

384

432

kHz

tLOW

Minimum low-state pulse duration per PWM

30

nS

Frame, noise shaper enabled

CPVDD

PVDD close decoupling capacitors

0.1

μ

F

CBST

Bootstrap capacitor, selected value supports

33

nF

PWM frame rates from 192 kHz to 432 kHz

ROC

Over-current programming resistor

Resistor tolerance = 5%

27

27

47

kΩ

REXT-PULLUP

External pull-up resistor to +3.3V to +5.0V for

3.3

4.7

kΩ

SD or OTW

TJ

Junction temperature

0

125

°C

Audio performance is recorded as a chipset consisting of a TAS5518 pwm processor (modulation index limited to 97.7%) and

a TAS5342 power stage. PCB and system configuraton are in accordance with recommended guidelines. Audio frequency =

1 kHz, PVDD_x = 31.5 V, GVDD_x = 12 V, RL = 4 Ω, fS = 384 kHz, ROC = 27 kΩ, TC = 75°C, Output Filter: LDEM = 10 μH,

CDEM = 470 nF, unless otherwise noted.

TAS5342

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

RL = 4 Ω, 10% THD+N, clipped input

100

signal

RL = 6 Ω, 10% THD+N, clipped input

POMAX

Maximum Power Output

80

signal

RL = 8 Ω, 10% THD+N, clipped input

65

W

signal

RL = 4 Ω, 0 dBFS, unclipped input

80

signal

RL = 6 Ω, 0 dBFS, unclipped input

PO

Unclipped Power Output

64

signal

RL = 8 Ω, 0 dBFS, unclipped input

50

signal

0 dBFS; AES17 filter

0.2%

THD+N

Total harmonic distortion + noise

1 W; AES17 filter

0.09%

Vn

Output integrated noise

A-weighted, AES17 filter, Auto mute

μ

V

45

disabled

SNR

Signal-to-noise ratio (1)

A-weighted, AES17 filter, Auto mute

110

dB

disabled

A-weighted, input level = –60 dBFS,

DNR

Dynamic range

110

dB

AES17 filter

DC Offset

Output offset voltage

+/- 15

mV

Pidle

Power dissipation due to idle losses (IPVDD_X) PO = 0 W, all halfbridges switching(2)

2

W

(1) SNR is calculated relative to 0-dBFS input level.

(2) Actual system idle losses are affected by core losses of output inductors.

8

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Product Folder Link(s): TAS5342

Not Recommended for New Designs