Dynamic characteristics, Tda8932b, Nxp semiconductors – NXP Semiconductors TDA8932B User Manual

Page 19

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TDA8932B_4

© NXP B.V. 2008. All rights reserved.

Product data sheet

Rev. 04 — 18 December 2008

19 of 48

NXP Semiconductors

TDA8932B

Class-D audio amplifier

[1]

Measured with respect to pin CGND.

[2]

Measured with respect to pin V

SSD(HW)

.

13. Dynamic characteristics

T

act(th_fold)

thermal foldback activation
temperature

140

-

150

°

C

Oscillator reference; pin OSCIO

[2]

V

IH

HIGH-level input voltage

4.0

-

5

V

V

IL

LOW-level input voltage

0

-

0.8

V

V

OH

HIGH-level output voltage

4.0

-

5

V

V

OL

LOW-level output voltage

0

-

0.8

V

N

slave(max)

maximum number of slaves

driven by one master

12

-

-

-

Table 10.

Static characteristics

…continued

V

P

= 22 V; f

osc

= 320 kHz; T

amb

= 25

°

C; unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Table 11.

Switching characteristics

V

P

= 22 V; T

amb

= 25

°

C; unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Internal oscillator

f

osc

oscillator frequency

Rosc = 39 k

-

320

-

kHz

range

300

-

500

kHz

Timing PWM output: pins OUT1 and OUT2

t

r

rise time

I

O

= 0 A

-

10

-

ns

t

f

fall time

I

O

= 0 A

-

10

-

ns

t

w(min)

minimum pulse width

I

O

= 0 A

-

80

-

ns

Table 12.

SE characteristics

V

P

= 22 V; R

L

= 2

×

4

; f

i

= 1 kHz; f

osc

= 320 kHz; R

s

< 0.1

[1]

; T

amb

= 25

°

C; unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

THD+N

total harmonic
distortion-plus-noise

P

o

= 1 W

[2]

f

i

= 1 kHz

-

0.015

0.05

%

f

i

= 6 kHz

-

0.08

0.10

%

G

v(cl)

closed-loop voltage gain

V

i

= 100 mV; no load

29

30

31

dB

|∆

G

v

|

voltage gain difference

-

0.5

1

dB

α

cs

channel separation

P

o

= 1 W; f

i

= 1 kHz

70

80

-

dB

SVRR

supply voltage rejection ratio

Operating mode

[3]

f

i

= 100 Hz

-

60

-

dB

f

i

= 1 kHz

40

50

-

dB

|

Z

i

|

input impedance

differential

70

100

-

k

V

n(o)

output noise voltage

Operating mode; R

s

= 0

[4]

-

100

150

µ

V

Mute mode

[4]

-

70

100

µ

V

V

O(mute)

mute output voltage

Mute mode; V

i

= 1 V (RMS) and

f

i

= 1 kHz

-

100

-

µ

V

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