SA58670 datasheet(6/25 Pages) NXP

Part #	SA58670

Description	2.1 W/channel stereo class-D audio amplifier

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Manufacturer	NXP [NXP Semiconductors]

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SA58670_1

Product data sheet

Rev. 01 — 4 January 2008

6 of 25

NXP Semiconductors

SA58670

2.1 W/channel stereo class-D audio ampliﬁer

9.

Dynamic characteristics

[1]

VDD is the supply voltage on pins PVDD and pin AVDD.

Table 5.

Dynamic characteristics

Tamb =25 °C; RL =8 Ω; unless otherwise speciﬁed[1].

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Po

output power

per channel; f = 1 kHz; THD+N = 10 %

RL =8 Ω; VDD = 3.6 V

-

0.72

-

W

RL =8 Ω; VDD = 5.0 V

-

1.4

-

W

RL =4 Ω; VDD = 5.0 V

-

2.1

-

W

THD+N

total harmonic

distortion-plus-noise

VDD = 5.0 V; Gv(cl) = 6 dB; f=1kHz

Po = 0.5 W

-

0.11

-

%

Po = 1.0 W

-

0.14

-

%

SVRR

supply voltage ripple

rejection

Gv(cl) = 6 dB; f = 217 Hz

VDD = 3.6 V

-

−73

-

dB

VDD = 5.0 V

-

−77

-

dB

CMRR

common mode rejection

ratio

VDD = 5.0 V; Gv(cl) = 6 dB; f = 217 Hz

-

−69

-

dB

Zi

input impedance

Gv(cl) = 6 dB

-

28.1

-

k

Ω

Gv(cl) = 12 dB

-

17.3

-

k

Ω

Gv(cl) = 18 dB

-

9.8

-

k

Ω

Gv(cl) = 24 dB

-

5.2

-

k

Ω

td(sd-startup)

delay time from

shutdown to start-up

VDD = 3.6 V

-

3.5

-

ms

Vn(o)

output noise voltage

VDD = 3.6 V; f = 20 Hz to 20 kHz;

inputs are AC grounded

no weighting

-

35

-

µV

A weighting

-

27

-

µV

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