ISL99201IIAZ-TK datasheet(6/13 Pages) INTERSIL

Part #	ISL99201IIAZ-TK

Description	Filterless High Efficiency 1.5W Class D Mono Amplifier

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Manufacturer	INTERSIL [Intersil Corporation]

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6 / 13 page

6

FN6742.0

February 27, 2009

Pin Descriptions

SD

Shutdown Active Low. This signal is used to shut down and

activate the part. It is 1.8V to 5V compatible. During

shutdown, the part draws less than 100nA input current.

Coming out of shutdown takes 3.5ms and going into

shutdown is instantaneous.

SYNC

External clock input (available only in DFN). This pin allows

the chip to be synchronized to a system clock. This helps in

folding the spectral components and the switching harmonic

out of band of interest. The range of SYNC frequency is from

250kHz to 800kHz.

IN+

Positive Differential Input.

IN-

Negative Differential Input.

VO+

Positive BTL output.

GND

Ground (Analog ground in CSP)

VDD

Power Supply (Analog VDD in CSP)

VO-

Negative BTL output

PVDD

Power Supply (CSP only)

PGND

Power Ground (CSP only)

Block Diagram (Notes *)

S A W TOOTH

GENERA TO R

SH UTDOW N

LOGIC

OVE R

CU RRENT

PRO TECTIO N

BIA S AN D

R E FERENC E

C LIC K AN D P O P

S U PP R E SS IO N

VDD

VO -

VO +

SD

SY N C

1

IN +

IN-

GN D

GATE D R IV E

WITH

SRC

G A TE D R IVE

WITH

SR C

CO M P

COM P

VDD

VD D

+180°

+

-

+

-

+

-

+

-

Notes:

Gain = 6dB, 9.6dB, 12dB (gain setting)

Gain =

; with external resistor

140k

Ω

(Ri + 5k

Ω)

*TDFN only

ISL99201

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