5

FN6742.2

November 1, 2013

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. 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.

Positive BTL output.

GND

Ground.

Power Supply.

Negative BTL output.

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 + 5kΩ)

ISL99201