ML2035IP datasheet(1/9 Pages) FAIRCHILD

Teilenummer	ML2035IP

Bauteilbeschribung	Serial Input Programmable Sine Wave Generator

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Hersteller	FAIRCHILD [Fairchild Semiconductor]

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February 1997

ML2035

Serial Input Programmable Sine Wave Generator

GENERAL DESCRIPTION

The ML2035 is a monolithic sinewave generator whose

output is programmable from DC to 25kHz. No external

components are required. The frequency of the sinewave

output is derived from either an external crystal or clock

input, providing a stable and accurate frequency

reference. The frequency is programmed by a 16-bit serial

data word. The ML2035 has a VOUT amplitude of ±VCC/2.

The ML2035 is intended for telecommunications and

modem applications that need low cost and accurate

generation of precise test tones, call progress tones, and

signaling tones.

BLOCK DIAGRAM

FEATURES

s

Programmable output frequency - DC to 25kHz

s

Low gain error and total harmonic distortion

s

3-wire SPI compatible serial microprocessor interface

with double buffered data latch

s

Fully integrated solution - no external components

required

s

Frequency resolution of 1.5Hz (

±0.75Hz) with a

12MHz clock input

s

Onboard 3 to 12MHz crystal oscillator

s

Synchronous or asynchronous data loading capability

s

Compatible with ML2031 and ML2032 tone detectors

and ML2004 logarithmic gain/attenuator

VOUT

LATI

SCK

SID

4

2

3

6

8-BIT

DAC

PHASE

ACCUMULATOR

& 512 POINT

SINE LOOK-UP

TABLE

8

16

16-BIT DATA LATCH

16-BIT SHIFT REGISTER

CRYSTAL

OSCILLATOR

÷4

CLK IN

8

GND

7

VCC

5

VSS

1

-

+

5k

Ω

5k

Ω

ZERO

DETECT

SMOOTHING

FILTER

REV. 1.0 10/10/2000

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