ADC

ADC

ADC

ADC

ADC

AS1419

AS1419A

AS1419 & AS1419A

Rev. 1.5 08/09

Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.

1

Austin Semiconductor, Inc.

FEATURES

•

Sample Rate: 800ksps

• Power Dissipation: 150mW

• 81.5dB S/(N+D) and 93dB THD

• No Missing Codes

•

No Pipeline Delay

•

Nap and Sleep Shutdown Modes

•

Operates with 2.5V Internal 15ppm/°C Reference or

External Reference

•

True Differential Inputs Reject Common Mode Noise

•

20MHz Full-Power Bandwidth Sampling

•

Bipolar Input Range: ±2.5V

•

28-pin LCC and Flatpack packages

OPTIONS

MARKING

•

Package(s)

28-Pin Flat-pack

F

28-Pin LCC

ECA

•

Operating Temperature Ranges

XT

Industrial Temperature (-40°C to +85°C)

IT

Military Processing (-55°C to +125°C)

MIL

SPACE*

*As defined by individual customer Source Control

Drawing (SCD)

14 Bit, 800ksps Sampling

A/D Converter with Shutdown

For more products and information

please visit our web site at

www.austinsemiconductor.com

GENERAL DESCRIPTION

The AS1419 is a 1

μs, 800ksps, 14-bit sampling A/D

converter that draws only 150mW from ±5V supplies. This

easy-to-use device includes a high dynamic range sample-and-

hold and a precision reference. Two digitally selectable power

shutdown modes provide flexibility for low power systems.

The AS1419 has a full-scale input range of ±2.5V.

Outstanding AC performance includes 81.5dB S/(N + D) and

93dB THD with a 100kHz input; 80dB S/(N + D) and 86dB THD

at the Nyquist input frequency of 400kHz.

The unique differential input sample-and-hold can acquire

single-ended or differential input signals up to its 20MHz

bandwidth. The 60dB common mode rejection allows users to

eliminate ground loops and common mode noise by measuring

signals differentially from the source.

The ADC has a microprocessor compatible, 14-bit parallel

output port. There is no pipeline delay in the conversion

results. A separate convert start input and data ready signal

(BUSY\) ease connections to FIFOs, DSPs and

microprocessors.

PIN ASSIGNMENT

(Top View)

28-Pin Flat Pack (F)

+A

IN

-A

IN

V

REF

REFcomp

A

GND

D13

D12

D11

D10

D9

D8

D7

D6

D

GND

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

AV

DD

DV

DD

V

SS

BUSY\

CS\

CONVST\

RD\

SHDN\

D0

D1

D2

D3

D4

D5

28-Pin LCC (ECA)

4 3 2

28 27 26

12 13 14 15 16 17 18

5

6

7

8

9

10

11

25

24

23

22

21

20

19

A

GND

D13

D12

D11

D10

D9

D8

BUSY\

CS\

CONVST\

RD\

SHDN\

D0

D1

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Typical applications are telecommunications, digital

signal processing, multiplexed data acquisition systems, high

speed data acquisitions, spectrum analysis, and imaging

systems.