CA3304A Intersil Corporation, CA3304A Datasheet

CA3304A

Manufacturer Part Number

CA3304A

Description

4-Bit / 25 MSPS / Flash A/D Converters

Manufacturer

Intersil Corporation

Datasheet

1.CA3304A.pdf (11 pages)

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Download datasheet (118Kb)

August 1997

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Features

• CMOS/SOS Low Power with Video Speed (Typ) . . 25mW

• Parallel Conversion Technique

• Single Power Supply Voltage . . . . . . . . . . . . 3V to 7.5V

• 25MHz Sampling Rate (40ns Conversion Time) at 5V

• 4-Bit Latched Three-State Output with Overﬂow and

•

• Inherent Resistance to Latch-Up Due to SOS Process

• Bipolar Input Range with Optional Second Supply

• Wide Input Bandwidth (Typ) . . . . . . . . . . . . . . . . 25MHz

Applications

• High Speed A/D Conversion

• Ultrasound Signature Analysis

• Transient Signal Analysis

• High Energy Physics Research

• General-Purpose Hybrid ADCs

• Optical Character Recognition

• Radar Pulse Analysis

• Motion Signature Analysis

• Robot Vision

• RSSI Circuits

Ordering Information

Pinout

CA3304E

CA3304AE

CA3304M

CA3304AM

CA3304D

CA3304AD

PART NUMBER LINEARITY (INL, DNL)

Supply

Data Change Outputs

LSB Maximum Nonlinearity (A Version)

0.125 LSB

0.25 LSB

DATA CHANGE (DC)

OVERFLOW (OF)

BIT 1 (LSB)

SAMPLING RATE

25MHZ (40ns)

25MHz (40ns)

BIT 2

BIT 3

BIT 4

CE2

CA3304 (SBDIP, PDIP, SOIC)

CA3304, CA3304A

TOP VIEW

4-7

Description

The Intersil CA3304 is a CMOS parallel (FLASH) analog-to-

digital converter designed for applications demanding both

low-power consumption and high speed digitization. Digitiz-

ing at 25MHz, for example, requires only about 35mW.

The CA3304 operates over a wide, full-scale signal input

voltage range of 0.5V up to the supply voltage. Power

consumption is as low as 10mW, depending upon the clock

frequency selected.

The intrinsic high conversion rate makes the CA3304 types

ideally suited for digitizing high speed signals. The overﬂow

bit makes possible the connection of two or more CA3304s

in series to increase the resolution of the conversion system.

A series connection of two CA3304s may be used to pro-

duce a 5-bit, 25MHz converter. Operation of two CA3304s in

parallel doubles the conversion speed (i.e., increases the

sampling rate from 25MHz to 50MHz). A data change pin

indicates when the present output differs from the previous,

thus allowing compaction of data storage.

Sixteen paralleled auto-balanced voltage comparators mea-

sure the input voltage with respect to a known reference to

produce the parallel-bit outputs in the CA3304. Fifteen com-

parators are required to quantize all input voltage levels in this

4-bit converter, and the additional comparator is required for

the overﬂow bit.

TEMP. RANGE (

-55 to 125

-40 to 85

CLK

CE1

REF

16 Ld PDIP

16 Ld SOIC (W)

16 Ld SBDIP

Flash A/D Converters

PACKAGE

4-Bit, 25 MSPS,

File Number

E16.3

M16.3

D16.3

PKG. NO.

1790.2

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