ADC10064CIWM datasheet(1/14 Pages) NSC

Part #	ADC10064CIWM

Description	10-Bit 600 ns A/D Converter with Input Multiplexer and Sample/Hold

PDF	14 Pages

Scroll/Zoom	100%

Manufacturer	NSC [National Semiconductor (TI)]

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ADC10061/ADC10062/ADC10064

10-Bit 600 ns A/D Converter with Input Multiplexer and

Sample/Hold

General Description

Using an innovative, patented multistep* conversion tech-

nique, the 10-bit ADC10061, ADC10062, and ADC10064

CMOS analog-to-digital converters offer sub-microsecond

conversion times yet dissipate a maximum of only 235 mW.

The ADC10061, ADC10062, and ADC10064 perform a

10-bit conversion in two lower-resolution “flashes”, thus

yielding a fast A/D without the cost, power dissipation, and

other problems associated with true flash approaches. The

ADC10061 is pin-compatible with the ADC1061 but much

faster, thus providing a convenient upgrade path for the

ADC1061.

The analog input voltage to the ADC10061, ADC10062, and

ADC10064 is sampled and held by an internal sampling

circuit. Input signals at frequencies from dc to over 200 kHz

can therefore be digitized accurately without the need for an

external sample-and-hold circuit.

The ADC10062 and ADC10064 include a “speed-up” pin.

Connecting an external resistor between this pin and ground

reduces the typical conversion time to as little as 350 ns with

only a small increase in linearity error.

For ease of interface to microprocessors, the ADC10061,

ADC10062, and ADC10064 have been designed to appear

as a memory location or I/O port without the need for exter-

nal interface logic.

*U.S. Patent Number 4918449

Features

n

Built-in sample-and-hold

n

Single +5V supply

n

1, 2, or 4-input multiplexer options

n

No external clock required

n

Speed adjust pin for faster conversions (ADC10062

and ADC10064). See ADC10662/4 for high speed

guaranteed performance.

Key Specifications

n

Conversion time to 10 bits

600 ns typical,

n

900 ns max over temperature

n

Sampling Rate

800 kHz

n

Low power dissipation

235 mW (max)

n

Total unadjusted error

±1.0 LSB (max)

n

No missing codes over temperature

Applications

n

Digital signal processor front ends

n

Instrumentation

n

Disk drives

n

Mobile telecommunications

Simplified Block Diagram

01102001

*ADC10061 Only

**ADC10062 and ADC10064 Only

***ADC10064 Only

November 2001

DS011020

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ADC10064CIWM Datasheet(PDF) 1 Page - National Semiconductor (TI)

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