AD7477ARTZ-REEL7 Analog Devices Inc, AD7477ARTZ-REEL7 Datasheet

AD7477ARTZ-REEL7

Manufacturer Part Number

AD7477ARTZ-REEL7

Description

IC,A/D CONVERTER,SINGLE,10-BIT,CMOS,TSOP,6PIN

Manufacturer

Analog Devices Inc

Datasheets

1.AD7477SRT-R2.pdf (24 pages)

2.AD7478ARTZ-REEL.pdf (24 pages)

Specifications of AD7477ARTZ-REEL7

Number Of Bits

Sampling Rate (per Second)

Data Interface

DSP, MICROWIRE™, QSPI™, Serial, SPI™

Number Of Converters

Power Dissipation (max)

17.5mW

Voltage Supply Source

Single Supply

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

SOT-23-6

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

For Use With

EVAL-AD7477CBZ - BOARD EVALUATION FOR AD7477

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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GENERAL DESCRIPTION

The AD7476A/AD7477A/AD7478A are 12-bit, 10-bit, and 8-bit

high speed, low power, successive-approximation ADCs, respec-

tively. The parts operate from a single 2.35 V to 5.25 V power

supply and feature throughput rates up to 1 MSPS. The parts

contain a low noise, wide bandwidth track-and-hold amplifier

that can handle input frequencies in excess of 13 MHz.

The conversion process and data acquisition are controlled using

CS and the serial clock, allowing the devices to interface with

microprocessors or DSPs. The input signal is sampled on the

falling edge of CS, and the conversion is also initiated at this point.

There are no pipeline delays associated with the parts.

The AD7476A/AD7477A/AD7478A use advanced design tech-

niques to achieve low power dissipation at high throughput rates.

The reference for the part is taken internally from V

allows the widest dynamic input range to the ADC. Thus, the

analog input range for the part is 0 to V

determined by the SCLK.

*Protected by U.S.Patent No. 6,681,332.

REV. C

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties that

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

FEATURES

Fast Throughput Rate: 1 MSPS

Specified for V

Low Power:

Wide Input Bandwidth:

Flexible Power/Serial Clock Speed Management

No Pipeline Delays

High Speed Serial Interface

Standby Mode: 1 A Max

6-Lead SC70 Package

8-Lead MSOP Package

APPLICATIONS

Battery-Powered Systems

Instrumentation and Control Systems

Data Acquisition Systems

High Speed Modems

Optical Sensors

3.6 mW Typ at 1 MSPS with 3 V Supplies

12.5 mW Typ at 1 MSPS with 5 V Supplies

71 dB SNR at 100 kHz Input Frequency

SPI

Personal Digital Assistants

Medical Instruments

Mobile Communications

/QSPI™/MICROWIRE™/DSP Compatible

of 2.35 V to 5.25 V

. The conversion rate is

, which

12-/10-/8-Bit ADCs in 6-Lead SC70

PRODUCT HIGHLIGHTS

1. First 8-/10-/12-bit ADCs in an SC70 package.

2. High throughput with low power consumption.

3. Flexible power/serial clock speed management. The conversion

4. Reference derived from the power supply.

5. No pipeline delay. The parts feature a standard successive-

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

AD7476A/AD7477A/AD7478A

rate is determined by the serial clock, allowing the conver-

sion time to be reduced through the serial clock speed increase.

This allows the average power consumption to be reduced

when a power-down mode is used while not converting. The

parts also feature a power-down mode to maximize power

efficiency at lower throughput rates. Current consumption is

1 µA max and 50 nA typically when in power-down mode.

approximation ADC with accurate control of the sampling

instant via a CS input and once-off conversion control.

FUNCTIONAL BLOCK DIAGRAM

2.35 V to 5.25 V, 1 MSPS,

T/H

AD7476A/AD7477A/AD7478A

APPROXIMATION

SUCCESSIVE-

12-/10-/8-BIT

CONTROL

LOGIC

ADC

GND

www.analog.com

SCLK

SDATA

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