Datasheet > ADS1672_14

ADS1672_14

更新时间： 2024-11-25 02:58:15

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德州仪器 - TI		/
页数	文件大小	规格书
31页	871K
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625kSPS, 24-Bit Analog-to-Digital Converter

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ADS1672_14 数据手册

ADS1672

www.ti.com .............................................................................................................................................................. SBAS402A–JUNE 2008–REVISED JULY 2008

625kSPS, 24-Bit Analog-to-Digital Converter

FEATURES

DESCRIPTION

•

AC Performance:

The ADS1672 is

high-speed, high-precision

107dB of Dynamic Range at 625kSPS

115.5dB of Dynamic Range at 78kSPS

–115dB THD

analog-to-digital converter (ADC). Using an advanced

delta-sigma (ΔΣ) architecture, it operates at speeds

up to 625kSPS with outstanding ac performance and

dc accuracy.

•

DC Accuracy:

3ppm INL

2µV/°C Offset Drift

2ppm/°C Gain Drift

The ADS1672 ADC is comprised of a low-drift,

chopper-stabilized modulator with out-of-range

detection and a dual-path programmable digital filter.

The dual filter path allows the user to select between

Programmable Digital Filter with

User-Selectable Path:

two

post-processing

filters:

low-latency

wide-bandwidth. The low-latency filter settles quickly

in one cycle, for applications with large instantaneous

changes, such as a multiplexer. The wide-bandwidth

path provides an optimized frequency response for ac

measurements with a passband ripple of less than

0.001dB, stop band attenuation of 115dB, and a

bandwidth of 305kHz.

–

Low-Latency: Completely settles in 5.5µs

Wide-Bandwidth: 305kHz BW with flat

passband

•

Flexible Read-Only Serial Interface:

–

Standard CMOS

Serialized LVDS

The ADS1672 is controlled through I/O pins—there

are no registers to program. A dedicated START pin

allows for direct control of conversions: toggle the

START pin to begin a conversion, and then retrieve

the output data. The flexible serial interface supports

data readback with either standard CMOS and LVDS

logic levels, allowing the ADS1672 to directly connect

to a wide range of microcontrollers, digital signal

processors (DSPs), or field-programmable grid arrays

(FPGAs).

•

Easy Conversion Control with START Pin

Out-of-Range Detection

Supply: Analog +5V, Digital +3V

Power: 350mW

APPLICATIONS

•

Automated Test Equipment

Vibration Analysis

Sonar

The ADS1672 operates from an analog supply of 5V

and digital supply of 3V, and dissipates 350mW of

power. When not in use, the PDWN pin can be used

to power down all device circuitry. The device is fully

specified over the industrial temperature range and is

offered in a TQFP-64 package.

Test and Measurement

Data Ready

Data Output

CMOS and

LVDS

Dual Filter

Path

Compatible

Serial

Interface

Serial Shift Clock

Chip Select

Interface Configuration

Low-Latency Filter

AINP

AINN

Modulator

Master Clock

Filter Path

Data Rate

Wide-Bandwidth Filter

Start Conversion

Power Down

Control

Out-of-Range

ADS1672

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...31

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ADS1672IPAGRG4	TI	获取价格	625kSPS, 24-Bit Analog-to-Digital Converter
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ADS1675_14	TI	获取价格	4MSPS, 24-Bit Analog-to-Digital Converter
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