Datasheet > ADS7890_15

ADS7890_15

更新时间： 2024-11-10 02:58:15

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
25页	349K
描述
14-BIT, 1.25-MSPS LOW POWER SAR ANALOG-TO-DIGITAL CONVERTER

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中文翻译

获取价格

数据手册

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ADS7890_15 数据手册

ꢀ ꢁꢂ ꢃꢄ ꢅꢆ

SLAS409 − DECEMBER 2003

ꢇꢈ ꢉ ꢊꢋ ꢌꢍ ꢇꢎ ꢏꢐ ꢉꢑ ꢂ ꢒꢂ

ꢓ ꢔꢕ ꢒꢔꢕ ꢖꢗ ꢂꢀ ꢗ ꢀ ꢘꢀꢓ ꢔꢙ ꢉ ꢌꢔ ꢉ ꢁꢋ ꢙ ꢋꢌꢀꢓ ꢚꢔ ꢘ ꢛꢖ ꢗꢌꢖ ꢗ

FEATURES

APPLICATIONS

1.25 MHz Sample Rate, 14-Bit Resolution

Zero Latency

Unipolar, Pseudo Differential Input, Range:

− 0 V to 2.5 V

SPIE Compatible Serial Interface

77.5 dB SNR and −95 dB THD at 0.5 MHz I/P

Power Dissipation 45 mW at 1.25 MSPS

Nap Mode (10 mW Power Dissipation)

Power Down (10 mW)

Optical Networking (DWDM, MEMS Based

Switching)

Spectrum Analyzers

High Speed Data Acquisition Systems

High Speed Close-Loop Systems

Telecommunication

Internal Reference

Internal Reference Buffer

48-Pin TQFP Package

DESCRIPTION

The ADS7890 is a 14-bit 1.25-MSPS A-to-D converter with 2.5-V internal reference. The device includes a

capacitor based SAR A/D converter with inherent sample and hold. The device offers a 14-bit serial SPI or DSP

compatible interface. The device has a pseudo-differential input stage.

The −IN swing of 200 mV is useful to compensate for ground voltage mismatch between the ADC and sensor

and also to cancel common-mode noise. The device operates at lower power when used at lower conversion

rates because of the nap feature. The device is available in a 48-pin TQFP package.

SDO

SAR

Output

Latches

and

3-State

Drivers

+IN

−IN

CDAC

Comparator

CLOCK

REFIN

SCLK

Conversion

and

Control Logic

BUSY

2.5 V

REFOUT

Internal

Reference

PWD/RST

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.

SPI is a trademark of Motorola, Inc.

ꢒꢗ ꢔ ꢁꢜ ꢚ ꢌꢋ ꢔꢘ ꢁ ꢀꢌꢀ ꢝꢞ ꢟꢠ ꢡ ꢢꢣ ꢤꢝꢠꢞ ꢝꢥ ꢦꢧ ꢡ ꢡ ꢨꢞꢤ ꢣꢥ ꢠꢟ ꢩꢧꢪ ꢫꢝꢦ ꢣꢤꢝ ꢠꢞ ꢬꢣ ꢤꢨꢎ ꢒꢡ ꢠꢬꢧ ꢦꢤꢥ

ꢦ ꢠꢞ ꢟꢠꢡ ꢢ ꢤꢠ ꢥ ꢩꢨ ꢦ ꢝ ꢟꢝ ꢦ ꢣ ꢤꢝ ꢠꢞꢥ ꢩ ꢨꢡ ꢤꢭꢨ ꢤꢨ ꢡ ꢢꢥ ꢠꢟ ꢌꢨꢮ ꢣꢥ ꢋꢞꢥ ꢤꢡ ꢧꢢ ꢨꢞꢤ ꢥ ꢥꢤ ꢣꢞꢬ ꢣꢡ ꢬ ꢯ ꢣꢡ ꢡ ꢣ ꢞꢤꢰꢎ

ꢒꢡ ꢠ ꢬꢧꢦ ꢤ ꢝꢠ ꢞ ꢩꢡ ꢠ ꢦ ꢨ ꢥ ꢥ ꢝꢞ ꢱ ꢬꢠ ꢨ ꢥ ꢞꢠꢤ ꢞꢨ ꢦꢨ ꢥꢥ ꢣꢡ ꢝꢫ ꢰ ꢝꢞꢦ ꢫꢧꢬ ꢨ ꢤꢨ ꢥꢤꢝ ꢞꢱ ꢠꢟ ꢣꢫ ꢫ ꢩꢣ ꢡ ꢣꢢ ꢨꢤꢨ ꢡ ꢥꢎ

12 3 4 5 6 7...25

中文翻译

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与ADS7890_15相关器件

型号	品牌	获取价格	描述	数据表
ADS7890IPFBR	TI	获取价格	14-BIT, 1.25-MSPS LOW POWER SAR ANALOG-TO-DIGITAL CONVERTER
ADS7890IPFBRG4	TI	获取价格	1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQFP48, GREEN, PLASTIC, TQFP-48
ADS7890IPFBT	TI	获取价格	14-BIT, 1.25-MSPS LOW POWER SAR ANALOG-TO-DIGITAL CONVERTER
ADS7890IPFBTG4	TI	获取价格	14-BIT, 1.25-MSPS LOW POWER SAR ANALOG-TO-DIGITAL CONVERTER
ADS7891	BB	获取价格	14BIT 3 MSPS LOW POWER SAR ANALOG TO DIGITAL CONVERTER
ADS7891	TI	获取价格	14-BIT,3-MSPS LOW POWER SAR ANALOG-TO-DIGITAL CONVERTER
ADS7891IPFBR	TI	获取价格	具有内部基准电压的 2.7V 至 5.25V 数字、5V 模拟、14 位 3MSPS 并行
ADS7891IPFBRG4	TI	获取价格	1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQFP48, GREEN, PLASTIC, QFP-48
ADS7891IPFBT	TI	获取价格	14-BIT, 3-MSPS LOW POWER SAR ANALOG-TO-DIGITAL CONVERTER
ADS7924	TI	获取价格	2.2V, 12-Bit, 4-Channel, microPOWER™ ANALOG-T

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