Datasheet > ADS7945_14

ADS7945_14

更新时间： 2024-11-26 02:58:23

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
49页	1327K
描述
14-Bit, 2 MSPS, Dual-Channel, Differential/Single-Ended, Ultralow-Power Analog-to-Digital Converters

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ADS7945_14 数据手册

ADS7945

ADS7946

www.ti.com

SBAS539B –JUNE 2011–REVISED SEPTEMBER 2011

14-Bit, 2 MSPS, Dual-Channel, Differential/Single-Ended,

Ultralow-Power Analog-to-Digital Converters

Check for Samples: ADS7945, ADS7946

FEATURES

DESCRIPTION

The ADS7945/6 are 14-bit, 2 MSPS analog-to-digital

•

Sample Rate: 2 MSPS

converters (ADCs), with differential and single-ended

inputs, respectively. The devices operate at a 2

MSPS sample rate with a standard 16-clock data

frame. The devices feature both outstanding dc

precision and excellent dynamic performance; the

ADS7946 is pin-compatible with the 8/10/12-bit

•

14-Bit, Pin-Compatible with 8/10/12-bit

ADS7947/8/9 Family (ADS7946)

•

Outstanding Performance:

–

SNR: 84 dB (ADS7945)

No Missing Codes

ADS7947/8/9 devices. The devices include

INL: 1.5 LSB (max) (ADS7945)

two-channel input multiplexer and low-power

successive approximation register (SAR) ADC with

an inherent sample-and-hold (S/H) input stage.

Low Power:

–

11.6 mW at 2 MSPS Operation

Auto Power-Down at Lower Speeds:

The ADS7945/6 support a wide analog supply range

that allows the full-scale input range to extend to ±5 V

differential or 5 V single-ended. A simple SPI™, with

a digital supply that can operate as low as 1.65 V,

allows for easy interfacing to a wide variety of digital

controllers. Automatic power-down can be enabled

when operating at slower speeds to dramatically

reduce power consumption.

–

7.2 mW at 500 kSPS

1.4 mW at 100 kSPS

0.3 mW at 20 kSPS

•

Wide Supply Range:

–

Analog: 2.7 V to 5.25 V

Digital: 1.65 V to AVDD

Offered in a tiny 3 mm × 3 mm QFN package, the

ADS7945/6 are fully specified over the extended

temperature range of –40°C to +125°C and are

•

Simple Serial Interface (SPI)

Fully Specified from –40°C to +125°C

Tiny Footprint: 3 mm × 3 mm QFN

suitable for

a wide variety of data acquisition

applications where high performance, low power, and

small package size are key.

APPLICATIONS

•

Optical Networking

Medical Instrumentation

Battery-Powered Equipment

Data Acquisition Systems

AVDD

REF

REFGND

DVDD

AVDD

REF

REFGND

DVDD

ADS7945

ADS7946

PDEN

AIN0P

AIN0

AIN0N

AIN0GND

SAR

MUX

S/H

SPI

MUX

S/H

SPI

SCLK

SDO

SCLK

SDO

ADC

AIN1N

AIN1P

AIN1GND

AIN1

CH SEL

GND

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.

All other 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...49

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与ADS7945_14相关器件

型号	品牌	获取价格	描述	数据表
ADS7945SRTER	TI	获取价格	14-Bit, 2 MSPS, Dual-Channel, Differential/Single-Ended, Ultralow-Power Analog-to-Digital
ADS7945SRTET	TI	获取价格	14-Bit, 2 MSPS, Dual-Channel, Differential/Single-Ended, Ultralow-Power Analog-to-Digital
ADS7946	TI	获取价格	14-Bit, 2 MSPS, Dual-Channel, Differential/Single-Ended, Ultralow-Power Analog-to-Digital
ADS7946SRTER	TI	获取价格	14-Bit, 2 MSPS, Dual-Channel, Differential/Single-Ended, Ultralow-Power Analog-to-Digital
ADS7946SRTET	TI	获取价格	14-Bit, 2 MSPS, Dual-Channel, Differential/Single-Ended, Ultralow-Power Analog-to-Digital
ADS7947	TI	获取价格	12/10/8-Bit 2MSPS, Dual-Channel Unipolar Pseudo-Differential Ultralow-Power SAR Analog-to-
ADS7947_14	TI	获取价格	12/10/8-Bit, 2MSPS, Dual-Channel, Unipolar, Pseudo-Differential, Ultralow-Power SAR Analog
ADS7947SRTER	TI	获取价格	12/10/8-Bit 2MSPS, Dual-Channel Unipolar Pseudo-Differential Ultralow-Power SAR Analog-to-
ADS7947SRTET	TI	获取价格	12/10/8-Bit 2MSPS, Dual-Channel Unipolar Pseudo-Differential Ultralow-Power SAR Analog-to-
ADS7948	TI	获取价格	12/10/8-Bit 2MSPS, Dual-Channel Unipolar Pseudo-Differential Ultralow-Power SAR Analog-to-

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