ADS8284

更新时间： 2024-11-23 06:36:27

品牌	Logo	应用领域
德州仪器 - TI		驱动器
页数	文件大小	规格书
38页	1827K
描述
18-BIT, 1-MSPS, PSEUDO-BIPOLAR DIFFERENTIAL SAR ADC WITH ON-CHIP ADC DRIVER (OPA) AND 4-CHANNEL DIFFERENTIAL MULTIPLEXER

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ADS8284 数据手册

ADS8284

www.ti.com................................................................................................................................................................................................... SLAS628–MARCH 2009

18-BIT, 1-MSPS, PSEUDO-BIPOLAR DIFFERENTIAL SAR ADC WITH ON-CHIP ADC

DRIVER (OPA) AND 4-CHANNEL DIFFERENTIAL MULTIPLEXER

FEATURES

APPLICATIONS

•

Medical Imaging/CT Scanners

Automated Test Equipment

High-Speed Data Acquisition Systems

High-Speed Closed-Loop Systems

•

1.0-MHz Sample Rate, Zero Latency at Full

Speed

•

18-Bit Resolution

Supports Pseudo-Bipolar Differential Input

Range: -4 V to +4 V with 2-V Common-Mode

DESCRIPTION

•

Built-In Four Channel, Differential Ended

Multiplexer; with Channel Count Selection and

Auto/Manual Mode

The ADS8284 is

high-performance analog

system-on-chip (SoC) device with an 18-bit, 1-MSPS

A/D converter, 4-V internal reference, an on-chip

ADC driver (OPA), and a 4-channel differential

multiplexer. The channel count of the multiplexer and

auto/manual scan modes of the device are user

selectable.

•

On-Board Differential ADC Driver (OPA)

Buffered Reference Output to Level Shift

Bipolar ±4-V Input with External Resistance

Divider

•

Reference/2 Output to Set Common-Mode for

External Signal Conditioner

The ADC driver is designed to leverage the very high

noise performance of the differential ADC at optimum

power usage levels.

•

18-/16-/8-Bit Parallel Interface

SNR: 98.4dB Typ at 2-kHz I/P

THD: –119dB Typ at 2-kHz I/P

The ADS8284 outputs a buffered reference signal for

level shifting of a ±4-V bipolar signal with an external

resistance divider. A V_ref/2 output signal is available

to set the common-mode of a signal conditioning

circuit. The device also includes an 18-/16-/8-bit

parallel interface.

Power Dissipation: 331.25 mW at 1 MSPS

Including ADC Driver

•

Internal Reference

Internal Reference Buffer

64-Pin QFN Package

The ADS8284 is available in a 9 mm x 9 mm, 64-pin

QFN package and is characterized from -40°C to

85°C.

HIGH-SPEED SAR CONVERTER FAMILY

TYPE/SPEED

18-Bit Pseudo-Diff

500 kHz

~600 kHz

750 kHz

1 MHz

1.25 MHz

2 MHz

3 MHz

4MHz

ADS8383

ADS8381

ADS8481

ADS8380 (s)

ADS8382 (s)

ADS8284

ADS8482

ADS8471

ADS8484

18-Bit Pseudo-Bipolar, Fully Diff

16-Bit Pseudo-Diff

ADS8327

ADS8328

ADS8319

ADS8318

ADS8370 (s)

ADS8372 (s)

ADS8371

ADS8401

ADS8405

ADS8411

ADS8410 (s)

ADS8472

ADS8254

ADS8402

ADS8406

ADS8412

ADS8422

ADS7881

16-Bit Pseudo-Bipolar, Fully Diff

ADS8413 (s)

14-Bit Pseudo-Diff

12-Bit Pseudo-Diff

ADS7890 (s)

ADS7891

ADS7886

ADS7883

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.

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...38

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与ADS8284相关器件

型号	品牌	获取价格	描述	数据表
ADS8284_14	TI	获取价格	ADS8284 18-BIT, 1-MSPS, Pseudo-Bipolar Differential SAR ADC with On-Chip ADC Driver (OPA)
ADS8284IBRGCR	TI	获取价格	18-BIT, 1-MSPS, PSEUDO-BIPOLAR DIFFERENTIAL SAR ADC WITH ON-CHIP ADC DRIVER (OPA) AND 4-CH
ADS8284IBRGCT	TI	获取价格	18-BIT, 1-MSPS, PSEUDO-BIPOLAR DIFFERENTIAL SAR ADC WITH ON-CHIP ADC DRIVER (OPA) AND 4-CH
ADS8284IRGCR	TI	获取价格	18-BIT, 1-MSPS, PSEUDO-BIPOLAR DIFFERENTIAL SAR ADC WITH ON-CHIP ADC DRIVER (OPA) AND 4-CH
ADS8284IRGCT	TI	获取价格	18-BIT, 1-MSPS, PSEUDO-BIPOLAR DIFFERENTIAL SAR ADC WITH ON-CHIP ADC DRIVER (OPA) AND 4-CH
ADS8285IBRGCR	TI	获取价格	8-CH 18-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQCC64, 9 X 9 MM, PLASTIC, VQFN
ADS8285IBRGCT	TI	获取价格	8-CH 18-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQCC64, 9 X 9 MM, PLASTIC, VQFN
ADS8285IRGCR	TI	获取价格	8-CH 18-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQCC64, 9 X 9 MM, PLASTIC, VQFN
ADS8285IRGCT	TI	获取价格	8-CH 18-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PQCC64, 9 X 9 MM, PLASTIC, VQFN
ADS828E	BB	获取价格	10-Bit, 75MHz Sampling ANALOG-TO-DIGITAL CONVERTER

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