AD7482BSTZ

更新时间： 2024-12-01 12:33:51

品牌	Logo	应用领域
亚德诺 - ADI		转换器模数转换器 PC
页数	文件大小	规格书
20页	527K
描述
3 MSPS, 12-Bit SAR ADC

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AD7482BSTZ 数据手册

3 MSPS, 12-Bit SAR ADC

AD7482

FEATURES

FUNCTIONAL BLOCK DIAGRAM

DD AGND

DRIVE DGND

BIAS

Fast throughput rate: 3 MSPS

Wide input bandwidth: 40 MHz

No pipeline delays with SAR ADC

Excellent dc accuracy performance

2 parallel interface modes

Low power: 90 mW (full power) and 2.5 mW (nap mode)

Standby mode: 2 µA maximum

Single 5 V supply operation

2.5V

REFOUT

REFIN

BUF

REFERENCE

REFSEL

VIN

12-BIT

ALGORITHMIC

SAR

T/H

Internal 2.5 V reference

AD7482

Full-scale overrange mode (using 13th bit)

System offset removal via user access offset register

Nominal 0 V to 2.5 V input with shifted range capability

14-bit pin compatible upgrade AD7484 available

D12

D11

D10

MODE1

MODE2

CLIP

NAP

CONTROL

LOGIC AND I/O

REGISTERS

STBY

RESET

CONVST

Figure 1.

GENERAL DESCRIPTION

The AD7482 is a 12-bit, high speed, low power, successive

approximation ADC. The part features a parallel interface with

throughput rates up to 3 MSPS. The part contains a low noise,

wide bandwidth track-and-hold that can handle input frequencies

in excess of 40 MHz.

alive for a quick power-up while consuming 2.5 mW, and a

standby mode that reduces power consumption to a mere 10 μW.

The AD7482 features an on-board 2.5 V reference but can also

accommodate an externally provided 2.5 V reference source.

The nominal analog input range is 0 V to 2.5 V, but an offset

shift capability allows this nominal range to be offset by 200 mV.

This allows the user considerable flexibility in setting the bottom

end reference point of the signal range, a useful feature when

using single-supply op amps.

The conversion process is a proprietary algorithmic successive

approximation technique that results in no pipeline delays. The

input signal is sampled, and a conversion is initiated on the falling

CONVST

edge of the

signal. The conversion process is controlled

via an internally trimmed oscillator. Interfacing is via standard

parallel signal lines, making the part directly compatible with

microcontrollers and DSPs.

The AD7482 also provides an 8% overrange capability via a

13th bit. Therefore, if the analog input range strays outside the

nominal by up to 8%, the user can still accurately resolve the

signal by using the 13th bit.

The AD7482 provides excellent ac and dc performance specifica-

tions. Factory trimming ensures high dc accuracy, resulting in

very low INL, offset, and gain errors.

The AD7482 is powered by a 4.75 V to 5.25 V supply. The part

also provides a V_DRIVEpin that allows the user to set the voltage

levels for the digital interface lines. The range for this V_DRIVEpin

is 2.7 V to 5.25 V. The part is housed in a 48-lead LQFP package

and is specified over a −40°C to +85°C temperature range.

The part uses advanced design techniques to achieve very low

power dissipation at high throughput rates. Power consumption

in the normal mode of operation is 90 mW. There are two power

saving modes: a nap mode, which keeps the reference circuitry

Rev. B

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

rightsof third parties that may result fromits use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks andregisteredtrademarks are the property of their respective owners.

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

Tel: 781.329.4700

www.analog.com

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AD7482BSTZ 替代型号

型号	品牌	替代类型	描述	数据表
AD7482ASTZ	ADI	完全替代	3 MSPS, 12-Bit SAR ADC
AD7482AST	ADI	完全替代	3MSPS, 12-Bit SAR ADC
AD7482BST	ADI	功能相似	3MSPS, 12-Bit SAR ADC

与AD7482BSTZ相关器件

型号	品牌	获取价格	描述	数据表
AD7484	ADI	获取价格	3MSPS, 14-Bit SAR ADC
AD7484BST	ADI	获取价格	3MSPS, 14-Bit SAR ADC
AD7484BSTZ	ADI	获取价格	3 MSPS, 14-Bit SAR ADC
AD7485	AMICC	获取价格	1 MSPS, Serial 14-Bit SAR ADC
AD7485	ADI	获取价格	14位1 MSPS SAR ADC
AD7485BST	AMICC	获取价格	1 MSPS, Serial 14-Bit SAR ADC
AD7485BSTZ	ROCHESTER	获取价格	1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQFP48, 7 X 7 MM, ROHS COMPLIANT,
AD7490	ADI	获取价格	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP
AD7490_12	ADI	获取价格	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP
AD7490BCP	ADI	获取价格	16-Channel, 1 MSPS, 12-Bit ADC with Sequencer in 28-Lead TSSOP

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