AD7450BRZ

更新时间： 2024-11-26 12:33:51

品牌	Logo	应用领域
亚德诺 - ADI		转换器模数转换器光电二极管 PC
页数	文件大小	规格书
22页	435K
描述
Differential Input, 1 MSPS 12-Bit ADC in SOIC-8 and SO-8

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AD7450BRZ 数据手册

Differential Input, 1 MSPS

12-Bit ADC in ꢀSOIC-8 and SO-8

AD7450

FEATURES

FUNCTIONAL BLOCK DIAGRAM

Fast Throughput Rate: 1 MSPS

Specified for V_DDof 3 V and 5 V

Low Power at Max Throughput Rate:

3.75 mW Max at 833 kSPS with 3 V Supplies

9 mW Max at 1 MSPS with 5 V Supplies

Fully Differential Analog Input

Wide Input Bandwidth:

IN+

12-BIT SUCCESSIVE

APPROXIMATION

ADC

T/H

IN–

70 dB SINAD at 300 kHz Input Frequency

Flexible Power/Serial Clock Speed Management

No Pipeline Delays

REF

High-Speed Serial Interface—SPI^TM/QSPI^TM

MICROWIRE^TM/DSP Compatible

Power-Down Mode: 1 ꢀA Max

8-Lead ꢀSOIC and SOIC Packages

SCLK

SDATA

AD7450

CONTROL

LOGIC

APPLICATIONS

Transducer Interface

Battery-Powered Systems

Data Acquisition Systems

Portable Instrumentation

Motor Control

GND

Communications

GENERAL DESCRIPTION

The AD7450 is a 12-bit, high-speed, low power, successive

approximation (SAR) analog-to-digital converter that features a

fully differential analog input. It operates from a single 3 V or 5 V

power supply and features throughput rates up to 833 kSPS or

1 MSPS, respectively.

The AD7450 uses advanced design techniques to achieve low

power dissipation at high throughput rates.

PRODUCT HIGHLIGHTS

1. Operation with either 3 V or 5 V power supplies.

This part contains a low noise, wide bandwidth, differential track

and-hold amplifier (T/H) that can handle input frequencies in

excess of 1 MHz with the –3 dB point typically being 20 MHz.

2. High throughput with low power consumption. With a 3 V

supply, the AD7450 offers 3.75 mW max power consumption

for 833 kSPS throughput.

The reference voltage for the AD7450 is applied externally to the

V_REFpin and can be varied from 100 mV to 3.5 V, depending

on the power supply and what suits the application. The value of

the reference voltage determines the common-mode voltage

range of the part. With this truly differential input structure and

variable reference input, the user can select a variety of input

ranges and bias points.

3. Fully differential analog input.

4. Flexible power/serial clock speed management. The conversion

rate is determined by the serial clock, allowing the power

to be reduced as the conversion time is reduced through

the serial clock speed increase. This part also features a

shutdown mode to maximize power efficiency at lower

throughput rates.

The conversion and data acquisition processes are controlled

using CS and the serial clock, allowing the device to interface

with microprocessors or DSPs. The input signals are sampled

on the falling edge of CS, and the conversion is also initiated at

this point.

5. Variable voltage reference input.

6. No pipeline delay.

7. Accurate control of the sampling instant via a CS input and

once-off conversion control.

The SAR architecture of this part ensures that there are no

pipeline delays.

8. ENOB > 8 bits typically with 100 mV reference.

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corporation.

Rev. A

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices.

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

Tel: 781/329-4700

www.analog.com

Fax: 781/461/3113

12 3 4 5 6 7...22

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AD7450BRZ 替代型号

型号	品牌	替代类型	描述	数据表
AD7450BR-REEL7	ADI	完全替代	IC 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, SOIC-8, Analog to Digit
AD7450BR-REEL	ADI	完全替代	IC 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, SOIC-8, Analog to Digit
AD7450BR	ADI	完全替代	Differential Input, 1MSPS, 12-Bit ADC in レSO-

与AD7450BRZ相关器件

型号	品牌	获取价格	描述	数据表
AD7451	ADI	获取价格	Pseudo Differential, 1MSPS, 12- & 10-Bit ADCs in 8-lead SOT-23
AD7451ARM	ADI	获取价格	IC 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, MO-187AA, MSOP-8, Analo
AD7451ARM-REEL7	ROCHESTER	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial Access, PDSO8, MO-187AA,
AD7451ARMZ	ADI	获取价格	Pseudo Differential Input, 1 MSPS, 10-/12-Bit ADCs in an 8-Lead SOT-23
AD7451ART-R2	ADI	获取价格	IC 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, MO-178BA, SOT-23, 8 PIN
AD7451ART-REEL7	ROCHESTER	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial Access, PDSO8, MO-178BA,
AD7451ARTZ-REEL7	ADI	获取价格	Pseudo Differential Input, 1 MSPS, 10-/12-Bit ADCs in an 8-Lead SOT-23
AD7451BRM	ADI	获取价格	Pseudo Differential, 1MSPS, 12- & 10-Bit ADCs in 8-lead SOT-23
AD7451BRM-REEL7	ROCHESTER	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 1 Channel, Serial Access, PDSO8, MO-187AA,
AD7451BRMZ	ADI	获取价格	Pseudo Differential Input, 1 MSPS, 10-/12-Bit ADCs in an 8-Lead SOT-23

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