Datasheet > AD7875KNZ1

AD7875KNZ1

更新时间： 2024-11-09 12:47:31

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
28页	621K
描述
LC2MOS Complete, 12-Bit, 100 kHz, Sampling ADCs

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AD7875KNZ1 数据手册

LC²MOS Complete,

12-Bit, 100 kHz, Sampling ADCs

AD7870/AD7875/AD7876

FEATURES

FUNCTIONAL BLOCK DIAGRAM

AGND

REF OUT

Complete monolithic 12-bit ADCs with

2 μs track-and-hold amplifier

8 μs ADC

AD7870/AD7875/

AD7876

INPUT

On-chip reference

SCALING

Laser-trimmed clock

TRACK-AND-HOLD

COMP

Parallel, byte, and serial digital interface

72 dB SNR at 10 kHz input frequency

(AD7870, AD7875)

12-BIT

DAC

REFERENCE

57 ns data access time

Low power: −60 mW typical

Variety of input ranges

3 V for AD7870

CLOCK

CLK

SAR +

COUNTER

0 V to +5 V for AD7875

10 V for AD7876

12/8/CLK

CONVST

CONTROL LOGIC

PARALLEL

AND SERIAL

INTERFACE

CS RD BUSY/INT DB11

DB0

DGND

Figure 1.

GENERAL DESCRIPTION

The AD7870/AD7875/AD7876 are fast, complete, 12-bit

analog-to-digital converters (ADCs). These converters consist

of a track-and-hold amplifier, an 8 μs successive approximation

ADC, a 3 V buried Zener reference, and versatile interface logic.

The ADCs feature a self-contained internal clock which is laser

trimmed to guarantee accurate control of conversion time. No

external clock timing components are required; the on-chip

clock may be overridden by an external clock if required.

The parts are available in a 24-pin, 0.3 inch-wide, plastic or

hermetic dual-in-line package (DIP). The AD7870 and AD7875

are available in a 28-pin plastic leaded chip carrier (PLCC),

while the AD7876 is available and in a 24-pin small outline

(SOIC) package.

PRODUCT HIGHLIGHTS

1. Complete 12-bit ADC on a chip.

The AD7870/AD7875/AD7876 provide all the functions

necessary for analog-to-digital conversion and combine a

12-bit ADC with internal clock, track-and-hold amplifier

and reference on a single chip.

The parts offer a choice of three data output formats: a single,

parallel, 12-bit word; two 8-bit bytes or serial data. Fast bus

access times and standard control inputs ensure easy interfacing

to modern microprocessors and digital signal processors.

2. Dynamic specifications for DSP users.

All parts operate from 5 V power supplies. The AD7870 and

AD7876 accept input signal ranges of 3 V and 10 V, respec-

tively, while the AD7875 accepts a unipolar 0 V to +5 V input

range. The parts can convert full power signals up to 50 kHz.

The AD7870 and AD7875 are fully specified and tested for

ac parameters, including signal-to-noise ratio, harmonic

distortion and intermodulation distortion.

3. Fast microprocessor interface.

The AD7870/AD7875/AD7876 feature dc accuracy specifica-

tions, such as linearity, full-scale and offset error. In addition,

the AD7870 and AD7875 are fully specified for dynamic

performance parameters including distortion and signal-to-

noise ratio.

Data access times of 57 ns make the parts compatible with

modern 8-bit and 16-bit microprocessors and digital signal

processors. Key digital timing parameters are tested and

guaranteed over the full operating temperature range.

Rev. C

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

rights of third parties that may result from its 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 and registeredtrademarks arethe 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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与AD7875KNZ1相关器件

型号	品牌	获取价格	描述	数据表
AD7875KP	ADI	获取价格	LC2MOS Complete, 12-Bit, 100 kHz, Sampling ADCs
AD7875KP-REEL	ADI	获取价格	IC 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PQCC28, PLASTIC, MO-0
AD7875KPZ	ADI	获取价格	CMOS, Complete 12-Bit 100 kHz, Sampling ADC with Uni 5V Input Range
AD7875KPZ1	ADI	获取价格	LC2MOS Complete, 12-Bit, 100 kHz, Sampling ADCs
AD7875KPZ-REEL	ADI	获取价格	CMOS, Complete 12-Bit 100 kHz, Sampling ADC with Uni 5V Input Range
AD7875KPZ-REEL1	ADI	获取价格	LC2MOS Complete, 12-Bit, 100 kHz, Sampling ADCs
AD7875KR	ADI	获取价格	暂无描述
AD7875KR	ROCHESTER	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PDSO24, SOIC-24
AD7875KR-REEL	ROCHESTER	获取价格	1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL/PARALLEL ACCESS, PDSO24, SOIC-24
AD7875KRZ	ADI	获取价格	CMOS, Complete 12-Bit 100 kHz, Sampling ADC with Uni 5V Input Range

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