Datasheet > AD7940BRJZ-REEL7

AD7940BRJZ-REEL7

更新时间： 2024-11-27 12:33:51

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
20页	354K
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3 mW, 100 kSPS, 14-Bit ADC in 6-Lead SOT-23

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AD7940BRJZ-REEL7 数据手册

3 mW, 100 kSPS,

14-Bit ADC in 6-Lead SOT-23

AD7940

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Fast throughput rate: 100 kSPS

Specified for V_DDof 2.5 V to 5.5 V

Low power

14-BIT SUCCESSIVE

T/H

APPROXIMATION

ADC

4 mW typ at 100 kSPS with 3 V supplies

17 mW typ at 100 kSPS with 5 V supplies

Wide input bandwidth:

SCLK

SDATA

81 dB SINAD at 10 kHz input frequency

Flexible power/serial clock speed management

No pipeline delays

CONTROL

LOGIC

AD7940

High speed serial interface

GND

SPI®/QSPI™/MICROWIRE™/DSP compatible

Standby mode: 0.5 µA max

Figure 1.

6-Lead SOT-23 and 8-Lead MSOP packages

Table 1. 16-Bit and 14-Bit ADC (MSOP and SOT-23)

APPLICATIONS

Type

100 kSPS 250 kSPS 500 kSPS

Battery-powered systems

Personal digital assistants

Medical instruments

Mobile communications

Instrumentation and control systems

Remote data acquisition systems

16-Bit True Differential

16-Bit Pseudo Differential

16-Bit Unipolar

14-Bit True Differential

14-Bit Pseudo Differential

14-Bit Unipolar

AD7684

AD7683

AD7680

AD7687

AD7685

AD7688

AD7686

AD7944

AD7942

AD7947

AD7946

AD7940

This part features a standard successive approximation ADC

GENERAL DESCRIPTION

The AD7940¹is a 14-bit, fast, low power, successive

with accurate control of the sampling instant via a

once off conversion control.

input and

approximation ADC. The part operates from a single 2.50 V to

5.5 V power supply and features throughput rates up to 100 kSPS.

The part contains a low noise, wide bandwidth track-and-hold

amplifier that can handle input frequencies in excess of 7 MHz.

PRODUCT HIGHLIGHTS

1. First 14-bit ADC in a SOT-23 package.

2. High throughput with low power consumption.

The conversion process and data acquisition are controlled

3. Flexible power/serial clock speed management. The

conversion rate is determined by the serial clock, allowing

the conversion time to be reduced through the serial clock

speed increase. This allows the average power consumption

to be reduced when a power-down mode is used while not

converting. The part also features a shutdown mode to

maximize power efficiency at lower throughput rates.

Power consumption is 0.5 µA max when in shutdown.

4. Reference derived from the power supply.

using

with microprocessors or DSPs. The input signal is sampled on

and the serial clock, allowing the devices to interface

the falling edge of

and the conversion is also initiated at this

point. There are no pipelined delays associated with the part.

The AD7940 uses advanced design techniques to achieve very

low power dissipation at fast throughput rates. The reference for

the part is taken internally from V_DD, which allows the widest

dynamic input range to the ADC. Thus, the analog input range

for this part is 0 V to V_DD. The conversion rate is determined by

the SCLK frequency.

5. No pipeline delay.

¹Protected by US. Patent No. 6,681,332.

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, 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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AD7940BRJZ-REEL7 替代型号

型号	品牌	替代类型	描述	数据表
AD7940BRJ-REEL7	ADI	完全替代	3mW, 100kSPS, 14-Bit ADC in 6-Lead SOT-23
AD7940BRJ-R2	ADI	完全替代	3mW, 100kSPS, 14-Bit ADC in 6-Lead SOT-23
AD7940BRJ	ADI	功能相似	3 mW, 100 kSPS, 14-Bit ADC in 6-Lead SOT-23

与AD7940BRJZ-REEL7相关器件

型号	品牌	获取价格	描述	数据表
AD7940BRM	ADI	获取价格	3mW, 100kSPS, 14-Bit ADC in 6-Lead SOT-23
AD7940BRM	ROCHESTER	获取价格	1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO8, MO-187AA, MSOP-8
AD7940BRM-REEL7	ADI	获取价格	3mW, 100kSPS, 14-Bit ADC in 6-Lead SOT-23
AD7940BRMZ	ADI	获取价格	3 mW, 100 kSPS, 14-Bit ADC in 6-Lead SOT-23
AD7940BRMZ-REEL7	ADI	获取价格	3 mW, 100 kSPS, 14-Bit ADC in 6-Lead SOT-23
AD7942	ADI	获取价格	14-Bit, 250 kSPS PulSAR ADC in MSOP/QFN
AD7942_17	ADI	获取价格	Pseudo Differential ADC in MSOP/LFCSP
AD79421	ADI	获取价格	14-Bit, 500 kSPS PulSAR ADC in MSOP
AD7942BCPRL7	ADI	获取价格	14-Bit, 250 kSPS PulSAR ADC in MSOP/QFN
AD7942BCPWP	ADI	获取价格	14-Bit, 250 kSPS PulSAR ADC in MSOP/QFN

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