Datasheet > EVAL-AD7091SDZ

EVAL-AD7091SDZ

更新时间： 2024-02-21 05:41:03

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
20页	448K
描述
1 MSPS, Ultralow Power, 12-Bit ADC in 8-Lead LFCSP

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EVAL-AD7091SDZ 数据手册

1 MSPS, Ultralow Power,

12-Bit ADC in 8-Lead LFCSP

Data Sheet

AD7091

FEATURES

FUNCTIONAL BLOCK DIAGRAM

REGCAP

Fast throughput rate of 1 MSPS

Specified for V_DDof 2.09 V to 5.25 V

INL of 1 LSB maximum

AD7091

Analog input range of 0 V to V_DD

Ultralow power

367 μA typical at 3 V and 1 MSPS

324 nA typical at 3 V in power-down mode

Reference provided by V_DD

Flexible power/throughput rate management

High speed serial interface: SPI®-/QSPI™-/MICROWIRE®-/

DSP-compatible

SDO

SCLK

12-BIT

SERIAL

INTERFACE

T/H

SAR

ADC

CLK

OSC

CONVERSION

CONTROL LOGIC

CONVST

GND

Figure 1.

Busy indicator

Power-down mode

8-lead, 2 mm × 2 mm LFCSP package

Temperature range: −40°C to +125°C

1100

1000

900

800

700

600

500

400

300

200

100

= 3V

APPLICATIONS

Battery-powered systems

Handheld meters

Medical instruments

Mobile communications

Instrumentation and control systems

Data acquisition systems

Optical sensors

Diagnostic/monitoring functions

Energy harvesting

200

400

600

800

1000

THROUGHPUT RATE (kSPS)

Figure 2. Power Dissipation vs. Throughput Rate

GENERAL DESCRIPTION

The AD7091 is a 12-bit successive approximation register

analog-to-digital converter (SAR ADC) that offers ultralow

power consumption (typically 367 μA at 3 V and 1 MSPS) while

achieving fast throughput rates (1 MSPS with a 50 MHz SCLK).

The AD7091 operates from a single 2.09 V to 5.25 V power

supply. The AD7091 also features an on-chip conversion clock

and a high speed serial interface.

The reference is derived internally from V_DD. This design allows

the widest dynamic input range to the ADC; that is, the analog

input range for the AD7091 is from 0 V to V_DD

PRODUCT HIGHLIGHTS

1. Lowest Power 12-Bit SAR ADC Available.

2. High Throughput Rate with Ultralow Power Consumption.

3. Flexible Power/Throughput Rate Management.

Average power scales with the throughput rate. Power-down

mode allows the average power consumption to be reduced

when the device is not performing a conversion.

4. Reference Derived from the Power Supply.

5. Single-Supply Operation.

The conversion process and data acquisition are controlled using

CONVST

signal and an internal oscillator. The AD7091 has a

serial interface that allows data to be read after the conversion

while achieving a 1 MSPS throughput rate. The AD7091 uses

advanced design and process techniques to achieve very low

power dissipation at high throughput rates.

Rev. A

Document Feedback

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.

Technical Support

www.analog.com

12 3 4 5 6 7...20

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