Datasheet > EVAL-AD7920CB

EVAL-AD7920CB

更新时间： 2024-11-27 12:53:43

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
24页	493K
描述
250 kSPS, 10-/12-Bit ADCs in 6-Lead SC70

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EVAL-AD7920CB 数据手册

250 kSPS,

10-/12-Bit ADCs in 6-Lead SC70

AD7910/AD7920

FUNCTIONAL BLOCK DIAGRAM

FEATURES

Throughput rate: 250 kSPS

Specified for V_DDof 2.35 V to 5.25 V

Low power

3.6 mW typ at 250 kSPS with 3 V supplies

12.5 mW typ at 250 kSPS with 5 V supplies

Wide input bandwidth

10-/12-BIT

SUCCESSIVE

APPROXIMATION

ADC

T/H

71 dB SNR at 100 kHz input frequency

Flexible power/serial clock speed management

No pipeline delays

High speed serial interface

SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible

Standby mode: 1 μA max

SCLK

SDATA

CONTROL LOGIC

AD7910/AD7920

6-lead SC70 package

8-lead MSOP package

GND

Figure 1.

APPLICATIONS

Battery-powered systems

Personal digital assistants

Medical instruments

Mobile communications

Instrumentation and control systems

Data acquisition systems

High speed modems

Optical sensors

GENERAL DESCRIPTION

PRODUCT HIGHLIGHTS

The AD7910/AD7920¹are, respectively, 10-bit and 12-bit, high

speed, low power, successive approximation ADCs. The parts

operate from a single 2.35 V to 5.25 V power supply and feature

throughput rates up to 250 kSPS. The parts contain a low noise,

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

frequencies in excess of 13 MHz.

1. 10-/12-bit ADCs in SC70 and MSOP packages.

2. Low power consumption.

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 power-down mode is used while not

converting. The part also features a power-down mode to

maximize power efficiency at lower throughput rates.

Current consumption is 1 μA maximum and 50 nA typically

when in power-down mode.

The conversion process and data acquisition are controlled

using

and the serial clock, allowing the devices to interface

with microprocessors or DSPs. The input signal is sampled on

the falling edge of

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

and the conversion is initiated at this

The AD7910/AD7920 use advanced design techniques to

achieve very low power dissipation at high throughput rates.

4. Reference derived from the power supply.

5. No pipeline delay. The parts feature a standard successive

approximation ADC with accurate control of the sampling

The reference for the part is taken internally from V_DD. This

allows the widest dynamic input range to the ADC. Thus, the

analog input range for the part is 0 to V_DD. The conversion rate

is determined by the SCLK.

instant via a

input and once-off conversion control.

¹Protected by U.S. Patent No. 6,681,332.

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

Fax: 781.461.3113

www.analog.com

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与EVAL-AD7920CB相关器件

型号	品牌	获取价格	描述	数据表
EVAL-AD7922_15	ADI	获取价格	Evaluation Board for 1 MSPS, 2-Channel, 12-/10-Bit ADCs
EVAL-AD7923CB2	ADI	获取价格	4-Channel, 200 kSPS, 12-Bit ADC with Sequencer in 16-Lead TSSOP
EVAL-AD7923CBZ	ADI	获取价格	4-Channel, 200 kSPS 12-Bit ADC with Sequencer in 16-Lead TSSOP
EVAL-AD7933CB	ADI	获取价格	4-Channel, 1.5 MSPS, 12-Bit and 10-Bit Parallel ADCs with a Sequencer
EVAL-AD7934-6CB	ADI	获取价格	4-Channel, 625 kSPS, 12-Bit Parallel ADC with a Sequencer
EVAL-AD7934CB	ADI	获取价格	4-Channel, 1.5 MSPS, 12-Bit and 10-Bit Parallel ADCs with a Sequencer
EVAL-AD7938-6CB	ADI	获取价格	8-Channel, 625 kSPS, 12-Bit Parallel ADCs with a Sequencer
EVAL-AD7938CBZ	ADI	获取价格	8-Channel, 1.5 MSPS, 12-Bit and 10-Bit Parallel ADCs with a Sequencer
EVAL-AD7940CB	ADI	获取价格	3mW, 100kSPS, 14-Bit ADC in 6-Lead SOT-23
EVAL-AD7940CBZ	ADI	获取价格	3 mW, 100 kSPS, 14-Bit ADC in 6-Lead SOT-23

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