AD9203W

更新时间： 2024-10-27 12:28:35

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
8页	134K
描述
10-Bit, 40 MSPS, 3 V, 74 mW Analog-to-Digital Converter

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AD9203W 数据手册

10-Bit, 40 MSPS, 3 V, 74 mW

Analog-to-Digital Converter

Automotive Product

AD9203W

FEATURES

FUNCTIONAL BLOCK DIAGRAM

CLK

AVDD

DRVDD

CMOS 10-bit, 40 MSPS sampling analog-to-digital converter

Power dissipation: 74 mW (3 V supply, 40 MSPS)

17 mW (3 V supply, 5 MSPS)

Operation between 2.7 V and 3.6 V supply

Differential nonlinearity: −0.25 LSB

Power-down (standby) mode: 0.65 mW

ENOB: 9.55 at f_IN= 20 MHz

CLAMP

AD9203W

STBY

CLAMPIN

AINP

AINN

A/D

SHA

GAIN

SHA

GAIN

3-STATE

A/D

D/A

A/D

D/A

REFTF

REFBF

CORRECTION LOGIC

OUTPUT BUFFERS

Out-of-range indicator

BANDGAP

REFERENCE

OTR

Adjustable on-chip voltage reference

IF undersampling up to f_IN= 130 MHz

Input range: 1 V to 2 V p-p differential or single-ended

Adjustable power consumption

VREF

D9 (MSB)

REFSENSE

–

D0 (LSB)

0.5V

AVSS

PWRCON

DFS

DRVSS

Internal clamp circuit

Qualified for automotive applications

Figure 1.

APPLICATIONS

Automotive

GENERAL DESCRIPTION

The AD9203W is a monolithic low power, single supply, 10-bit,

40 MSPS analog-to-digital converter, with an on-chip voltage

reference. The AD9203W uses a multistage differential pipeline

architecture and guarantees no missing codes over the full

operating temperature range. Its input range may be adjusted

between 1 V and 2 V p-p.

can be used with the most significant bit to determine over- or

underrange.

The AD9203W can operate with a supply range from 2.7 V to

3.6 V, an attractive option for low power operation in high

speed portable applications.

The AD9203W is specified over industrial (−40°C to +85°C)

temperature ranges and is available in a 28-lead TSSOP package.

The AD9203W has an onboard programmable reference. An

external reference can also be chosen to suit the dc accuracy

and temperature drift requirements of an application.

PRODUCT HIGHLIGHTS

1. Low Power. The AD9203W consumes 74 mW on a 3 V

supply operating at 40 MSPS. In standby mode, power is

reduced to 0.65 mW.

2. High Performance. Maintains better than 9.55 ENOB at

40 MSPS input signal from dc to Nyquist.

3. Very Small Package. The AD9203W is available in a

28-lead TSSOP.

4. Programmable Power. The AD9203W power can be

further reduced by using an external resistor at lower

sample rates.

5. Built-In Clamp Function. Allows dc restoration of video

signals.

An external resistor can be used to reduce power consumption

when operating at lower sampling rates. This yields power

savings for users who do not require the maximum sample

rate. This feature is especially useful at sample rates far below

40 MSPS. Excellent performance is still achieved at reduced

power. For example, 9.7 ENOB performance may be realized

with only 17 mW of power, using a 5 MHz clock.

A single clock input is used to control all internal conversion

cycles. The digital output data is presented in straight binary or

twos complementary output format by using the DFS pin. An

out-of-range signal (OTR) indicates an overflow condition that

Rev. 0

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

12 3 4 5 6 7 8

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