AD9244BSTZ-40 Analog Devices, AD9244BSTZ-40 Datasheet

AD9244BSTZ-40

Manufacturer Part Number

AD9244BSTZ-40

Description

Manufacturer

Analog Devices

Datasheet

1.AD9244BSTZ-40.pdf (36 pages)

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FEATURES

14-bit, 40 MSPS/65 MSPS ADC

Low power

On-chip reference and sample-and-hold

750 MHz analog input bandwidth

SNR > 73 dBc to Nyquist @ 65 MSPS

SFDR > 86 dBc to Nyquist @ 65 MSPS

Differential nonlinearity error = ±0.7 LSB

Guaranteed no missing codes over full temperature range

1 V to 2 V p-p differential full-scale analog input range

Single 5 V analog supply, 3.3 V/5 V driver supply

Out-of-range indicator

Straight binary or twos complement output data

Clock duty cycle stabilizer

Output-enable function

48-lead LQFP package

APPLICATIONS

Communication subsystems (microcell, picocell)

Medical and high-end imaging equipment

Test and measurement equipment

GENERAL DESCRIPTION

The AD9244 is a monolithic, single 5 V supply, 14-bit,

40 MSPS/65 MSPS ADC with an on-chip, high performance

sample-and-hold amplifier (SHA) and voltage reference.

The AD9244 uses a multistage differential pipelined architec-

ture with output error correction logic to provide 14-bit

accuracy at 40 MSPS/65 MSPS data rates, and guarantees no

missing codes over the full operating temperature range.

The AD9244 has an on-board, programmable voltage reference.

An external reference can also be used to suit the dc accuracy

and temperature drift requirements of the application.

A differential or single-ended clock input controls all internal

conversion cycles. The digital output data can be presented in

straight binary or in twos complement format. An out-of-range

(OTR) signal indicates an overflow condition that can be used

with the most significant bit to determine low or high overflow.

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 registered trademarks are the property of their respective owners.

550 mW at 65 MSPS

300 mW at 40 MSPS

14-Bit, 40 MSPS/65 MSPS A/D Converter

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

Fabricated on an advanced CMOS process, the AD9244 is

available in a 48-lead LQFP and is specified for operation over

the industrial temperature range (–40°C to +85°C).

PRODUCT HIGHLIGHTS

1. Low Power—The AD9244, at 550 mW, consumes a fraction

2. IF Sampling—The AD9244 delivers outstanding

3. Pin Compatibility—The AD9244 offers a seamless

4. On-Board Sample-and-Hold (SHA)—The versatile SHA

5. Out-of-Range (OTR) Indicator—The OTR output bit

6. Single Supply—The AD9244 uses a single 5 V power

CLK+

CLK–

VIN+

VIN–

DCS

of the power of currently available ADCs in existing high

speed solutions.

performance at input frequencies beyond the first Nyquist

zone. Sampling at 65 MSPS with an input frequency of

100 MHz, the AD9244 delivers 71 dB SNR and 86 dB SFDR.

migration from the 12-bit, 65 MSPS AD9226.

input can be configured for either single-ended or

differential inputs.

indicates when the input signal is beyond the AD9244’s

input range.

supply, simplifying system power supply design. It also

features a separate digital output driver supply to

accommodate 3.3 V and 5 V logic families.

AVDD

AGND

FUNCTIONAL BLOCK DIAGRAM

CML

SHA

TIMING

AD9244

VREF SENSE

PIPELINE ADC

REFT REFB

10-STAGE

REFERENCE

Figure 1.

GND

REF

DGND

OUTPUT

DRVDD

AD9244

www.analog.com

DFS

OTR

D13 TO D0

OEB

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