AD9760ARURL

AD9760ARURL Datasheet


AD9760

Part Datasheet
AD9760ARURL AD9760ARURL AD9760ARURL (pdf)
Related Parts Information
AD9760ARU50RL AD9760ARU50RL AD9760ARU50RL
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10-Bit, 125 MSPS D/A Converter

AD9760

FEATURES Member of Pin-Compatible TxDAC Product Family 125 MSPS Update Rate 10-Bit Resolution Excellent Spurious Free Dynamic Range Performance SFDR to Nyquist 40 MHz Output 52 dBc Differential Current Outputs 2 mA to 20 mA Power Dissipation 175 mW 5 V to 45 mW 3 V Power-Down Mode 25 mW 5 V On-Chip V Reference Single +5 V or +3 V Supply Operation Packages 28-Lead SOIC and TSSOP Edge-Triggered Latches

APPLICATIONS Communication Transmit Channel:

Basestations Set Top Boxes Digital Radio Link Direct Digital Synthesis DDS Instrumentation

PRODUCT DESCRIPTION The AD9760 and AD9760-50 are the 10-bit resolution members of the TxDAC series of high performance, low power CMOS digital-to-analog converters DACs . The AD9760-50 is a lower performance option that is guaranteed and specified for 50 MSPS operation. The TxDAC family that consists of pin compatible 8-, 10-, 12- and 14-bit DACs is specifically optimized for the transmit signal path of communication systems. All of the devices share the same interface options, small outline package and pinout, thus providing an upward or downward component selection path based on performance, resolution and cost. Both the AD9760 and AD9760-50 offer exceptional ac and dc performance while supporting update rates up to 125 MSPS and 60 MSPS respectively.

The AD9760’s flexible single-supply operating range of V to V and low power dissipation are well suited for portable and low power applications. Its power dissipation can be further reduced to a mere 45 mW without a significant degradation in performance by lowering the full-scale current output. Also, a power-down mode reduces the standby power dissipation to approximately 25 mW.

The AD9760 is manufactured on an advanced CMOS process. A segmented current source architecture is combined with a proprietary switching technique to reduce spurious components and enhance dynamic performance. Edge-triggered input latches and a V temperature compensated bandgap reference have been integrated to provide a complete monolithic DAC solution. Flexible supply options support +3 V and +5 V CMOS logic families.

TxDAC is a registered trademark of Analog Devices, Inc.

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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

FUNCTIONAL BLOCK DIAGRAM

RSET +5V CLOCK

REFLO +1.20V REF

REFIO FS ADJ

COMP1 AVDD ACOM
50pF

AD9760

CURRENT SOURCE ARRAY

COMP2

DVDD DCOM

SEGMENTED SWITCHES

LSB SWITCHES

IOUTA IOUTB

CLOCK SLEEP

LATCHES

DIGITAL DATA INPUTS

The AD9760 is a current-output DAC with a nominal full-scale output current of 20 mA and > 100 output impedance. Differential current outputs are provided to support singleended or differential applications. Matching between the two current outputs ensures enhanced dynamic performance in a differential output configuration. The current outputs may be tied directly to an output resistor to provide two complementary, single-ended voltage outputs or fed directly into a transformer. The output voltage compliance range is V.

The on-chip reference and control amplifier are configured for maximum accuracy and flexibility. The AD9760 can be driven by the on-chip reference or by a variety of external reference voltages. The internal control amplifier that provides a wide >10:1 adjustment span allows the AD9760 full-scale current to be adjusted over a 2 mA to 20 mA range while maintaining excellent dynamic performance. Thus, the AD9760 may operate at reduced power levels or be adjusted over a 20 dB range to provide additional gain ranging capabilities.

The AD9760 is available in a 28-lead SOIC and TSSOP packages. It is specified for operation over the industrial temperature range.

PRODUCT HIGHLIGHTS The AD9760 is a member of the TxDAC product family that
provides an upward or downward component selection path based on resolution 8 to 14 bits , performance and cost.

Manufactured on a CMOS process, the AD9760 uses a proprietary switching technique that enhances dynamic performance beyond what was previously attainable by higher power/cost bipolar or BiCMOS devices.

On-chip, edge-triggered input CMOS latches interface readily to +3 V and +5 V CMOS logic families. The AD9760 can support update rates up to 125 MSPS.

A flexible single-supply operating range of V to V and a wide full-scale current adjustment span of 2 mA to 20 mA allow the AD9760 to operate at reduced power levels.

The current output s of the AD9760 can be easily configured for various single-ended or differential circuit topologies.

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

Tel 781/329-4700 World Wide Web Site:

Fax 781/326-8703

Analog Devices, Inc., 2000

AD9760* PRODUCT PAGE QUICK LINKS

Last Content Update 02/23/2017
ORDERING GUIDE

Model

Temperature Range

Package

Package

Descriptions Options

AD9760AR AD9760ARU AD9760AR50 AD9760ARU50 AD9760-EB
to +85°C to +85°C to +85°C to +85°C Evaluation Board
28-Lead 300 mil R-28 SOIC 28-Lead 170 mil RU-28 TSSOP 28-Lead 300 mil R-28 SOIC 28-Lead 170 mil RU-28 TSSOP

THERMAL CHARACTERISTICS

Thermal Resistance
28-Lead 300 mil mm SOIC = 71.4°C/W = 23°C/W
28-Lead 170 mil mm TSSOP = 97.9°C/W = 14.0°C/W

CAUTION ESD electrostatic discharge sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD9760 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE

PIN CONFIGURATION

MSB DB9 1
28 CLOCK

DB8 2
27 DVDD

DB7 3
26 DCOM

DB6 4
25 NC

DB5 5 AD9760 24 AVDD

DB4 6 TOP VIEW 23 COMP2

DB3 7 Not to Scale 22 IOUTA

DB2 8
21 IOUTB

DB1 9
20 ACOM

DB0 10
19 COMP1

NC 11
18 FS ADJ

NC 12
17 REFIO

NC 13
16 REFLO

NC 14
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Datasheet ID: AD9760ARURL 517787