AD9764ARURL

AD9764ARURL Datasheet

AD9764

Part	Datasheet
AD9764ARURL	AD9764ARURL (pdf)

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14-Bit, 125 MSPS D/A Converter AD9764 FEATURES Member of Pin-Compatible TxDAC Product Family 125 MSPS Update Rate 14-Bit Resolution Excellent SFDR and IMD Differential Current Outputs 2 mA to 20 mA Power Dissipation 190 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 ADSL/HFC Modems Instrumentation PRODUCT DESCRIPTION The AD9764 is the 14-bit resolution member of the TxDAC series of high performance, low power CMOS digital-to-analog converters DACs . The TxDAC family, which 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, providing an upward or downward component selection path based on performance, resolution and cost. The AD9764 offers exceptional ac and dc performance while supporting update rates up to 125 MSPS. The AD9764’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 with a slight 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 AD9764 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. The AD9764 is a current-output DAC with a nominal full-scale output current of 20 mA and > 100 output impedance. 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 CLOCK REFLO +1.20V REF REFIO FS ADJ COMP1 AVDD ACOM 50pF AD9764 CURRENT SOURCE ARRAY COMP2 DVDD DCOM SEGMENTED SWITCHES LSB SWITCHES IOUTA IOUTB CLOCK SLEEP LATCHES DIGITAL DATA INPUTS 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 AD9764 can be driven by the on-chip reference or by a variety of external reference voltages. The internal control amplifier, which provides a wide >10:1 adjustment span, allows the AD9764 full-scale current to be adjusted over a 2 mA to 20 mA range while maintaining excellent dynamic performance. Thus, the AD9764 may operate at reduced power levels or be adjusted over a 20 dB range to provide additional gain ranging capabilities. The AD9764 is available in 28-lead SOIC and TSSOP packages. It is specified for operation over the industrial temperature range. PRODUCT HIGHLIGHTS The AD9764 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 AD9764 uses a proprietary switching technique that enhances dynamic performance beyond that previously attainable by higher power/cost bipolar or BiCMOS devices. On-chip, edge-triggered input CMOS latches readily interface to +3 V and +5 V CMOS logic families. The AD9764 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, allows the AD9764 to operate at reduced power levels. The current output s of the AD9764 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., 1999-2016 ORDERING GUIDE AVDD ACOM DVDD DCOM ACOM DCOM AVDD DVDD CLOCK, SLEEP DCOM DVDD + V Digital Inputs DCOM DVDD + V IOUTA, IOUTB COMP1, COMP2 ACOM AVDD + V AVDD + V REFIO, FSADJ ACOM AVDD + V REFLO ACOM Junction Temperature Storage Temperature Lead Temperature 10 sec +150 +150 +300 °C 1 RW = Small Outline IC, RU = TSSOP. 2 Z = RoHS Compliant Part. *Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliability. THERMAL CHARACTERISTICS Thermal Resistance 28-Lead 300 mil SOIC = C/W = 23° C/W 28-Lead TSSOP CAUTION = C/W = C/W 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. WARNING! Although the AD9764 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. ESD SENSITIVE DEVICE PIN CONFIGURATION MSB DB13 1

PDF Datasheet Preview

14-Bit, 125 MSPS D/A Converter

AD9764

FEATURES Member of Pin-Compatible TxDAC Product Family 125 MSPS Update Rate 14-Bit Resolution Excellent SFDR and IMD Differential Current Outputs 2 mA to 20 mA Power Dissipation 190 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 ADSL/HFC Modems Instrumentation

PRODUCT DESCRIPTION The AD9764 is the 14-bit resolution member of the TxDAC series of high performance, low power CMOS digital-to-analog converters DACs . The TxDAC family, which 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, providing an upward or downward component selection path based on performance, resolution and cost. The AD9764 offers exceptional ac and dc performance while supporting update rates up to 125 MSPS.

The AD9764’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 with a slight 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 AD9764 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.

The AD9764 is a current-output DAC with a nominal full-scale output current of 20 mA and > 100 output impedance.

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

CLOCK

REFLO +1.20V REF

REFIO FS ADJ

COMP1 AVDD ACOM
50pF

AD9764

CURRENT SOURCE ARRAY

COMP2

DVDD DCOM

SEGMENTED SWITCHES

LSB SWITCHES

IOUTA IOUTB

CLOCK SLEEP

LATCHES

DIGITAL DATA INPUTS

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 AD9764 can be driven by the on-chip reference or by a variety of external reference voltages. The internal control amplifier, which provides a wide >10:1 adjustment span, allows the AD9764 full-scale current to be adjusted over a 2 mA to 20 mA range while maintaining excellent dynamic performance. Thus, the AD9764 may operate at reduced power levels or be adjusted over a 20 dB range to provide additional gain ranging capabilities.

The AD9764 is available in 28-lead SOIC and TSSOP packages. It is specified for operation over the industrial temperature range.

PRODUCT HIGHLIGHTS The AD9764 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 AD9764 uses a proprietary switching technique that enhances dynamic performance beyond that previously attainable by higher power/cost bipolar or BiCMOS devices.

On-chip, edge-triggered input CMOS latches readily interface to +3 V and +5 V CMOS logic families. The AD9764 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, allows the AD9764 to operate at reduced power levels.

The current output s of the AD9764 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., 1999-2016
ORDERING GUIDE

AVDD

ACOM

DVDD

DCOM

ACOM

DCOM

AVDD

DVDD

CLOCK, SLEEP

DCOM

DVDD + V

Digital Inputs

DCOM

DVDD + V

IOUTA, IOUTB COMP1, COMP2

ACOM

AVDD + V AVDD + V

REFIO, FSADJ

ACOM

AVDD + V

REFLO

ACOM

Junction Temperature Storage Temperature Lead Temperature
10 sec
+150 +150
+300
°C 1 RW = Small Outline IC, RU = TSSOP.
2 Z = RoHS Compliant Part.
*Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliability.

THERMAL CHARACTERISTICS Thermal Resistance 28-Lead 300 mil SOIC
= C/W = 23° C/W 28-Lead TSSOP

CAUTION
= C/W = C/W

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.

WARNING!

Although the AD9764 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.

ESD SENSITIVE DEVICE

PIN CONFIGURATION

MSB DB13 1

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Datasheet ID: AD9764ARURL 517789