AD9742ARU

Number of Converters: 1
Mounting Type: Surface Mount
Number of Bits: 12
Voltage Supply Source: Analog and Digital
Packaging: Tube
Data Interface: Parallel
Operating Temperature: -40°C ~ 85°C
Number of Outputs and Type: 2 Current, Unipolar; 2 Current, Bipolar
Package / Case: 28-TSSOP (0.173", 4.40mm Width)
Supplier Device Package: 28-TSSOP
Manufacturer: Analog Devices Inc
Series: TxDAC®
Settling Time: 11ns
Power Dissipation (Max): 145mW
Sampling Rate (Per Second): 210M


Features:

High Performance Member of Pin-Compatible
TxDAC Product Family
Excellent Spurious-Free Dynamic Range Performance
SNR @ 5 MHz Output, 125 MSPS: 73 dB
Two's Complement or Straight Binary Data Format
Differential Current Outputs: 2 mA to 20 mA
Power Dissipation: 135 mW @ 3.3 V
Power-Down Mode: 15 mW @ 3.3 V
On-Chip 1.20 V Reference
CMOS-Compatible Digital Interface
Package: 28-Lead SOIC and TSSOP Packages
Edge-Triggered Latches


Application

Wideband Communication Transmit Channel:
Direct IF
Base Stations
Wireless Local Loop
Digital Radio Link
Direct Digital Synthesis (DDS)
Instrumentation


Specifications

 

 

Parameter	With Respect to	Min	Max	Units
AVDD	ACOM	0.3	+6.5	V
DVDD	DCOM	0.3	+6.5	V
ACOM	DCOM	0.3	+0.3	V
AVDD	DVDD	6.5	+6.5	V
CLOCK, SLEEP	DCOM	0.3	DVDD+0.3	V
Digital Inputs	DCOM	0.3	DVDD+0.3	V
IOUTA, IOUTB	ACOM	1.0	AVDD+0.3	V
ICOMP	ACOM	0.3	AVDD+0.3	V
REFIO, FSADJ	ACOM	0.3	AVDD+0.3	V
REFLO	ACOM	0.3	+0.3	V
Junction Temperature			+150	°C
Storage Temperature		65	+150	°C
Lead Temperature (10 sec)			+300	°C

Description

The AD9742 is a 12-bit resolution, wideband, third generation member of the TxDAC series of high-performance, low power CMOS digital-to-analog converters (DACs). The TxDAC family, consisting 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 AD9742 offers exceptional ac and dc performance while supporting update rates up to 165 MSPS. The AD9742's low power dissipation makes it well suited for portable and low power applications. Its power dissipation can be further reduced to a mere 60 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 15 mW. A segmented current source architecture is combined with a proprietary switching technique to reduce spurious components and enhance dynamic performance. Edgetriggered input latches and a 1.2 V temperature compensated band gap reference have been integrated to provide a complete monolithic DAC solution. The digital inputs support 3 V CMO logic families.

Parameters:

Technical/Catalog Information	AD9742ARU
Vendor	Analog Devices Inc
Category	Integrated Circuits (ICs)
Data Interface	Parallel
Number of Bits	12
Operating Temperature	-40°C ~ 85°C
Package / Case	28-TSSOP
Packaging	Tube
Voltage Supply Source	Analog and Digital
Settling Time	11ns
Drawing Number	*
RoHS Status	RoHS Non-Compliant
Other Names	AD9742ARU AD9742ARU