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 45mW @ 3 V
Power-Down Mode: 25 mW @ 5 V
On-Chip 1.20 V Reference
Single +5 V or +3 V Supply Operation
Packages: 28-Lead SOIC and TSSOP
Edge-Triggered Latches




Application

Communication Transmit Channel:
Basestations
Set Top Boxes
Digital Radio Link
Direct Digital Synthesis (DDS)
Instrumentation




Pinout






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 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 2.7 V to 5.5 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 1.2 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.