AD9709
PRODUCTION8-Bit, 125 MSPS Dual TxDAC+ Digital-to-Analog Converter
- Part Models
- 2
- 1ku List Price
- Starting From $7.96
Part Details
- 8-bit dual transmit digital-to-analog converter (DAC)
- 125 MSPS update rate
- Excellent SFDR to Nyquist @ 5 MHz output: 66 dBc
- Excellent gain and offset matching: 0.1%
- Fully independent or single-resistor gain control
- Dual port or interleaved data
- On-chip 1.2 V reference
- See Data Sheet for Additional Information
The AD9709 is a dual-port, high speed, 2-channel, 8-bit CMOS DAC. It integrates two high quality 8-bit TxDAC+® cores, a voltage reference, and digital interface circuitry into a small 48-lead LQFP package. The AD9709 offers exceptional ac and dc performance while supporting update rates of up to 125 MSPS.
The AD9709 has been optimized for processing I and Q data in communications applications. The digital interface consists of two double-buffered latches as well as control logic. Separate write inputs allow data to be written to the two DAC ports independent of one another. Separate clocks control the update rate of the DACs
A mode control pin allows the AD9709 to interface to two separate data ports, or to a single interleaved high speed data port. In interleaving mode, the input data stream is demuxed into its original I and Q data and then latched. The I and Q data is then converted by the two DACs and updated at half the input data rate.
The GAINCTRL pin allows two modes for setting the full-scale current (IOUTFS) of the two DACs. IOUTFS for each DAC can be set independently using two external resistors, or IOUTFS for both DACs can be set by using a single external resistor. See the Gain Control Mode section for important date code information on this feature.
The DACs utilize a segmented current source architecture combined with a proprietary switching technique to reduce glitch energy and to maximize dynamic accuracy. Each DAC provides differential current output, thus supporting single-ended or differential applications. Both DACs can be simultaneously updated and provide a nominal full-scale current of 20 mA. The full-scale currents between each DAC are matched to within 0.1%.
The AD9709 is manufactured on an advanced low-cost CMOS process. It operates from a single supply of 3.3 V or 5 V and consumes 380 mW of power.
PRODUCT HIGHLIGHTS
- The AD9709 is a member of a pin-compatible family of dual TxDACs providing 8-, 10-, 12-, and 14-bit resolution.
- Dual 8-Bit, 125 MSPS DACs. A pair of high performance DACs optimized for low distortion performance provide for flexible transmission of I and Q information.
- Matching. Gain matching is typically 0.1% of full scale, and offset error is better than 0.02%.
- Low Power. Complete CMOS dual DAC function operates at 380 mW from a 3.3 V or 5 V single supply. The DAC full-scale current can be reduced for lower power operation, and a sleep mode is provided for low power idle periods.
- On-Chip Voltage Reference. The AD9709 includes a 1.20 V temperature-compensated band gap voltage reference.
- Dual 8-Bit Inputs. The AD9709 features a flexible dual-port interface, allowing dual or interleaved input data.
APPLICATIONS
Documentation
Data Sheet 1
User Guide 1
Application Note 4
Solutions Bulletin & Brochure 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD9709ASTZ | 48-Lead LQFP (7mm x 7mm) | ||
| AD9709ASTZRL | 48-Lead LQFP (7mm x 7mm) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Dec 7, 2016 - 16_0033 Assembly Relocation to Stats ChipPAC Jiangyin and Test Transfer to Stats ChipPAC Singapore of Select QFP Products |
||
| AD9709ASTZ | PRODUCTION | |
| AD9709ASTZRL | PRODUCTION | |
|
Jan 5, 2009 - 07_0077 Certification of STATSChipPAC Shanghai, China and AMKOR Philippines as additional sources for Assembly & Test of QFP Packages |
||
| AD9709ASTZ | PRODUCTION | |
| AD9709ASTZRL | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| I/Q Modulators 1 | ||
| AD8349 | PRODUCTION | 700 MHz TO 2.7 GHz Direct Up-Conversion Quadrature Modulator |
Tools & Simulations
AD9709 IBIS Models 2
Evaluation Kits
High Speed Controller Board
Resources
Software
AD9765/63/09 Evaluation Board