AD9957
RECOMMENDED FOR NEW DESIGNS1 GSPS Quadrature Digital Upconverter with 18-Bit I/Q Data Path and 14-Bit DAC
- Part Models
- 2
- 1ku List Price
- Starting From $26.93
Part Details
- 1 GSPS internal clock speed (up to 400 MHz analog output)
- Integrated 1 GSPS 14-bit DAC
- 250 MSPS input data rate
- Phase noise ≤ −125 dBc/Hz (400 MHz carrier @ 1 kHz offset)
- Excellent dynamic performance >80 dB narrow-band SFDR
- 8 programmable profiles for shift keying
- Sin(x)/(x) correction (inverse sinc filter)
- Reference clock multiplier
- Internal oscillator for a single crystal operation
- Software and hardware controlled power-down
- Integrated RAM
- Phase modulation capability
- Multichip synchronization
- Easy interface to Blackfin SPORT
- Interpolation factors from 4× to 252×
- Interpolation DAC mode
- Gain control DAC
- Internal divider allows references up to 2 GHz
- 1.8 V and 3.3 V power supplies
- 100-lead TQFP_EP package
The AD9957 functions as a universal I/Q modulator and agile upconverter for communications systems where cost, size, power consumption, and dynamic performance are critical. The AD9957 integrates a high speed, direct digital synthesizer (DDS), a high performance, high speed, 14-bit digital-to-analog converter (DAC), clock multiplier circuitry, digital filters, and other DSP functions onto a single chip. It provides baseband upconversion for data transmission in a wired or wireless communications system.
The AD9957 is the third offering in a family of quadrature digital upconverters (QDUCs) that includes the AD9857 and AD9856. It offers performance gains in operating speed, power consumption, and spectral performance. Unlike its predecessors, it supports a 16-bit serial input mode for I/Q baseband data. The device can alternatively be programmed to operate either as a single tone, sinusoidal source or as an interpolating DAC.
The reference clock input circuitry includes a crystal oscillator, a high speed, divide-by-two input, and a low noise PLL for multiplication of the reference clock frequency.
The user interface to the control functions includes a serial port easily configured to interface to the SPORT of the Blackfin® DSP and profile pins to enable fast and easy shift keying of any signal parameter (phase, frequency, or amplitude).
Applications
- HFC data, telephony, and video modems
- Wireless base station transmissions
- Broadband communications transmissions
- Internet telephony
Documentation
Data Sheet 1
User Guide 1
Application Note 3
Technical Articles 1
Evaluation Design File 1
Frequently Asked Question 1
Webcast 2
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 |
|---|---|---|---|
| AD9957BSVZ | 100-Lead TQFP w/ EP | ||
| AD9957BSVZ-REEL | 100-Lead TQFP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Mar 15, 2016 - 14_0258 Assembly Transfer of Selected 14x14 LQFP, 14x14 LQFP_EP and 7x7,10x10,12x12,14x14 TQFP_EP Products to Amkor Philippines |
||
| AD9957BSVZ | PRODUCTION | |
| AD9957BSVZ-REEL | PRODUCTION | |
|
Mar 24, 2011 - 11_0065 AD9957 die change |
||
| AD9957BSVZ | PRODUCTION | |
| AD9957BSVZ-REEL | PRODUCTION | |
|
Jun 16, 2009 - 09_0027 Conversion to Laser Mark for the LQFP Packages (Single Grades) |
||
| AD9957BSVZ | PRODUCTION | |
| AD9957BSVZ-REEL | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
AD9957 IBIS Model 1
Evaluation Kits
AD9957 Evaluation Board