AD9957 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD9957
Manufacturer

ADI
ChipWorker Part#

CW480105568
Description

1GSPS Quadrature Digital Upconverter with 18Bit IQ Data Path and 14Bit DAC
Documentation

Datasheet

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AD9957 Specifications

Attribute	Attribute Value

Part Number	AD9957
Manufacturer	ADI
ChipWorker Part#	CW480105568
Documentation	Datasheet
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Product Lifecycle Status	Recommended for New Designs

Product Description

GENERAL DESCRIPTION
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 for 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.
FEATURES
1 GSPS internal clock speed (up to 400 MHz analog output)
Integrated 1 GSPS 14-bit DAC
250 MHz I/Q data throughput 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
APPLICATIONS
HFC data, telephony, and video modems
Wireless base station transmission
Broadband communications transmissions
Internet telephony

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Ordering Information

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- Anti-vibration foam
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- Electrical testing
- Surface testing

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