DAC5682 datasheet(45/49 Pages) TI

45 / 49 page

GC5330

GC5337

www.ti.com

SLWS226 B

– DECEMBER 2010 – REVISED JANUARY 2011

APPENDIX

Glossary of Terms

Third generation (refers to next-generation wideband cellular systems that use CDMA)

3GPP

Third Generation Partnership Project (W-CDMA specification, www.3gpp.org)

3GPP2

Third Generation Partnership Project 2 (cdma2000 specification, www.3gpp2.org)

ACLR

Adjacent-channel leakage ratio (measure of out-of-band energy from one CDMA carrier)

ACPR

Adjacent-channel power ratio

ADC

Analog-to-digital converter

BBclk

Clock-to-baseband section of GC533x

Bandwidth

CCDF

Complementary cumulative distribution function

CDMA

Code division multiple access (spread spectrum)

CEVM

Composite error vector magnitude

CFR

Crest factor reduction

DPD_CLK

Clock-to-DPD section of GC533x

CIC

Cascaded integrator comb (type of digital filter)

CMOS

Complementary metal-oxide semiconductor

DAC

Digital-to-analog converter

Decibels

dBm

Decibels relative to 1 mW (30 dBm = 1 W)

DDR

Dual data rate (ADC output format)

DPD

Digital pre-distortion

DSP

Digital signal processing or digital signal processor

DUC

Digital upconverter (usually provides the GC533x input)

EVM

Error vector magnitude

FIR

Finite impulse response (type of digital filter)

HP-DPD

High-performance DPD mode of the GC533x

HS-DPD

High-speed DPD mode of the GC533x

I/Q

In-phase and quadrature (signal representation)

Intermediate frequency

IIR

Infinite impulse response (type of digital filter)

JTAG

Joint Test Action Group (chip debug and test standard 1149.1)

Local oscillator

LSB

Least-significant bit

MSB

Most-significant bit

MSPS

Megasamples per second (1

× 106 samples/s)

Power amplifier

PAR

Peak-to-average ratio

PCDE

Peak code domain error

PDC

Peak detection and cancellation (stage)

PDF

Probability density function

Radio frequency

RMS

Root-mean-square (method to quantify error)

SDR

Single data rate (ADC output format)

SEM

Spectrum emission mask

SNR

Signal-to-noise ratio (usually measured in dB or dBm)

UMTS

Universal mobile telephone service

W-CDMA

Wideband code division multiple access (synonymous with 3GPP)

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