AD9784 Datasheet, PDF (5/52 Pages) Analog Devices – 14-Bit, 200 MSPS/500 MSPS TxDAC+ with 2×/4×/8× Interpolation and Signal Processing

Preliminary Technical Data
AD9784
DYNAMIC SPECIFICATIONS
Table 2. TMIN to TMAX, AVDD1, AVDD2 = 3.3 V, ACVDD, ADVDD, CLKVDD, DVDD, DRVDD = 2.5 V, IOUTFS = 20 mA,
Differential Transformer Coupled Output, 50 Ω Doubly Terminated, unless otherwise noted
Parameter
Min Typ Max
DYNAMIC PERFORMANCE
Maximum DAC Output Update Rate (fDAC)
500
Output Settling Time (tST) (to 0.025%)
Output Propogation Delay⁵ (tPD)
Output Rise Time (10%–90%)⁶
Output Fall Time (90%–10%)⁶
Output Noise (IOUTFS = 20 mA)
AC LINEARITY—BASEBAND MODE
Spurious-Free Dynamic Range (SFDR) to Nyquist (fOUT = 0 dBFS)
fDATA = 160 MSPS; fOUT= 1 MHz
95
fDATA = MSPS; fOUT = MHz
fDATA = MSPS; fOUT = MHz
fDATA = MSPS; fOUT = MHz
fDATA = MSPS; fOUT = MHz
fDATA = MSPS; fOUT = MHz
Two-Tone Intermodulation (IMD) to Nyquist (fOUT1 = fOUT2 = –6 dBFS)
fDATA = 160 MSPS; fOUT1 = 25 MHz; fOUT2 = 31 MHz
80
fDATA = MSPS; fOUT1 = MHz; fOUT2 = MHz
fDATA = MSPS; fOUT1 = MHz; fOUT2 = MHz
fDATA = MSPS; fOUT1 = MHz; fOUT2 = MHz
fDATA = MSPS; fOUT1 = MHz; fOUT2 = MHz
fDATA = MSPS; fOUT1 = MHz; fOUT2 = MHz
Total Harmonic Distortion (THD)
fDATA = MSPS; fOUT = MHz; 0 dBFS
fDATA = MSPS; fOUT = MHz; 0 dBFS
Signal-to-Noise Ratio (SNR)
fDATA = MSPS; fOUT = MHz; 0 dBFS
fDATA = MSPS; fOUT = MHz; 0 dBFS
Adjacent Channel Power Ratio (ACPR)
WCDMA with MHz BW, MHz Channel Spacing
IF = 16 MHz, fDATA = 65.536 MSPS
IF = 32 MHz, fDATA = 131.072 MSPS
Four-Tone Intermodulation
MHz, MHz, MHz and MHz at –12 dBFS (fDATA = MSPS, Missing Center)
AC LINEARITY—IF MODE
Four-Tone Intermodulation at IF = MHz
MHz, MHz, MHz and MHz at dBFS
fDATA = MSPS, fDAC = MHz
Unit
MSPS
ns
ns
ns
ns
pA√Hz
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dBc
dB
dB
dBFS
dBFS
dBc
dBc
dBFS
dBFS
5 _{Propagation delay is delay from CLK input to DAC update.}
6 _{Measured single-ended into 50 Ω load.}
Rev. PrC | Page 5 of 52