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ManualsBrandsMAXIM INTEGRATED ManualsData collecting ICsData acquisition IC - DA converter (DAC) QFN 68 Exposed Pad
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MAX5894
14-Bit, 500Msps, Interpolating and Modulating
Dual DAC with CMOS Inputs
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9
TWO-CARRIER WCDMA ACLR SPECTRAL PLOT
f
DATA
= 61.44Mwps, 8x INTERPOLATION
MAX5894 toc19
f
CENTER
= 61.44MHz
SPAN = 30.5MHz
ACLR2 = 75dB
OUTPUT POWER (dBm)
ACLR1 = 74dB
ACLR1 = 73dB
ACLR2 = 74dB
CARRIER = -14dBm
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
WCDMA ACLR SPECTRAL PLOT
f
DATA
= 122.88Mwps, 4x INTERPOLATION
MAX5894 toc20
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
f
CENTER
= 122.88MHz
SPAN = 25.5MHz
ACLR2 = 70dB
OUTPUT POWER (dBm)
ACLR1 = 67dB
ACLR1 = 67dB
ACLR2 = 69dB
CARRIER = -14dBm
TWO-CARRIER WCDMA ACLR SPECTRAL PLOT
f
DATA
= 122.88Mwps, 4x INTERPOLATION
MAX5894 toc21
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
f
CENTER
= 122.88MHz
SPAN = 30.5MHz
ACLR2 = 68dB
OUTPUT POWER (dBm)
ACLR1 = 65dB
ACLR1 = 65dB
ACLR2 = 67dB
CARRIER = -17dBm
Typical Operating Characteristics (continued)
(DV
DD1.8
= AV
DD1.8
= 1.8V, AV
CLK
= AV
DD3.3
= DV
DD3.3
= 3.3V, modulator off, 2x interpolation, output is transformer-coupled to
50Ω load, T
A
= +25°C, unless otherwise noted.)
WCDMA ACLR vs. OUTPUT FREQUENCY
f
DATA
= 122.88Mwps, 4x INTERPOLATION
MAX5894 toc16
f
CENTER
(MHz)
ACLR (dB)
1208040
50
60
70
80
90
100
40
0 160
TWO-CARRIER
ADJACENT CHANNEL
ONE-CARRIER
ADJACENT CHANNEL
TWO-CARRIER
ALTERNATE CHANNEL
ONE-CARRIER
ALTERNATE CHANNEL
WCDMA ACLR vs. OUTPUT FREQUENCY
f
DATA
= 76.8Mwps, 4x INTERPOLATION
MAX5894 toc17
f
CENTER
(MHz)
ACLR (dB)
8040
50
60
70
80
90
100
40
0
ONE-CARRIER
ALTERNATE CHANNEL
ONE-CARRIER
ADJACENT CHANNEL
TWO-CARRIER
ALTERNATE CHANNEL
TWO-CARRIER
ADJACENT
CHANNEL