Datasheet

AD9740
Rev. B | Page 5 of 32
DYNAMIC SPECIFICATIONS
T
MIN
to T
MAX
, AVDD = 3.3 V, DVDD = 3.3 V, CLKVDD = 3.3 V, I
OUTFS
= 20 mA, differential transformer coupled output, 50 Ω doubly
terminated, unless otherwise noted.
Table 2.
Parameter Min Typ Max Unit
DYNAMIC PERFORMANCE
Maximum Output Update Rate (f
CLOCK
) 210 MSPS
Output Settling Time (t
ST
) (to 0.1%)
1
11 ns
Output Propagation Delay (t
PD
) 1 ns
Glitch Impulse 5 pV-s
Output Rise Time (10% to 90%)
1
2.5 ns
Output Fall Time (10% to 90%)
1
2.5 ns
Output Noise (I
OUTFS
= 20 mA)
2
50 pA/√Hz
Output Noise (I
OUTFS
= 2 mA)
2
30 pA/√Hz
Noise Spectral Density
3
−143 dBm/Hz
AC LINEARITY
Spurious-Free Dynamic Range to Nyquist
f
CLOCK
= 25 MSPS; f
OUT
= 1.00 MHz
0 dBFS Output 71 79 dBc
−6 dBFS Output 75 dBc
−12 dBFS Output 67 dBc
−18 dBFS Output 61 dBc
f
CLOCK
= 65 MSPS; f
OUT
= 1.00 MHz 84 dBc
f
CLOCK
= 65 MSPS; f
OUT
= 2.51 MHz 80 dBc
f
CLOCK
= 65 MSPS; f
OUT
= 10 MHz 78 dBc
f
CLOCK
= 65 MSPS; f
OUT
= 15 MHz 76 dBc
f
CLOCK
= 65 MSPS; f
OUT
= 25 MHz 75 dBc
f
CLOCK
= 165 MSPS; f
OUT
= 21 MHz 70 dBc
f
CLOCK
= 165 MSPS; f
OUT
= 41 MHz 60 dBc
f
CLOCK
= 210 MSPS; f
OUT
= 40 MHz 67 dBc
f
CLOCK
= 210 MSPS; f
OUT
= 69 MHz 63 dBc
Spurious-Free Dynamic Range within a Window
f
CLOCK
= 25 MSPS; f
OUT
= 1.00 MHz; 2 MHz Span 80 dBc
f
CLOCK
= 50 MSPS; f
OUT
= 5.02 MHz; 2 MHz Span 90 dBc
f
CLOCK
= 65 MSPS; f
OUT
= 5.03 MHz; 2.5 MHz Span 90 dBc
f
CLOCK
= 125 MSPS; f
OUT
= 5.04 MHz; 4 MHz Span 90 dBc
Total Harmonic Distortion
f
CLOCK
= 25 MSPS; f
OUT
= 1.00 MHz −79 −71 dBc
f
CLOCK
= 50 MSPS; f
OUT
= 2.00 MHz −77 dBc
f
CLOCK
= 65 MSPS; f
OUT
= 2.00 MHz −77 dBc
f
CLOCK
= 125 MSPS; f
OUT
= 2.00 MHz −77 dBc
Signal-to-Noise Ratio
f
CLOCK
= 65 MSPS; f
OUT
= 5 MHz; I
OUTFS
= 20 mA 68 dB
f
CLOCK
= 65 MSPS; f
OUT
= 5 MHz; I
OUTFS
= 5 mA 64 dB
f
CLOCK
= 125 MSPS; f
OUT
= 5 MHz; I
OUTFS
= 20 mA 64 dB
f
CLOCK
= 125 MSPS; f
OUT
= 5 MHz; I
OUTFS
= 5 mA 62 dB
f
CLOCK
= 165 MSPS; f
OUT
= 5 MHz; I
OUTFS
= 20 mA 64 dB
f
CLOCK
= 165 MSPS; f
OUT
= 5 MHz; I
OUTFS
= 5 mA 62 dB
f
CLOCK
= 210 MSPS; f
OUT
= 5 MHz; I
OUTFS
= 20 mA 63 dB
f
CLOCK
= 210 MSPS; f
OUT
= 5 MHz; I
OUTFS
= 5 mA 60 dB