Datasheet

DAC2904
www.ti.com .............................................................................................................................................. SBAS198C –AUGUST 2001–REVISED OCTOBER 2009
ELECTRICAL CHARACTERISTICS
T
MIN
to T
MAX
, +V
A
= +5V, +V
D
= +3.3V, differential transformer coupled output, and 50Ω doubly-terminated, unless otherwise
noted. Independent Gain Mode.
DAC2904
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
RESOLUTION
Resolution 14 Bits
Output Update Rate (f
CLOCK
) 125 MSPS
STATIC ACCURACY
(1)
Differential Nonlinearity (DNL) T
A
= +25°C ±4.0 LSB
Integral Nonlinearity (INL) T
A
= +25°C ±5.0 LSB
DYNAMIC PERFORMANCE
Spurious-Free Dynamic Range (SFDR) To Nyquist
0dBFS Output 71 82 dBc
f
OUT
= 1MHz, f
CLOCK
= 50MSPS –6dBFS Output 77 dBc
–12dBFS Output 72 dBc
f
OUT
= 1MHz, f
CLOCK
= 26MSPS 82 dBc
f
OUT
= 2.18MHz, f
CLOCK
= 52MSPS 81 dBc
f
OUT
= 5.24MHz, f
CLOCK
= 52MSPS 81 dBc
f
OUT
= 10.4MHz, f
CLOCK
= 78MSPS 78 dBc
f
OUT
= 15.7MHz, f
CLOCK
= 78MSPS 72 dBc
f
OUT
= 5.04MHz, f
CLOCK
= 100MSPS 80 dBc
f
OUT
= 20.2MHz, f
CLOCK
= 100MSPS 69 dBc
f
OUT
= 20.1MHz, f
CLOCK
= 125MSPS 69 dBc
f
OUT
= 40.2MHz, f
CLOCK
= 125MSPS 64 dBc
Spurious-Free Dynamic Range within a
Window
f
OUT
= 1MHz, f
CLOCK
= 50MSPS 2MHz span 80 90 dBc
f
OUT
= 5.24MHz, f
CLOCK
= 52MSPS 10MHz span 88 dBc
f
OUT
= 5.26MHz, f
CLOCK
= 78MSPS 10MHz span 88 dBc
f
OUT
= 5.04MHz, f
CLOCK
= 125MSPS 10MHz span 88 dBc
Total Harmonic Distortion (THD) dBc
f
OUT
= 1MHz, f
CLOCK
= 50MSPS –79 –70 dBc
f
OUT
= 5.24MHz, f
CLOCK
= 52MSPS –77 dBc
f
OUT
= 5.26MHz, f
CLOCK
= 78MSPS –76 dBc
f
OUT
= 5.04MHz, f
CLOCK
= 125MSPS –75 dBc
Multitone Power Ratio Eight tone with 110kHz spacing
f
OUT
= 2.0MHz to 2.99MHz, f
CLOCK
=
0dBFS output 80 dBc
65MSPS
Signal-to-Noise Ratio (SNR)
f
OUT
= 5.02MHz, f
CLOCK
= 50MHz 0dBFS output 68 dBc
Signal-to-Noise and Distortion (SINAD)
f
OUT
= 5.02MHz, f
CLOCK
= 50MHz 0dBFS output 67 dBc
Channel Isolation
f
OUT
= 1MHz, f
CLOCK
= 52MSPS 85 dBc
f
OUT
= 20MHz, f
CLOCK
= 125MSPS 77 dBc
(1) At output l
OUT
, while driving a virtual ground.
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