Datasheet

DAC5682Z
SLLS853E –AUGUST 2007–REVISED AUGUST 2012 www.ti.com
ELECTRICAL CHARACTERISTICS — AC SPECIFICATION
(1)
Over recommended operating free-air temperature range, AVDD, IOVDD = 3.3 V, CLKVDD, DVDD = 1.8 V, IOUT
FS
= 20 mA,
4:1 transformer output termination, 50Ω doubly terminated load (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
ANALOG OUTPUT
Maximum output update
f
CLK
1000 MSPS
rate
Output settling time to Transition: Code 0x0000 to 0xFFFF
t
s(DAC)
10.4 ns
0.1%
t
pd
Output propagation delay 2.5 ns
Output rise time 10% to
t
r(IOUT)
220 ps
90%
Output fall time 90% to
t
f(IOUT)
220 ps
10%
No interpolation, PLL Off 78
DAC
Digital latency x2 interpolation, PLL Off 163 clock
cycles
x4 interpolation, PLL Off 308
IOUT current settling to 1% of IOUT
FS
.
DAC wake-up time 80
Measured from SDENB; Register 0x06, toggle Bit 4 from 1 to 0.
Power-
μs
up time
IOUT current settling to 1% of IOUT
FS
.
DAC sleep time 80
Measured from SDENB; Register 0x06, toggle Bit 4 from 0 to 1.
AC PERFORMANCE
1X1, PLL off, CLKIN = 500 MHz, DACA on, IF = 5.1 MHz,
81
First Nyquist Zone < f
DATA
/2
Spurious free dynamic 2X2, PLL off, CLKIN = 1000 MHz, DACA and DACB on,
SFDR 80 dBc
range IF = 5.1 MHz, First Nyquist Zone < f
DATA
/2
2X2, PLL off, CLKIN = 1000 MHz, DACA and DACB on,
77
IF = 20.1 MHz, First Nyquist Zone < f
DATA
/2
2X2, PLL off, CLKIN = 500 MHZ, DACA and DACB on, Single
75
tone, 0 dBFS, IF = 20.1 MHz
2X2, PLL off, CLKIN = 1000 MHZ, DACA and DACB on, Single
70
tone, 0 dBFS, IF = 20.1 MHz
2X2, PLL off, CLKIN = 1000 MHZ, DACA and DACB on, Single
66
tone, 0 dBFS, IF = 70.1 MHz
SNR Signal-to-noise ratio dBc
2X4, PLL off, CLKIN = 1000 MHZ, DACA and DACB on, Single
60
tone, 0 dBFS, IF = 180 MHz
2X2 CMIX, PLL off, CLKIN = 1000 MHZ, DACA and DACB on,
60
Single tone, 0 dBFS, IF = 300.2 MHz
2X2, PLL off, CLKIN = 1000 MHZ, DACA and DACB on, Four
73
tone, each -12 dBFS, IF = 24.7, 24.9, 25.1 and 25.3 MHz
2X2, PLL off, CLKIN = 1000 MHZ, DACA and DACB on,
88
IF = 20.1 and 21.1 MHz
Third-order two-tone
2X2, PLL off, CLKIN = 1000 MHZ, DACA and DACB on,
IMD3 intermodulation 75 dBc
IF = 70.1 and 71.1 MHz
(each tone at –6 dBFS)
2X2 CMIX, PLL off, CLKIN = 1000 MHZ, DACA and DACB on,
67
IF = 150.1 and 151.1 MHz
Four-tone intermodulation 2X2 CMIX, PLL off, CLKIN = 1000 MHz, DACA and DACB on,
IMD 64 dBc
(each tone at –12 dBFS) fOUT = 298.4, 299.2, 300.8 and 301.6 MHz
(1) Measured single-ended into 50 Ω load.
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