Datasheet

ELECTRICAL CHARACTERISTICS (AC SPECIFICATIONS)
(1)
DAC5686
www.ti.com ............................................................................................................................................................ SLWS147F – APRIL 2003 – REVISED JUNE 2009
over operating free-air temperature range, AVDD = 3.3 V, CLKVDD = 3.3 V, PLLVDD = 0 V, IOVDD = 3.3 V, DVDD = 1.8 V,
IOUT
FS
= 20 mA, external clock mode, differential transformer-coupled output, 50- Ω doubly terminated load (unless otherwise
noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
Analog Output
f
CLK
Maximum output update rate 500 MSPS
t
s(DAC)
Output settling time to 0.1% Mid-scale transition 12 ns
t
pd
Output propagation delay 2.5 ns
t
r(IOUT)
(2)
Output rise time 10% to 90% 2.5 ns
t
f(IOUT)
(2)
Output fall time 90% to 10% 2.5 ns
AC Performance — 1:1 Impedance-Ratio Transformer
First Nyquist zone < f
DATA
/2
(3)
, 4 × interpolation, dual DAC
mode, f
DATA
= 52 MSPS, f
OUT
= 14 MHz, T
A
= 25C, 89
IOVDD = 1.8 V
First Nyquist zone < f
DATA
/2
(3)
, 4 × interpolation, dual DAC
mode, f
DATA
= 160 MSPS, f
OUT
= 20 MHz, full bypass,
68 79
T
A
= T
MIN
to T
MAX
and PLLVDD = 3.3 V for MIN, 25C for TYP,
IOVDD = 1.8 V for TYP
SFDR Spurious free dynamic range dBc
First Nyquist zone < f
DATA
/2
(3)
, 2 × interpolation, dual DAC
mode, f
DATA
= 160 MSPS, f
OUT
= 41 MHz, T
A
= 25C, 72
IOVDD = 1.8 V
First Nyquist zone < f
DATA
/2
(3)
, 2 × interpolation, dual DAC
mode, f
DATA
= 160 MSPS, f
OUT
= 61 MHz, T
A
= 25C, 68
IOVDD = 1.8 V
First Nyquist zone < f
DATA
/2, f
DATA
= 100 MSPS,
80
f
OUT
= 5 MHz, IOVDD = 1.8 V, f
DAC
= 400 MSPS
SNR Signal-to-noise ratio dB
First Nyquist zone < f
DATA
/2, f
DATA
= 78 MSPS,
f
OUT
= 15.6 MHz, 15.8 MHz, 16.2 MHz, 16.4 MHz, 72
IOVDD = 1.8 V, f
DAC
= 314 MSPS
Single carrier W-CDMA with 3.84-MHz BW, 5-MHz spacing,
centered at IF, TESTMODEL 1, 10 ms, f
DATA
= 122.88 MSPS,
72
baseband, dual DAC, 2 × interpolation,
f
OUT
= 245 MSPS
Single carrier W-CDMA with 3.84-MHz BW, 5-MHz spacing,
centered at IF, TESTMODEL 1, 10 ms, f
DATA
= 76.8 MSPS, IF
77
= 19.2 MHz, dual DAC, 2 × interpolation,
f
OUT
= 153.6 MSPS
Single carrier W-CDMA with 3.84-MHz BW, 5-MHz spacing,
centered at IF, TESTMODEL 1, 10 ms, f
DATA
= 122.88 MSPS, 76
IF = 30.72 MHz, dual DAC, 2 × interpolation, f
DAC
= 245 MSPS
Adjacent-channel power
ACLR dB
ratio
Single carrier W-CDMA with 3.84-MHz BW, 5-MHz spacing,
centered at IF, TESTMODEL 1, 10 ms, f
DATA
= 61.44 MSPS,
73
IF = 61.44 MHz, quad mode, f
DAC
/4, 4 ×
interpolation, f
DAC
= 245 MSPS
Two-carrier W-CDMA with 3.84-MHz BW, 5-MHz spacing,
centered at IF, TESTMODEL 1, 10 ms, f
DATA
= 122.88 MSPS, 72
IF = 30.72 MHz, dual DAC, 2 × interpolation, f
DAC
= 245 MSPS
Four-carrier W-CDMA with 3.84-MHz BW, 5-MHz spacing,
centered at IF, TESTMODEL 1, 10 ms, f
DATA
= 121.88 MSPS,
64
complex IF - 30.72 MHz, quad mode, f
DAC
/4, 4 × interpolation,
IF = 92.16 MHz
(1) Specifications subject to change without notice
(2) Measured single-ended into 50- Ω load
(3) See the Non-Harmonic Clock-Related Spurious Signals section for information on spurious products out of band ( > f
DATA
/2).
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