DAC5687IPZP datasheet(8/79 Pages) TI

8 / 79 page

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ELECTRICAL CHARACTERISTICS (AC SPECIFICATIONS)

(1)

DAC5687

SLWS164E – FEBRUARY 2005 – REVISED SEPTEMBER 2006

over recommended operating free-air temperature range, AVDD = 3.3 V, CLKVDD = 3.3 V, PLLVDD = 0 V (= 3.3 V for PLL

clock mode), IOVDD = 3.3 V, DVDD = 1.8 V, IOUTFS = 19.2 mA, external clock mode, 4:1 transformer output termination,

50-

Ω doubly terminated load (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ANALOG OUTPUT

fCLK

Maximum output update rate

500

MSPS

ts(DAC)

Output settling time to 0.1%

Transition: Code 0x0000 to 0xFFFF

10.4

tpd

Output propagation delay

tr(IOUT)

Output rise time 10% to 90%

tf(IOUT)

Output fall time 90% to 10%

AC PERFORMANCE

X2, PLL off, CLK2 = 250 MHz, DAC A and DAC B on,

IF = 5.1 MHz, first Nyquist zone < fDATA/2

X4, PLL off, CLK2 = 500 MHz, DAC A and DAC B on,

SFDR

Spurious free dynamic range(2)

IF = 5.1 MHz, first Nyquist zone < fDATA/2

dBc

X4, CLK2 = 500 MHz, DAC A and DAC B on,

IF = 20.1 MHz, PLL on for MIN, PLL off for TYP,

68(3)

first Nyquist zone < fDATA/2

X4, PLL off, CLK2 = 500 MSPS, DAC A and DAC B on,

single tone, 0 dBFS, IF = 20.1 MHz

X4 CMIX, PLL off, CLK2 = 500 MSPS, DAC A and DAC B

on, IF = 70.1 MHz

X4 CMIX, PLL off, CLK2 = 500 MSPS, DAC A and DAC B

SNR

Signal-to-noise ratio

on, single tone, 0 dBFS, IF = 150.1 MHz

dBc

X4 FMIX CMIX, PLL off, CLK2 = 500 MSPS, DAC A and

DAC B on, single tone, 0 dBFS, IF = 180.1 MHz

X4, PLL off, CLK2 = 500 MSPS, DAC A and DAC B on,

four tones, each –12 dBFS, IF = 24.7, 24.9, 25.1, 25.3

MHz

X4, PLL off, CLK2 = 500 MSPS, DAC A and DAC B on,

IF = 20.1 and 21.1 MHz

X4 CMIX, PLL off, CLK2 = 500 MSPS, DAC A and DAC B

Third-order two-tone

on, IF = 70.1 and 71.1 MHz

IMD3

intermodulation (each tone at

dBc

X4 CMIX, PLL off, CLK2 = 500 MSPS, DAC A and DAC B

–6 dBFS)

on, IF= 150.1 and 151.1 MHz

X4 FMIX CMIX, PLL off, CLK2 = 500 MSPS, DAC A and

DAC B on, IF = 180.1 and 181.1 MHz

Four-tone intermodulation to

X4 CMIX, CLK2 = 500 MHz, fOUT = 149.2, 149.6, 150.4,

IMD

Nyquist (each tone at –12

dBc

and 150.8 MHz

dBFS)

(1)

Measured single ended into 50-

Ω load.

(2)

See the Non-Harmonic Clock Related Spurious Signals section for information on spurious products out of band (< fDATA/2).

(3)

1:1 transformer output termination.

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