DAC5674IPHPG4【PDF 34/39 页】IC DAC 14BIT 400MSPS 48-HTQFP

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Sheet目录1992

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DAC5674

SLWS148A SEPTEMBER 2003 REVISED OCTOBER 2005

www.ti.com

DC ELECTRICAL CHARACTERISTICS (CONTINUED)

over recommended operating free-air temperature range, AVDD = 3.3 V, CLKVDD = 3.3 V, PLLVDD = 3.3 V, IOVDD = 3.3 V, DVDD = 1.8 V,

IOUTFS = 20 mA, Rset = 1.91 k, internal reference, unless otherwise noted

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

POWER SUPPLY (CONTINUED)

IDVDD

Digital supply current

AVDD = 3.3 V, DVDD = 1.8 V, 4

× interpolation,

PLL on, 9-MHz IF, 400 MSPS

107

140

ISLEEP3.3 Sleep mode

Sleep mode, supply current 3.3 V

ISLEEP1.8 Sleep mode

Sleep mode, supply current 1.8 V

0.5

IPLLVDD

PLL supply current(1)

Fdata = 100 MSPS, Fupdate = 400 MSPS,

DIV[1:0] = ’00’, AVDD = 3.3 V, DVDD = 1.8 V, 4

interpolation, PLL on, 9-MHz IF, 400 MSPS

IIOVDD

Buffer supply current

AVDD = 3.3 V, DVDD = 1.8 V, 4

× interpolation,

PLL on, 9-MHz IF, 400 MSPS

ICLKVDD

Clock supply current(1)

AVDD = 3.3 V, DVDD = 1.8 V, 4

× interpolation,

PLL on, 9-MHz IF, 400 MSPS

Power dissipation

AVDD = 3.3 V, DVDD = 1.8 V, 4

× interpolation,

PLL on, 9-MHz IF, 400 MSPS

435

550

APSRR

Power supply rejection ratio

0.2

%FSR/V

DPSRR

0.2

%FSR/V

Operating range

°C

Specifications subject to change without notice.

(1) PLL enabled

AC ELECTRICAL CHARACTERISTICS

over recommended operating free-air temperature range, AVDD = 3.3 V, CLKVDD = 3.3 V, PLLVDD = 3.3 V, IOVDD = 1.8 V, DVDD = 1.8 V,

IOUTFS = 20 mA, differential transformer coupled output, 50-

doubly terminated load (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ANALOG OUTPUT

fCLK

Maximum output update rate

400

MSPS

ts(DAC)

Output settling time to 0.1%

Midscale transition

tr(IOUT)

Output rise time 10% to 90%(1)

1.4

tf(IOUT)

Output fall time 90% to 10%(1)

1.5

Output noise

IOUTFS = 20 mA

pA/

√HZ

Output noise

IOUTFS = 2 mA

pA/

√HZ

AC LINEARITY 1:1 IMPEDANCE RATIO TRANSFORMER (ALL AC MEASUREMENTS PLLVDD = 0 V)

Spurious free dynamic range (First

fDATA = 52 MSPS, fOUT = 14 MHz, TA = 25_C

SFDR

Spurious free dynamic range (First

Nyquist zone < fDATA/2) X4 LL-mode

fDATA = 100 MSPS, fOUT = 21 MHz, TMIN to TMAX

dBc

SFDR

Nyquist zone < fDATA/2) X4 LL-mode

fDATA = 100 MSPS, fOUT = 41 MHz, TMIN to TMAX

dBc

SNR

Signal-to-noise ratio (First Nyquist

fDATA = 78 MSPS, fOUT = 20 MHz, TMIN to TMAX

SNR

Signal-to-noise ratio (First Nyquist

zone < fDATA/2) X4 LL-mode

fDATA = 100 MSPS, fOUT = 20 MHz, TMIN to TMAX

ACPR

Adjacent channel power ratio

W-CDMA signal with 3.84-MHz BW

fDATA = 61.44 MSPS, IF = 15.360 MHz, X4 LL-mode

ACPR

W-CDMA signal with 3.84-MHz BW

5-MHz channel spacing

fDATA = 122.88 MSPS, IF = 30.72 MHz, X2 L-mode

IMD3

Third-order, two-tone intermodulation

fDATA = 61.44 MSPS, fOUT = 45.4 and 46.4 MHz,

X4 HL-mode

dBc

IMD3

Third-order, two-tone intermodulation

(each tone at 6 dBFS)

fDATA = 61.44 MSPS, fOUT = 15.1 and 16.1 MHz,

X4 LL-mode

dBc

IMD

Four-tone Intermodulation to Nyquist

fDATA = 78 MSPS fOUT = 15.6 MHz, 15.8 MHz,

16.2 MHz, 16.4 MHz, X4 LL-mode

dBc

IMD

Four-tone Intermodulation to Nyquist

(each tone at –12 dBFS)

fDATA = 52 MSPS fOUT = 68.8 MHz, 69.6 MHz,

71.2 MHz, 72 MHz, X4 HH-mode

dBc

(1) Measured single-ended into 50- load.

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