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,

IOUTFS = 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

fCLK

Maximum output update rate

500

MSPS

ts(DAC)

Output settling time to 0.1%

Mid-scale transition

12

ns

tpd

Output propagation delay

2.5

ns

tr(IOUT)

(2)

Output rise time 10% to 90%

2.5

ns

tf(IOUT)

(2)

Output fall time 90% to 10%

2.5

ns

AC Performance—1:1 Impedance-Ratio Transformer

First Nyquist zone < fDATA/2

(3), 4× interpolation, dual DAC

mode, fDATA = 52 MSPS, fOUT = 14 MHz, TA = 25C,

89

IOVDD = 1.8 V

First Nyquist zone < fDATA/2

(3), 4× interpolation, dual DAC

mode, fDATA = 160 MSPS, fOUT = 20 MHz, full bypass,

68

79

TA = TMIN to TMAX 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 < fDATA/2

(3), 2× interpolation, dual DAC

mode, fDATA = 160 MSPS, fOUT = 41 MHz, TA = 25C,

72

IOVDD = 1.8 V

First Nyquist zone < fDATA/2

(3), 2× interpolation, dual DAC

mode, fDATA = 160 MSPS, fOUT = 61 MHz, TA = 25C,

68

IOVDD = 1.8 V

First Nyquist zone < fDATA/2, fDATA = 100 MSPS,

80

fOUT = 5 MHz, IOVDD = 1.8 V, fDAC = 400 MSPS

SNR

Signal-to-noise ratio

dB

First Nyquist zone < fDATA/2, fDATA = 78 MSPS,

fOUT = 15.6 MHz, 15.8 MHz, 16.2 MHz, 16.4 MHz,

72

IOVDD = 1.8 V, fDAC = 314 MSPS

Single carrier W-CDMA with 3.84-MHz BW, 5-MHz spacing,

centered at IF, TESTMODEL 1, 10 ms, fDATA = 122.88 MSPS,

72

baseband, dual DAC, 2× interpolation,

fOUT = 245 MSPS

Single carrier W-CDMA with 3.84-MHz BW, 5-MHz spacing,

centered at IF, TESTMODEL 1, 10 ms, fDATA = 76.8 MSPS, IF

77

= 19.2 MHz, dual DAC, 2× interpolation,

fOUT = 153.6 MSPS

Single carrier W-CDMA with 3.84-MHz BW, 5-MHz spacing,

centered at IF, TESTMODEL 1, 10 ms, fDATA = 122.88 MSPS,

76

IF = 30.72 MHz, dual DAC, 2× interpolation, fDAC = 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, fDATA = 61.44 MSPS,

73

IF = 61.44 MHz, quad mode, fDAC/4, 4×

interpolation, fDAC = 245 MSPS

Two-carrier W-CDMA with 3.84-MHz BW, 5-MHz spacing,

centered at IF, TESTMODEL 1, 10 ms, fDATA = 122.88 MSPS,

72

IF = 30.72 MHz, dual DAC, 2× interpolation, fDAC = 245 MSPS

Four-carrier W-CDMA with 3.84-MHz BW, 5-MHz spacing,

centered at IF, TESTMODEL 1, 10 ms, fDATA = 121.88 MSPS,

64

complex IF - 30.72 MHz, quad mode, fDAC/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 (> fDATA/2).

Copyright © 2003–2009, Texas Instruments Incorporated

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