DAC5682Z datasheet(8/59 Pages) TI

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ELECTRICAL CHARACTERISTICS — AC SPECIFICATION

(1)

DAC5682Z

SLLS853C – AUGUST 2007 – REVISED JUNE 2009 ........................................................................................................................................................ www.ti.com

Over recommended operating free-air temperature range, AVDD, IOVDD = 3.3 V, CLKVDD, DVDD = 1.8 V, IOUTFS = 20 mA,

4:1 transformer output termination, 50

Ω doubly terminated load (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ANALOG OUTPUT

Maximum output update

fCLK

1000

MSPS

rate

Output settling time to

Transition: Code 0x0000 to 0xFFFF

ts(DAC)

10.4

0.1%

tpd

Output propagation delay

2.5

Output rise time 10% to

tr(IOUT)

220

90%

Output fall time 90% to

tf(IOUT)

220

10%

No interpolation, PLL Off

DAC

Digital latency

x2 interpolation, PLL Off

163

clock

cycles

x4 interpolation, PLL Off

308

IOUT current settling to 1% of IOUTFS.

DAC wake-up time

Measured from SDENB; Register 0x06, toggle Bit 4 from 1 to 0.

Power-

µs

up time

IOUT current settling to 1% of IOUTFS.

DAC sleep time

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,

First Nyquist Zone < fDATA/2

Spurious free dynamic

2X2, PLL off, CLKIN = 1000 MHz, DACA and DACB on,

SFDR

dBc

range

IF = 5.1 MHz, First Nyquist Zone < fDATA/2

2X2, PLL off, CLKIN = 1000 MHz, DACA and DACB on,

IF = 20.1 MHz, First Nyquist Zone < fDATA/2

2X2, PLL off, CLKIN = 500 MHZ, DACA and DACB on, Single

tone, 0 dBFS, IF = 20.1 MHz

2X2, PLL off, CLKIN = 1000 MHZ, DACA and DACB on, Single

tone, 0 dBFS, IF = 20.1 MHz

2X2, PLL off, CLKIN = 1000 MHZ, DACA and DACB on, Single

tone, 0 dBFS, IF = 70.1 MHz

SNR

Signal-to-noise ratio

dBc

2X4, PLL off, CLKIN = 1000 MHZ, DACA and DACB on, Single

tone, 0 dBFS, IF = 180 MHz

2X2 CMIX, PLL off, CLKIN = 1000 MHZ, DACA and DACB on,

Single tone, 0 dBFS, IF = 300.2 MHz

2X2, PLL off, CLKIN = 1000 MHZ, DACA and DACB on, Four

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,

IF = 20.1 and 21.1 MHz

Third-order two-tone

2X2, PLL off, CLKIN = 1000 MHZ, DACA and DACB on,

IMD3

intermodulation

dBc

IF = 70.1 and 71.1 MHz

(each tone at –6 dBFS)

2X2 CMIX, PLL off, CLKIN = 1000 MHZ, DACA and DACB on,

IF = 150.1 and 151.1 MHz

Four-tone intermodulation

2X2 CMIX, PLL off, CLKIN = 1000 MHz, DACA and DACB on,

IMD

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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