DAC5687IPZP datasheet(6/79 Pages) TI

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ELECTRICAL CHARACTERISTICS (DC SPECIFICATIONS)

DAC5687

SLWS164E – FEBRUARY 2005 – REVISED SEPTEMBER 2006

THERMAL CHARACTERISTICS (continued)

over operating free-air temperature range (unless otherwise noted)

Thermal Conductivity

100 HTQFP

UNIT

Theta junction-to-case

0.12

°C/W

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 = 19.2 mA (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

RESOLUTION

Bits

DC ACCURACY(1)

1 LSB = IOUTFS/2

INL

Integral nonlinearity

±4

LSB

TMIN to TMAX

DNL

Differential nonlinearity

±4

LSB

ANALOG OUTPUT

Coarse gain linearity

±0.04

LSB

Worst-case error from ideal linearity

Fine gain linearity

±3

LSB

Offset error

Mid code offset

0.01

%FSR

Without internal reference

%FSR

Gain error

With internal reference

0.7

%FSR

With internal reference, dual DAC, and SSB

Gain mismatch

–2

%FSR

mode

Minimum full-scale output current(2)

Maximum full-scale output current(2)

AVDD –

AVDD

Output compliance range(3)

IOUTFS = 20 mA

0.5 V

+ 0.5 V

Output resistance

300

Ω

Output capacitance

REFERENCE OUTPUT

Reference voltage

1.14

1.2

1.26

Reference output current(4)

100

REFERENCE INPUT

VEXTIO

Input voltage range

0.1

1.25

Input resistance

Ω

Small signal bandwidth

1.4

MHz

Input capacitance

100

TEMPERATURE COEFFICIENTS

ppm of

Offset drift

±1

FSR/

°C

Without internal reference

±15

ppm of

Gain drift

FSR/

°C

With internal reference

±30

ppm of

Reference voltage drift

±8

FSR/

°C

(1)

Measured differential across IOUTA1 and IOUTA2 or IOUTB1 and IOUTB2 with 25

Ω each to AVDD.

(2)

Nominal full-scale current, IOUTFS , equals 32× the IBIAS current.

(3)

The upper limit of the output compliance is determined by the CMOS process. Exceeding this limit may result in transistor breakdown,

resulting in reduced reliability of the DAC5687 device. The lower limit of the output compliance is determined by the load resistors and

full-scale output current. Exceeding the limits adversely affects distortion performance and integral nonlinearity.

(4)

Use an external buffer amplifier with high impedance input to drive any external load.

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