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ELECTRICAL CHARACTERISTICS

(1)

DAC8802

SBAS351B – AUGUST 2005 – REVISED FEBRUARY 2007

V

DD = 2.7 V to 5.5 V, IOUTX = Virtual GND, AGNDX = 0 V, VREFA, B = 10 V, TA = full operating temperature range, unless

otherwise noted.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

STATIC PERFORMANCE(2)

Resolution

14

Bits

Relative accuracy

INL

±1

LSB

Differential nonlinearity

DNL

±1

LSB

Data = 0000h, TA = 25°C

10

nA

Output leakage current

IOUTX

Data = 0000h, TA = TA max

20

nA

Full-scale gain error

GFSE

Data = 3FFFh

±0.75

±4

mV

Full-scale tempco(3)

TCVFS

1

ppm/

°C

Feedback resistor

RFBX

VDD = 5 V

5

k

Ω

REFERENCE INPUT(3)

VREFX Range

VREFX

–15

15

V

Input resistance

RREFX

4

5

6

k

Ω

Input resistance match

RREFX

Channel-to-channel

1

%

Input capacitance

CREFX

5

pF

ANALOG OUTPUT(3)

Output current

IOUTX

Data = 3FFFh

1.6

2.5

mA

Output capacitance

COUTX

Code-dependent

50

pF

LOGIC INPUTS(3)

VDD = 2.7 V

0.6

V

Input low voltage

VIL

VDD = 5 V

0.8

V

VDD = 2.7 V

2.1

V

Input high voltage

VIH

VDD = 5 V

2.4

V

Input leakage current

IIL

1

µA

Input capacitance

CIL

10

pF

INTERFACE TIMING (4)

Clock width high

tCH

10

ns

Clock width low

tCL

10

ns

CS to Clock setup

tCSS

0

ns

Clock to CS hold

tCSH

10

ns

Clock to SDO prop delay

tPD

2

20

ns

Load DAC pulsewidth

tLDAC

20

ns

Data setup

tDS

10

ns

Data hold

tDH

10

ns

Load setup

tLDS

5

ns

Load hold

tLDH

25

ns

(1)

Specifications subject to change without notice.

(2)

All static performance tests (except IOUT) are performed in a closed-loop system using an external precision OPA277 I-to-V converter

amplifier. The DAC8802 RFB terminal is tied to the amplifier output. Typical values represent average readings measured at +25°C.

(3)

These parameters are specified by design and not subject to production testing.

(4)

All input control signals are specified with tR = tF = 2.5 ns (10% to 90% of 3 V) and timed from a voltage level of 1.5 V.

3

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