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DAC8580

SLAS458B – JUNE 2005 – REVISED AUGUST 2005

ELECTRICAL CHARACTERISTICS (continued)

All specifications at T

A = TMIN to TMAX, +AVDD = +5 V, –AVDD = –5 V, DVDD = +5 V, VREF = 4.096 V, unless otherwise noted

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

CL <200 pF, RL = 2 kΩ, to 0.1% FS, 8-V step

0.35

0.65

Settling time (large signal)

µs

To 0.003% FS, 8-V step

1.0

Settling time (small signal)

To 0.003% FS, 100-mV step

0.15

µs

Slew rate

From 10% to 90% of % FSR

35

V/µs

Code-to-code glitch impulse

1 LSB change around major carry

5

mV

Code-to-code glitch energy

1 LSB change around major carry

0.5

nV-s

Limited by slew-boost circuit operation during

100

mV

Overshoot

large-signal swings.

Digital feedthrough(2)

SCLK toggling

0.5

nV-s

Voltage output noise

Frequency = 100 kHz

20

nV/

√Hz

Frequency = 10 kHz

25

nV/

√Hz

F = 0.1 Hz to 10 Hz

25

µVp-p

Power supply rejection

VDD varies ±10%

0.3

mV/V

REFERENCE INPUT CHARACTERISTICS

Reference input voltage range

3.0

AVDD

V

Reference input impedance

5

k

Ω

Reference input capacitance

5

pF

Reference multiplying bandwidth

Large signal (1 V peak-to-peak)

3

MHz

Reference multiplying bandwidth

Small signal

10

MHz

AC CHARACTERISTICS

DAC output signal (sine wave) frequency = 1 kHz,

DAC input update rate = 192 KSPS,

–72

Digital filter is OFF

DAC output signal (sine wave) frequency = 40 kHz,

DAC input update rate = 1 MSPS,

–72

–56

dB

2nd Harmonic distortion

Digital filter oversampling rate = 16(3)

DAC output signal (sine wave) frequency = 1 kHz,

DAC input update rate = 192 KSPS

–100

Software calibrated, digital filter is OFF(4)

DAC output signal (sine wave) frequency = 1 kHz,

DAC input update rate = 192 KSPS,

–72

Digital filter is OFF

DAC output signal (sine wave) frequency = 40 kHz,

DAC input update rate= 1 MSPS,

–72

–56

dB

3rd Harmonic distortion

Digital filter oversampling rate = 16(3)

DAC output signal (sine wave) frequency = 1 kHz,

DAC input update rate = 192 KSPS,

–100

Software calibrated, digital filter is OFF(4)

DAC output signal (sine wave) frequency = 1 kHz,

DAC input update rate = 192 KSPS,

72

dB

Digital filter is OFF

DAC output signal (sine wave) frequency = 40 kHz,

Spurious free dynamic range (SFDR)

DAC input update rate= 1 MSPS,

56

70

Digital filter oversampling rate =16(3)

dB

DAC output signal (sine wave) frequency = 1 kHz,

DAC input update rate = 192 KSPS,

–100

Software calibrated, digital filter is OFF(4)

(2)

Digital feedthrough error is defined as the area of the impulse injected into the analog output from the digital input, during the toggling of

the digital input.

(3)

No analog filter is used. On-chip digital filter is set at oversampling ratio of 16. High-speed digitizer has 10-MHz input bandwidth. This

specification is 100% tested during production.

(4)

Software calibration requires the user to calibrate the linearity error using a precision digitizer and provide the DAC inputs from a lookup

table.

3

Not Recommended For New Designs