MAX521 datasheet(4/20 Pages) MAXIM

4 / 20 page

Quad/Octal, 2-Wire Serial 8-Bit DACs

with Rail-to-Rail Outputs

_______________________________________________________________________________________

Note 1: Input resistance is code dependent. The lowest input resistance occurs at code = 55 hex.

Note 2: Input capacitance is code dependent. The highest input capacitance occurs at code = FF hex.

Note 3: VREF_ = 4Vp-p, 10kHz. Channel-to-channel isolation is measured by setting the code of one DAC to FF hex and setting the

code of all other DACs to 00 hex.

Note 4: VREF_ = 4Vp-p, 10kHz, DAC code = 00 hex.

Note 5: Guaranteed by design.

Note 6: I2C-compatible mode.

Note 7: Output settling time is measured by taking the code from 00 hex to FF hex, and from FF hex to 00 hex.

ELECTRICAL CHARACTERISTICS (continued)

(VDD = 5V ±10%, VREF_ = 4V, RL = ∞ (MAX520), RL = 10kΩ (MAX521), CL = 0pF (MAX520), CL = 100pF (MAX521), TA = TMIN to TMAX,

unless otherwise noted. Typical values are at TA = +25°C)

MAX521BM

MAX521_C

0.7

MAX521_E

MAX520_

1.0

MAX521_C

MAX521_E/BM

Power-down mode (PD = 1)

420

Positive and negative

CONDITIONS

V/µs

0.5

Voltage Output Slew Rate

Operating mode, out-

put unloaded, all dig-

ital inputs 0V or VDD

420

IDD

Supply Current

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

MAX520_, to 1/2LSB, no load

µs

Output Settling Time

Code = 00 hex, all digital inputs from

0V to VDD

nV-s

Digital Feedthrough

MAX521_, to 1/2LSB, 10k

Ω and

100pF load (Note 7)

Code 128 to 127

nV-s

Digital-Analog Glitch Impulse

VREF_ = 4Vp-p at 1kHz, VDD = 5V,

code = FF hex

SINAD

Signal to Noise + Distortion Ratio

VREF_ = 4Vp-p, 3dB bandwidth

MHz

Multiplying Bandwidth

MAX521_

µVRMS

Wideband Amplifier Noise

4.5

5.5

VDD

Supply Voltage

µA

DYNAMIC PERFORMANCE

POWER REQUIREMENTS

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