Datasheet

MAX520/MAX521
Quad/Octal, 2-Wire Serial 8-Bit DACs
with Rail-to-Rail Outputs
4 _______________________________________________________________________________________
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: V
REF_
= 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: V
REF_
= 4Vp-p, 10kHz, DAC code = 00 hex.
Note 5: Guaranteed by design.
Note 6: I
2
C-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)
(V
DD
= 5V ±10%, V
REF_
= 4V, R
L
= ∞ (MAX520), R
L
= 10kΩ (MAX521), C
L
= 0pF (MAX520), C
L
= 100pF (MAX521), T
A
= T
MIN
to T
MAX
,
unless otherwise noted. Typical values are at T
A
= +25°C)
MAX521BM
MAX521_C
0.7MAX521_E
MAX520_
1.0
MAX521_C
MAX521_E/BM
Power-down mode (PD = 1)
10 20
420
Positive and negative
CONDITIONS
V/µs
0.5
Voltage Output Slew Rate
Operating mode, out-
put unloaded, all dig-
ital inputs 0V or V
DD
mA
420
I
DD
10 24
Supply Current
UNITSMIN TYP MAXSYMBOLPARAMETER
MAX520_, to 1/2LSB, no load
µs
2
Output Settling Time
Code = 00 hex, all digital inputs from
0V to V
DD
nV-s5Digital Feedthrough
MAX521_, to 1/2LSB, 10kΩ and
100pF load (Note 7)
6
Code 128 to 127 nV-s12Digital-Analog Glitch Impulse
V
REF_
= 4Vp-p at 1kHz, V
DD
= 5V,
code = FF hex
dB87SINADSignal to Noise + Distortion Ratio
V
REF_
= 4Vp-p, 3dB bandwidth MHz1Multiplying Bandwidth
MAX521_ µV
RMS
60Wideband Amplifier Noise
V4.5 5.5V
DD
Supply Voltage
µA
µA
DYNAMIC PERFORMANCE
POWER REQUIREMENTS