Instruction Manual
MAX5230/MAX5231
3V/5V, 12-Bit, Serial Voltage-Output Dual DACs
with Internal Reference
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Note 1: Accuracy is guaranteed as shown in the following table:
Note 2: Offset is measured at the code closest to 10mV.
Note 3: Temperature coefficient is determined by the box method in which the maximum ∆V
OUT
over the temperature range is
divided by ∆T.
Note 4: DC crosstalk is measured as follows: set DAC A to midscale, and DAC B to zero, and measure DAC A output; then change
DAC B to full scale, and measure ∆V
OUT
for DAC A. Repeat the same measurement with DAC A and DAC B interchanged.
DC crosstalk is the maximum ∆V
OUT
measured.
Note 5: Accuracy is better than 1LSB for V
OUT_
= 10mV to V
DD
- 180mV.
Note 6: Guaranteed by design, not production tested.
Note 7: R
LOAD
= ∞ and digital inputs are at either V
DD
or DGND.
ACCURACY GUARANTEED
V
DD
(V)
FROM CODE TO CODE
3 20 4095
5 10 4095
TIMING CHARACTERISTICS—MAX5231
(V
DD
= +4.5V to +5.5V, AGND = DGND = 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
(Figures 1 and 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SCLK Clock Period t
CP
74 ns
SCLK Pulse Width High t
CH
30 ns
SCLK Pulse Width Low t
CL
30 ns
CS Fall to SCLK Rise Setup Time t
CSS
30 ns
SCLK Rise to CS Rise Hold Time t
CSH
0ns
DIN Setup Time t
DS
30 ns
DIN Hold Time t
DH
0ns
SCLK Rise to DOUT Valid
Propagation Delay Time
t
DO1
C
LOAD
= 200pF 80 ns
SCLK Fall to DOUT Valid
Propagation Delay Time
t
DO2
C
LOAD
= 200pF 80 ns
SCLK Rise to CS Fall Delay t
CS0
10 ns
CS Rise to SCLK Rise Hold Time t
CS1
30 ns
CS Pulse Width High t
CSW
75 ns
LDAC Pulse Width Low t
LDL
30 ns
CS Rise to LDAC Rise Hold Time t
CSLD
(Note 8) 40 ns
ELECTRICAL CHARACTERISTICS—MAX5230 (continued)
(V
DD
= +2.7V to +3.6V, OS_ = AGND = DGND = 0, R
L
= 5kΩ, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values
are at T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER SUPPLIES
Power-Supply Voltage V
DD
2.7 3.6 V
Power-Supply Current (Note 7) I
DD
420 475 µA
Full power-down mode 0.9 5
One DAC shutdown mode 320 360
Power-Supply Current in Power-Down
and Shutdown Modes (Note 7)
Both DACs shutdown mode 220 245
µA