Datasheet
MAX548A/MAX549A/MAX550A
+2.5V to +5.5V, Low-Power, Single/Dual,
8-Bit Voltage-Output DACs in µMAX Package
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.5V to +5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C)
TIMING CHARACTERISTICS
(V
DD
= +2.5V to +5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Digital inputs switching from 0V to V
DD
.) (Figure 3) (Note 4)
Note 1: Cold temperature specifications (to -40°C) guaranteed by design using six sigma design limits.
Note 2: Worst-case input resistance at REF occurs at DAC code 55 hex.
Note 3: Worst-case reference input current occurs at DAC code 55 hex.
Note 4: Guaranteed by design. Not production tested.
Note 5: I
DD
measured with DACs loaded with worst-case DAC code 55 hex.
CS = high, all digital inputs from 0V to V
DD
C
L
= 20pF
To ±1/2LSB, C
L
= 20pF
V/µs
3.1
µs
1.4
Voltage-Output Settling Time 4
CONDITIONS
50 nV-sec
Digital Feedthrough and
Crosstalk
UNITSMIN TYP MAXSYMBOLPARAMETER
Voltage-Output Slew Rate
C
L
= 20pF µsWake-Up Time at Power-Up 4
V
DD
= 2.5V
V
DD
= 5.5V
Supply Voltage Range Outputs unloaded, all inputs = GND or V
DD
V
DD
V2.5 5.5
Supply Current
(MAX549A/MAX550A)
Outputs unloaded,
all inputs = GND or
V
DD
(Note 5)
µA
330 550
I
DD
Supply Current (MAX548A)
Outputs unloaded, all inputs = GND or V
DD
;
V
DD
= 5.5V
I
DD
µA0.3 10
V
DD
= 5.5V
V
DD
= 2.5V
Shutdown Current Shutdown mode µA0.3
150 250
80
50
SCLK Period t
CP
CS High to LDAC Low
ns
t
CSLD
nsMAX548A/MAX550A only
5
V
DD
High to CS Low
µs
50
LDAC Pulse Width Low
t
LDAC
nsMAX548A/MAX550A only
40
CS Pulse Width High
t
CSW
ns
20
t
CSH1
ns
V
DD
= 5.5V
10
30
t
DH
CS High to SCLK High Setup
ns
t
CSS1
ns
10
Delay, SCLK High to CS High
V
DD
= 2.5V
V
DD
= 5.5V
30
CS Low to SCLK High Setup
t
CSS0
ns
30DIN to SCLK High Setup t
DS
ns
0
DIN to SCLK High Hold
V
DD
= 2.5V
40SCLK Pulse Width Low t
CL
ns
PARAMETER SYMBOL MIN TYP MAX UNITSCONDITIONS
40SCLK Pulse Width High t
CH
ns
DYNAMIC PERFORMANCE
POWER SUPPLIES
10SCLK High to CS Low Hold t
CSH0
ns