Rainbow Electronics MAX550A - Manual (Page 3)

MAX548A/MAX549A/MAX550A
+2.5V to +5.5V, Low-Power, Single/Dual,
8-Bit Voltage-Output DACs in µMAX Package
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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
UNITS MIN TYP MAX SYMBOL PARAMETER
Voltage-Output Slew Rate
C L = 20pF µs Wake-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 V 2.5 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 µA 0.3 10
V DD = 5.5V
V DD = 2.5V
Shutdown Current Shutdown mode µA 0.3
150 250
80
50
SCLK Period t CP
CS High to LDAC Low
ns
t CSLD ns MAX548A/MAX550A only
5 V DD High to CS Low µs
50 LDAC Pulse Width Low t LDAC ns MAX548A/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
30 DIN to SCLK High Setup t DS ns
0
DIN to SCLK High Hold
V DD = 2.5V
40 SCLK Pulse Width Low t CL ns
PARAMETER SYMBOL MIN TYP MAX UNITS CONDITIONS
40 SCLK Pulse Width High t CH ns
DYNAMIC PERFORMANCE
POWER SUPPLIES
10 SCLK High to CS Low Hold t CSH0 ns