MAX5547
Dual, 10-Bit, Current-Sink Output DAC
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.7V to +5.25V, V
GND
= 0V, external reference = +2.5V, output voltage = +2.0V, T
A
= -40°C to +85°C. Typical values are at
V
DD
= +3.0V, and T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SPI TIMING CHARACTERISTICS (see Figure 1)
SCLK Clock Period t
CP
100 ns
SCLK Pulse-Width High t
CH
40 ns
SCLK Pulse-Width Low t
CL
40 ns
CS Fall to SCLK Fall Setup Time t
CSS
25 ns
SCLK Fall to CS Rise Hold Time t
CSH
50 ns
DIN to SCLK Fall Setup Time t
DS
40 ns
DIN to SCLK Fall Hold Time t
DH
0ns
CS Pulse-Width High t
CSW
100 ns
Note 1: Devices are 100% production tested at T
A
= +25°C. Limits over temperature are guaranteed by design.
Note 2: INL linearity is from code 48 to code 1023.
Note 3: Specification based on characterization data. Not production tested.
Note 4: Guaranteed by design. Not production tested.
Note 5: The DACs continue to operate at currents lower than 50µA on the 1.2mA range and 150µA on the 3.6mA range. However,
performance is not guaranteed at these low currents. A code of all zeros has a nominal output current of 0µA.
Note 6: Compliance voltage range is defined as the range where the output current is -2 LSB of its value at V
OUT
= +1V.
Note 7: Settling time is measured from 0.25 x full scale to 0.75 x full scale.
Note 8: The device draws higher supply current when the digital inputs are driven with voltages between (V
DD
- 0.5V) and (V
GND
+
0.5V). See Supply Current vs. Digital Input Voltage in the
Typical Operating Characteristics
.
Typical Operating Characteristics
(V
DD
= +3.0V, V
GND
= 0V, external reference = +2.5V, T
A
= +25°C, unless otherwise noted.)
INTEGRAL NONLINEARITY
vs. DIGITAL INPUT CODE (1.2mA SETTING)
MAX5547 toc01
DIGITAL INPUT CODE
INL (LSB)
768512256
-3
-2
-1
0
1
2
3
4
-4
0 1024
-4
-3
-2
-1
0
1
2
3
4
0 256 512 768 1024
INTEGRAL NONLINEARITY
vs. DIGITAL INPUT CODE (3.6mA SETTING)
MAX5547 toc02
DIGITAL INPUT CODE
INL (LSB)
-1.00
-0.75
-0.50
-0.25
0
0.25
0.50
0.75
1.00
0 256 512 768 1024
DIFFERENTIAL NONLINEARITY
vs. DIGITAL INPUT CODE (1.2mA SETTING)
MAX5547 toc03
DIGITAL INPUT CODE
DNL (LSB)
