Rainbow Electronics MAX5547 - Manual (Page 4)

MAX5547
Dual, 10-Bit, Current-Sink Output DAC
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V DD = +2.7 to +5.25V, GND = 0, 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 0 ns
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: Guaranteed by design. Not production tested.
Note 4: 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 5: Compliance voltage range is defined as the range where the output current is -2 LSB of its value at V OUT = +1V.
Note 6: Settling time is measured from 0.25 x full scale to 0.75 x full scale.
Note 7: The device draws higher supply current when the digital inputs are driven with voltages between (V
DD - 0.5V) and (GND +
0.5V). See Supply Current vs. Digital Input Voltage in the Typical Operating Characteristics.
Typical Operating Characteristics
(V
DD
= +3.0V, GND = 0, external reference = +2.5V, T
A
= +25°C, unless otherwise noted.)
-4
-3
-2
-1
0
1
2
3
4
0 256 512 768 1024
INTEGRAL NONLINEARITY
vs. DIGITAL INPUT CODE (1.2mA SETTING)
MAX5547 toc01
DIGITAL INPUT CODE
INL (LSB)
-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)