MAX5547 Datasheet, PDF (4/12 Pages) Maxim Integrated Products – Dual, 10-Bit, Current-Sink Output DAC

Dual, 10-Bit, Current-Sink Output DAC
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
CS Fall to SCLK Fall Setup Time
t_CL
t_CSS
40
ns
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.)
INTEGRAL NONLINEARITY
vs. DIGITAL INPUT CODE (1.2mA SETTING)
4
3
2
1
0
-1
-2
-3
-4
0
256
512
768
1024
DIGITAL INPUT CODE
INTEGRAL NONLINEARITY
vs. DIGITAL INPUT CODE (3.6mA SETTING)
4
3
2
1
0
-1
-2
-3
-4
0
256
512
768
1024
DIGITAL INPUT CODE
DIFFERENTIAL NONLINEARITY
vs. DIGITAL INPUT CODE (1.2mA SETTING)
1.00
0.75
0.50
0.25
0
-0.25
-0.50
-0.75
-1.00
0
256
512
768
1024
DIGITAL INPUT CODE
4 _______________________________________________________________________________________