Owner manual

MAX5548
Dual, 8-Bit, Programmable, 30mA
High-Output-Current DAC
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
DD
to GND .............................................................-0.3V to +6V
OUTA, OUTB to GND.................................-0.3V to (V
DD
+ 0.3V)
REFIN CS/AO, DOUT/AI, SPI/I2C, FSADJA,
FSADJB to GND ......................................-0.3V to (V
DD
+ 0.3V)
SCLK/SCL, DIN/SDA ................................................-0.3V to +6V
Continuous Power Dissipation (T
A
= +85°C)
16-Pin Thin QFN (derate 17.5mW/°C above +70°C) ..1398.6mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature .....................................................+150°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................+300°C
ELECTRICAL CHARACTERISTICS
(V
DD
= +2.7V to +5.25V, GND = 0, V
REFIN
= +1.25V, internal reference, R
FSADJ_
= 20kΩ; compliance voltage = (V
DD
- 0.6V),
V
SCLK/SCL
= 0, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
DD
= +3.0V and T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
STATIC PERFORMANCE—ANALOG SECTION
Resolution 8 Bits
Integral Nonlinearity INL I
OUT
_ = 1mA to 30mA (Note 2) ±1 LSB
Differential Nonlinearity DNL Guaranteed monotonic ±1 LSB
Offset I
OS
-13 -4 LSB
Zero-Scale Error I
OUT
_ = 1mA to 30mA, code = 0x00 1 µA
Full-Scale Error
I
OUT
_ = 1mA to 30mA, code = 0xFF,
includes offset
-4 LSB
REFERENCE
Internal Reference Range 1.21 1.25 1.29 V
Internal Reference Tempco 30 ppm/°C
External Reference Range 0.5 1.5 V
External Reference Input Current 108 225 µA
DAC OUTPUTS
Full-Scale Current (Note 3) 1 30 mA
Output Current Leakage in
Shutdown
±1 µA
Output Capacitance 10 pF
I
OUT
_ = 30mA 1
T
A
= +25°C 0.55
Current Source Dropout Voltage
(V
DD
- V
OUT
_)
I
OUT
_ = 20mA
T
A
= -40°C to +85°C 0.6
V
Output Impedance at Full-Scale
Current
100 kΩ
Capacitive Load to Ground C
LOAD
10 nF
Series Inductive Load L
LOAD
100 nH
Maximum FSADJ_ Capacitive
Load
C
FSADJ_
75 pF
DYNAMIC PERFORMANCE
Settling Time t
S
C
LOAD
= 24pF, L
LOAD
= 27nH (Note 4) 30 µs
Digital Feedthrough 2 nVs
Digital-to-Analog Glitch Impulse 40 nVs