Datasheet

5Maxim Integrated
MAX5318
18-Bit, High-Accuracy Voltage Output DAC with
Digital Gain, Offset Control, and SPI Interface
ELECTRICAL CHARACTERISTICS
(V
AVDD
= V
DDIO
= 2.7V to 3.3V, V
AVSS
= -1.25V, V
AGND
= V
DGND
= V
AGND_F
= V
AGND_S
= 0V, V
REF
= 2.5V, TC/SB = PD = LDAC =
M/Z = DGND, RST = V
DDIO
, C
REFO
= 100pF, C
L
= 100pF, R
L
= 10kω, C
BYPASS
= 1µF, GAIN = 0x3FFFF, OFFSET = 0x00000,
T
A
= -40°C to +105°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (GAIN = 0x3FFFF and OFFSET = 0x00000.)(Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
STATIC PERFORMANCE
Resolution N 18 Bits
Integral Nonlinearity (Note 3) INL
DIN = 0x00000 to 0x3FFFF (binary
mode), DIN = 0x20000 to 0x1FFFF (two’s
complement mode)
-2.0 Q0.75 +2.0 LSB
DIN = 0x01900 to 0x3FFFF (binary
mode), DIN = 0x21900 to 0x1FFFF (two’s
complement mode), V
AVSS
= 0V
Differential Nonlinearity (Note 3) DNL -1.0 Q0.3 +1.0 LSB
Zero Code Error OE
DIN = 0, T
A
= +25NC -50 Q6 +50
LSB
DIN = 0, T
A
= -40NC to +105NC Q25
Zero Code Error Drift (Note 4) DIN = 0 -2.7 Q1.4 +2.7 ppm/NC
Gain Error GE
T
A
= +25NC -16 Q1.5 +16
LSB
T
A
= -40NC to +105NC Q35
Gain Error Temperature
Coefficient (Note 4)
TCGE -3.2 +3.2
ppm/NC
of FSR
Output Voltage Range No load 0
V
AVDD
-
0.1
V
Reset Voltage Output V
OUT-RESET
RST = pulse low
M/Z = DGND 75 FV
M/Z = V
DDIO
1.25 V
RST = pulse low,
V
AVSS
= 0V
M/Z = DGND 10 mV
M/Z = V
DDIO
1.25 V
RST = DGND
M/Z = DGND -40 mV
M/Z = V
DDIO
1.25 V
RST = DGND,
V
AVSS
= 0V
M/Z = DGND 10 mV
M/Z = V
DDIO
1.24 V
DC Output Impedance R
OUT
Closed-loop connection, RFB connected
to OUT
4 mI
Output Current I
OUT
Source/sink within 100mV of the supply rails Q4
mA
Source/sink within 800mV of the supply rails Q25
Load Capacitance to GND C
L
200 pF
Load Resistance to GND R
L
For specified performance 2 kI
Short-Circuit Current I
SC
OUT shorted to AGND or AVDD Q60
mAREFO shorted to AGND or AVDD Q65
BYPASS shorted to AGND or AVDD Q48
Short-Circuit Duration t
SC
Short to AGND or AVDD
Indefinite
s