Datasheet

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DAC8544
SLAS420A – MAY 2004 – REVISED JUNE 2005
ELECTRICAL CHARACTERISTICS (continued)
V
DD
= + 2.7 V to + 5.5 V; R
L
= 2 k Ω to GND; C
L
= 200 pF to GND; all specifications –40°C to +105°C unless otherwise noted
DAC8544
PARAMETER CONDITIONS MIN TYP MAX UNITS
Slew Rate R
L
= 2 k Ω ; C
L
<200 pF 1 V/ µ s
R
L
= ∞ 470 pF
Capacitive Load Stability
R
L
= 2 k Ω 1000 pF
Digital-to-Analog Glitch Impulse 20 nV-s
Digital Feedthrough 0.5 nV-s
DC Output Impedance 1 Ω
V
DD
= +5 V 50
Short-Circuit Current mA
V
DD
= +3 V 20
Coming out of power-down mode, 2.5
V
DD
= +5 V
Power-Up Time µ s
Coming out of power-down mode, 5
V
DD
= +3 V
REFERENCE INPUT
V
REF+
Input Range 0 V
DD
V
V
REF–
Input Range –0.1 0.0 V
DD
/2 V
Reference Input Impedance 140 k Ω
LOGIC INPUTS
Input Current ±1 µ A
V
IN
L, Input Low Voltage IOV
DD
= +1.8 V – +5.5 V 0.3 x IOV
DD
V
V
IN
H, Input High Voltage IOV
DD
= +1.8 V – +5.5 V 0.7 x IOV
DD
V
Pin Capacitance 3 pF
POWER REQUIREMENTS
V
DD
2.7 5.5 V
IOV
DD
1.8 5.5 V
I
DD
(Normal Mode) DAC active and excluding load current
V
DD
= +3.6 V to +5.5 V VI
H
= IOV
DD
and VI
L
= IOGND 1.0 1.6
mA
V
DD
= +2.7 V to +3.6 V VI
H
= IOV
DD
and VI
L
= IOGND 0.96 1.52
I
DD
(All Power-Down Modes)
V
DD
= +3.6 V to +5.5 V VI
H
= IOV
DD
and VI
L
= IOGND 0.2 1
µ A
V
DD
= +2.7 V to +3.6 V VI
H
= IOV
DD
and VI
L
= IOGND 0.05 1
POWER EFFICIENCY
I
OUT
/I
DD
I
LOAD
= 2 mA, V
DD
= +5 V 93 %
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