
M
Buffered, Fast-Settling, Dual, 12-/10-/8-Bit,
Voltage-Output DACs
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= 2.7V to 3.6V, DV
DD
= 1.8V to AV
DD
, AGND = 0, DGND = 0, V
REF
= 2.5V, R
L
= 10k
, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25
°
C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
POWER REQUIREMENTS
MIN
TYP
MAX
UNITS
Analog Supply Voltage
Range
AV
DD
2.7
3.6
V
Digital Supply Voltage
Range
DV
DD
1.8
AV
DD
V
Unity gain
0.55
0.8
μA
SLOW mode, all digital inputs
at DGND or DV
DD
, no load,
V
REF
= 2.5V
Force sense
0.9
1.2
mA
Unity gain
0.85
2
Operating Supply
Current
I
AVDD
+
I
DVDD
FAST mode, all digital inputs
at DGND or DV
DD
, no load,
V
REF
= 2.5V
Force sense
1.2
2
mA
Shutdown Supply
Current
I
AV D D S H D N
+
I
D V D D S H D N
No clocks, all digital inputs at DGND or DV
DD
, all
DACs in shutdown mode
2.5
μA
TIMING CHARACTERISTICS—DSP Mode Disabled (3V, 3.3V Logic) (Figure 1)
(DVDD= 2.7V to 3.6V, DGND = 0, TA= TMINto TMAX, unless otherwise noted.)
PARAMETER
SYMBOL
f
SCLK
t
CH
t
CL
t
CSS
t
CSH
t
CS0
t
DS
t
DH
CONDITIONS
MIN
TYP
MAX
20
UNITS
MHz
ns
ns
ns
ns
ns
ns
ns
SCLK Frequency
SCLK Pulse-Width High
SCLK Pulse-Width Low
CS
Fall to SCLK Rise Setup Time
SCLK Rise to
CS
Rise Hold Time
SCLK Rise to
CS
Fall Setup Time
DIN to SCLK Rise Setup Time
DIN to SCLK Rise Hold Time
2.7V < DV
DD
< 3.6V
(Note 7)
(Note 7)
20
20
10
5
10
12
5
SCLK Rise to DOUTDC1 Valid
Propagation Delay
t
DO1
C
L
= 20pF, UPIO_ = DOUTDC1 mode
30
ns
SCLK Fall to DOUT_ Valid
Propagation Delay
t
DO2
C
L
= 20pF, UPIO_ = DOUTDC0 or DOUTRB
mode
30
ns
CS
Rise to SCLK Rise Hold Time
CS
Pulse-Width High
t
CS1
t
CSW
MICROWIRE and SPI modes 0 and 3
10
45
ns
ns