LTC1654
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
Voltage Output Slew Rate
Voltage Output Settling Time
Digital Feedthrough
Midscale Glitch Impulse
Output Noise Voltage Density
Digital I/O
V
IH
V
IL
V
OH
V
OL
V
IH
V
IL
V
OH
V
OL
I
LEAK
C
IN
Digital Input High Voltage
Digital Input Low Voltage
Digital Output High Voltage
Digital Output Low Voltage
Digital Input High Voltage
Digital Input Low Voltage
Digital Output High Voltage
Digital Output Low Voltage
Digital Input Leakage
Digital Input Capacitance
Reference Input Resistance
Reference Input Range
Reference Input Current
Switching Characteristics (V
CC
= 4.5V to 5.5V)
t
1
t
2
t
3
t
4
t
5
t
6
t
7
t
8
t
9
t
10
t
1
t
2
t
3
t
4
t
5
t
6
t
7
SDI Valid to SCK Setup
SDI Valid to SCK Hold
SCK High Time
SCK Low Time
CS/LD Pulse Width
LSB SCK to CS/LD
CS/LD Low to SCK
SD0 Output Delay
SCK Low to CS/LD Low
CLR Pulse Width
SDI Valid to SCK Setup
SDI Valid to SCK Hold
SCK High Time
SCK Low Time
CS/LD Pulse Width
LSB SCK to CS/LD
CS/LD Low to SCK
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
V
CC
= 5V
V
CC
= 5V
CONDITIONS
AC Performance
The
●
denotes specifications which apply over the full operating tempera-
ture range, otherwise specifications are at T
A
= 25°C. Unless otherwise noted, V
CC
= 2.7V to 5.5V, V
OUT A
, V
OUT B
unloaded, REFHI A,
REFHI B = 4.096V (V
CC
= 5V), REFHI A, REFHI B = 2.048V (V
CC
= 2.7V), REFLO = 0V, X
1
/X
1/2
= 0V.
MIN
●
●
TYP
0.9
3.8
8.5
3.0
1
20
170
150
MAX
UNITS
V/µs
V/µs
µs
µs
nV•s
nV•s
nV/√Hz
nV/√Hz
V
(Note 8) SLOW
(Note 8) FAST
(Note 4) to
±1LSB,
SLOW
(Note 4) to
±1LSB,
FAST
(Note 7)
DAC Switch Between 8000 and 7FFF
at 10kHz, SLOW
at 10kHz, FAST
0.20
1.25
●
●
●
●
●
●
●
●
●
2.4
0.8
V
CC
– 0.4
0.4
2.4
0.8
V
CC
– 0.4
0.4
±10
10
V
V
V
V
V
V
V
µA
pF
kΩ
V
CC
= 5V, I
OUT
= – 1mA, D
OUT
Only
V
CC
= 5V, I
OUT
= 1mA, D
OUT
Only
V
CC
= 3V
V
CC
= 3V
V
CC
= 3V, I
OUT
= – 1mA, D
OUT
Only
V
CC
= 3V, I
OUT
= 1mA, D
OUT
Only
V
IN
= GND to V
CC
(Note 6)
REFHI to REFLO
(Note 6)
In Shutdown
Reference Input
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
30
0
60
V
CC
1
V
µA
ns
ns
ns
ns
ns
ns
ns
30
0
15
15
15
10
10
5
10
30
45
0
20
20
20
15
15
100
C
LOAD
= 100pF
(Note 6)
(Note 6)
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
1654fb
Switching Characteristics (V
CC
= 2.7V to 5.5V)
3
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