
4
LTC1654
1654fb
Note 4: DAC switched between code 2 kL and code 16383. See
Applications Information (page 11) for definition of low code kL.
Note 5: Digital inputs at 0V or VCC.
Note 6: Guaranteed by design.
Note 7: CS/LD = 0, VOUT = 4.096V and data is being clocked in.
Note 8: 100pF load capacitor.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Nonlinearity is defined from low code kL to code 16383. See
Applications Information (page 11).
Note 3: Offset error is measured at low code kL. See Applications
Information (page 11).
ELECTRICAL CHARACTERISTICS
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Integral Nonlinearity (INL)
vs Input Code
INPUT CODE
0
INL
(LSB)
0
0.5
1.0
16383
1654 G01
–0.5
–1.0
–2.0
8192
–1.5
2.0
1.5
INPUT CODE
0
DNL
(LSB)
0
0.5
1.0
16383
1654 G02
–0.5
–1.0
–2.0
8192
–1.5
2.0
1.5
TEMPERATURE (
°C)
–55
OFFSET
ERROR
(mV)
–1.25
1.25
125
1654 G03
–2.50
–25
535
65
95
2.50
0
Differential Nonlinearity (DNL)
vs Input Code
Offset vs Temperature
Gain Error vs Temperature
Minimum Output Voltage
vs Load Current (Output Sinking)
Minimum Supply Headroom vs
Load Current (Output Sourcing)
TEMPERATURE (
°C)
–55
GAIN
ERROR
(LSB)
–2.5
2.5
125
1654 G04
–5.0
–25
535
65
95
5.0
0
OUTPUT SINK CURRENT (mA)
0
OUTPUT
PULL-DOWN
VOLTAGE
(V)
0.6
0.8
1.0
10
1645 G05
0.4
0.2
0.5
0.7
0.9
0.3
0.1
0
5
15
CODE: ALL ZEROS
TA = 125°C
TA = 25°C
TA = –55°C
LOAD CURRENT (mA)
0
V
CC
–
V
OUT
(V)
0.6
0.8
1.0
10
1645 G06
0.4
0.2
0.5
0.7
0.9
0.3
0.1
0
5
15
TA = 125°C
CODE: ALL 1s
VREFHI = 4.096V
TA = 25°C
TA = –55°C
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Switching Characteristics (VCC = 2.7V to 5.5V)
t8
SDO Output Delay
CLOAD = 100pF
●
5
150
ns
t9
SCK Low to CS/LD Low
(Note 6)
●
15
ns
t10
CLR Pulse Width
(Note 6)
●
45
ns
The
● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. Unless otherwise noted, VCC = 2.7V to 5.5V, VOUT A, VOUT B unloaded,
REFHI A, REFHI B = 4.096V (VCC = 5V), REFHI A, REFHI B = 2.048V (VCC = 2.7V), REFLO = 0V, X1/X1/2 = 0V.