LTC2636
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 2.7V to 5.5V, VOUT unloaded unless otherwise specified.
LTC2636-LMI12/-LMI10/-LMI8/-LMX12/-LMX10/-LMX8/-LZ12/-LZ10/-LZ8 (VFS = 2.5V)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Reference Input
l
l
V
Input Voltage Range
Resistance
1
V
V
kΩ
pF
REF
CC
120
160
12
200
Capacitance
l
l
I
Reference Current, Power-Down Mode
DAC Powered Down
0.005
0.1
μA
REF
Reference Output
Output Voltage
1.24
1.25
10
1.26
V
ppm/°C
kΩ
Reference Temperature Coefficient
Output Impedance
0.5
10
Capacitive Load Driving
Short Circuit Current
μF
V
CC
= 5.5V; REF Shorted to GND
2.5
mA
Digital I/O
V
Digital Input High Voltage
Digital Input Low Voltage
V
V
= 3.6V to 5.5V
= 2.7V to 3.6V
l
l
2.4
2.0
V
V
IH
CC
CC
V
IL
V
CC
V
CC
= 4.5V to 5.5V
= 2.7V to 4.5V
l
l
0.8
0.6
V
V
l
l
I
Digital Input Leakage
V
= GND to V
CC
1
μA
pF
LK
IN
C
Digital Input Capacitance
(Note 8)
2.5
IN
AC Performance
t
S
Settling Time
V
= 3V (Note 9)
CC
0.39% ( 1LSB at 8 Bits)
0.098% ( 1LSB at 10 Bits)
0.024% ( 1LSB at 12 Bits)
3.4
4.0
4.4
μs
μs
μs
Voltage Output Slew Rate
Capacitive Load Driving
Glitch Impulse
1.0
500
2.1
V/μs
pF
At Mid-Scale Transition
nV•s
nV•s
kHz
DAC-to-DAC Crosstalk
Multiplying Bandwidth
Output Voltage Noise Density
1 DAC held at FS, 1 DAC Switch 0-FS
External Reference
2.1
320
e
n
At f = 1kHz, External Reference
At f = 10kHz, External Reference
At f = 1kHz, Internal Reference
At f = 10kHz, Internal Reference
180
160
200
180
nV/√Hz
nV/√Hz
nV/√Hz
nV/√Hz
Output Voltage Noise
0.1Hz to 10Hz, External Reference
0.1Hz to 10Hz, Internal Reference
0.1Hz to 200kHz, External Reference
0.1Hz to 200kHz, Internal Reference
35
40
680
730
μV
μV
μV
μV
P-P
P-P
P-P
P-P
C
= 0.1μF
REF
2636f
6