Datasheet

LTC2636
6
2636fb
electrical characteristics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 2.7V to 5.5V, V
OUT
unloaded unless otherwise specified.
LTC2636-LMI12/-LMI10/-LMI8/-LMX12/-LMX10/-LMX8/-LZ12/-LZ10/-LZ8 (V
FS
= 2.5V)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference Input
V
REF
Input Voltage Range
l
1 V
CC
V
Resistance
l
120 160 200 kΩ
Capacitance 12 pF
I
REF
Reference Current, Power-Down Mode DAC Powered Down
l
0.005 1.5 µA
Reference Output
Output Voltage
l
1.24 1.25 1.26 V
Reference Temperature Coefficient ±10 ppm/°C
Output Impedance 0.5 kΩ
Capacitive Load Driving 10 µF
Short Circuit Current V
CC
= 5.5V; REF Shorted to GND 2.5 mA
Digital I/O
V
IH
Digital Input High Voltage V
CC
= 3.6V to 5.5V
V
CC
= 2.7V to 3.6V
l
l
2.4
2.0
V
V
V
IL
Digital Input Low Voltage V
CC
= 4.5V to 5.5V
V
CC
= 2.7V to 4.5V
l
l
0.8
0.6
V
V
I
LK
Digital Input Leakage V
IN
= GND to V
CC
l
±1 µA
C
IN
Digital Input Capacitance (Note 8)
l
2.5 pF
AC Performance
t
S
Settling Time V
CC
= 3V (Note 9)
±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 1.0 V/µs
Capacitive Load Driving 500 pF
Glitch Impulse At Mid-Scale Transition 2.1 nV•s
DAC-to-DAC Crosstalk 1 DAC held at FS, 1 DAC Switch 0-FS 2.1 nV•s
Multiplying Bandwidth External Reference 320 kHz
e
n
Output Voltage Noise Density 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
C
REF
= 0.1µF
35
40
680
730
µV
P-P
µV
P-P
µV
P-P
µV
P-P