2645L8 查看數據表（PDF） - Linear Technology
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2645L8 Datasheet PDF : 20 Pages
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LTC2645
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.
LTC2645-L12/-L10/-L8 (VFS = 2.5V)
SYMBOL PARAMETER
CONDITIONS
Reference Input
VREF
Input Voltage Range
Resistance
Capacitance
IREF
Reference Current, Power-Down Mode
Reference Output
DAC Powered Down
Output Voltage
Reference Temperature Coefficient
(Note 9)
Output Impedance
Capacitive Load Driving
Short Circuit Current
Digital Inputs (INA, INB, INC, IND, PD)
VIH
Digital Input High Voltage
VIL
Digital Input Low Voltage
ILK
Digital Input Leakage
CIN
Digital Input Capacitance
AC Performance
VCC = 5.5V, REF Shorted to GND
INA/INB/INC/IND = GND to IOVCC
(Note 7)
ts
Settling Time From INA/INB/INC/IND Rising Edge ±0.39% (±1LSB at 8 Bits)
(Note 8)
±0.098% (±1LSB at 10 Bits)
±0.024% (±1LSB at 12 Bits)
Voltage Output Slew Rate
Capacitive Load Driving
Glitch Impulse
At Mid-Scale Transition
DAC-to-DAC Crosstalk
1 DAC Held at FS, 1 DAC Switched 0 to FS
Multiplying Bandwidth
External Reference
en
Output Voltage Noise Density
At f = 1kHz, External Reference
At f = 10kHz, External Reference
At f = 1kHz, Internal Reference
At f = 10kHz, Internal Reference
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
CREF = 0.1µF
MIN
TYP
l
1
l 120
l
160
7.5
0.005
l 1.24 1.25
±10
0.5
10
2.5
l 0.8•IOVCC
l
l
l
7.0
7.4
7.8
1.0
500
2.1
0.9
320
180
160
200
180
35
40
680
730
MAX UNITS
VCC
V
200
kΩ
pF
1.5
µA
1.26
V
ppm/°C
kΩ
µF
mA
V
0.5
V
±1
µA
5
pF
µs
µs
µs
V/µs
pF
nV • s
nV • s
kHz
nV/√Hz
nV/√Hz
nV/√Hz
nV/√Hz
nVP-P
nVP-P
nVP-P
nVP-P
2645f
For more information www.linear.com/LTC2645
5
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