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| LTC2640_15 Datasheet, PDF (6/24 Pages) Linear Technology – Single 12-/10-/8-Bit SPI VOUT DACs with 10ppm/C Reference | |||
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LTC2640
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.
LTC2640-LM12/-LM10/-LM8/-LZ12/-LZ10/-LZ8, LTC2640A-LM12/-LZ12 (VFS = 2.5V)
SYMBOL
Reference Input
IREF
Reference Output
Digital I/O
VIH
VIL
ILK
CIN
AC Performance
tS
en
PARAMETER
Input Voltage Range
Resistance
Capacitance
Reference Current, Power-Down Mode
Output Voltage
Reference Temperature Coefficient
Output Impedance
Capacitive Load Driving
Short-Circuit Current
Digital Input High Voltage
Digital Input Low Voltage
Digital Input Leakage
Digital Input Capacitance
Settling Time
Voltage Output Slew Rate
Capacitance Load Driving
Glitch Impulse
Multiplying Bandwidth
Output Voltage Noise Density
Output Voltage Noise
CONDITIONS
DAC Powered Down
VCC = 5.5V; REF Shorted to GND
VCC = 3.6V to 5.5V
VCC = 2.7V to 3.6V
VCC = 4.5V to 5.5V
VCC = 2.7V to 4.5V
VIN = GND to VCC
(Note 8)
VCC = 3V (Note 9)
±0.39% (±1LSB at 8-Bits)
±0.098% (±1LSB at 10-Bits)
±0.024% (±1LSB at 12-Bits)
At Mid-Scale Transition
External Reference
At f = 1kHz, External Reference
At f = 10kHz, External Reference
At f = 1kHz, Internal Reference
At f = 10kHz, Internal Reference
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 = 0.33µF
MIN
TYP MAX UNITS
l
0
VCC
V
l 160
190
220
kΩ
7.5
pF
l
0.005 0.1
µA
l 1.240
1.250
±10
0.5
10
2.5
1.260
V
ppm/°C
kΩ
µF
mA
l 2.4
l
2
l
l
l
l
V
V
0.8
V
0.6
V
±1
µA
2.5
pF
3.2
µs
3.8
µs
4.1
µs
1
V/µs
500
pF
2.1
nVâ¢s
300
kHz
140
nVâHz
130
nVâHz
160
nVâHz
150
nVâHz
20
µVP-P
20
µVP-P
650
µVP-P
670
µVP-P
2640fc
6
For more information www.linear.com/LTC2640
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