LTC1668IG データシートの表示（PDF） - Linear Technology
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LTC1668IG Datasheet PDF : 24 Pages
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LTC1666/LTC1667/LTC1668
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VDD = 5V, VSS = – 5V, LADCOM = AGND = DGND = 0V, IOUTFS = 10mA.
SYMBOL PARAMETER
Analog Output
IOUTFS
Full-Scale Output Current
Output Compliance Range
Output Resistance; RIOUT A, RIOUT B
Output Capacitance
Reference Output
Reference Voltage
Reference Output Drift
Reference Output Load Regulation
CONDITIONS
IFS = 10mA
IOUT A, B to LADCOM
REFOUT Tied to IREFIN Through 2kΩ
ILOAD = 0mA to 5mA
LTC1666/LTC1667/LTC1668
MIN
TYP
MAX
UNITS
q1
10
mA
q –1
1
V
q 0.7
1.1
1.5
kΩ
5
pF
2.475
2.5
25
6
2.525
V
ppm/°C
mV/mA
Reference Input
Reference Small-Signal Bandwidth
Power Supply
IFS = 10mA, CCOMP1 = 0.1µF
20
kHz
VDD
Positive Supply Voltage
q 4.75
5
VSS
Negative Supply Voltage
IDD
Positive Supply Current
IFS = 10mA, fCLK = 25Msps, fOUT = 1MHz
q –4.75
–5
q
3
ISS
Negative Supply Current
IFS = 10mA, fCLK = 25Msps, fOUT = 1MHz
q
33
PDIS
Power Dissipation
IFS = 10mA, fCLK = 25Msps, fOUT = 1MHz
180
IFS = 1mA, fCLK = 25Msps, fOUT = 1MHz
85
Dynamic Performance (Differential Transformer Coupled Output, 50Ω Double Terminated, Unless Otherwise Noted)
fCLOCK
tS
Maximum Update Rate
Output Settling Time
To 0.1% FSR
q 50
75
20
tPD
Output Propagation Delay
8
Glitch Impulse
Single Ended
15
Differential
5
5.25
V
–5.25
V
5
mA
40
mA
mW
mW
Msps
ns
ns
pV-s
pV-s
tr
Output Rise Time
tf
Output Fall Time
iNO
Output Noise
Digital Inputs
4
ns
4
ns
50
pA/√Hz
VIH
VIL
IIN
CIN
tDS
tDH
tCLKH
tCLKL
Digital High Input Voltage
Digital Low Input Voltage
Digital Input Current
Digital Input Capacitance
Input Setup Time
Input Hold Time
Clock High Time
Clock Low Time
q 2.4
V
q
0.8
V
q
±10
µA
5
pF
q8
ns
q4
ns
q5
ns
q8
ns
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: For the LTC1666, ±1LSB = ±0.024% of full scale;
for the LTC1667, ±1LSB = ±0.006% of full scale = ±61ppm of full scale;
for the LTC1668, ±1LSB = ±0.0015% of full scale = ±15.3ppm of full scale.
4
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