LTC2668 查看數據表（PDF） - Linear Technology
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LTC2668 Datasheet PDF : 28 Pages
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LTC2668
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. AVP = 5V, OVP = 5V, V+ = 15V, V– = –15V, VREF = 2.5V, VOUT unloaded
unless otherwise specified.
SYMBOL PARAMETER
Digital I/O
VOH
Digital Output High Voltage
VOL
Digital Output Low Voltage
IOZ
Digital Hi-Z Output Leakage
ILK
Digital Input Leakage
CIN
Digital Input Capacitance
(Note 9)
OVP = 2.7V to AVP
VIH
Digital Input High Voltage
VIL
Digital Input Low Voltage
OVP = 1.71V to 2.7V
VIH
Digital Input High Voltage
VIL
Digital Input Low Voltage
CONDITIONS
MIN
TYP
SDO Pin. Load Current = –100µA
SDO Pin. Load Current = 100µA
OVRTMP Pin. Load Current = 100µA
SDO Pin Leakage Current (CS/LD High)
OVRTMP Pin Leakage Current (Not Asserted)
VIN = GND to OVP
l OVP – 0.2
l
l
l
l
l
l
MAX
UNITS
V
0.2
V
0.2
V
±1
µA
1
µA
±1
µA
8
pF
l 0.8 • OVP
l
l 0.8 • OVP
l
V
0.5
V
V
0.3
V
Timing Characteristics The l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. Digital input low and high voltages are 0V and OVP, respectively.
LTC2668-16/LTC2668-12
SYMBOL PARAMETER
AVP = 4.5V to 5.5V, OVP = 2.7V to AVP
t1
SDI Valid to SCK Setup
t2
SDI Valid to SCK Hold
t3
SCK HIGH Time
t4
SCK LOW Time
t5
CS/LD Pulse Width
t6
LSB SCK High to CS/LD High
t7
CS/LD Low to SCK High
t8
SDO Propagation Delay from SCK Falling Edge
t9
CLR Pulse Width
t10
CS/LD High to SCK Positive Edge
t12
LDAC Pulse Width
t13
CS/LD High to LDAC High or Low Transition
SCK Frequency
t14
TGP High Time (Note 9)
t15
TGP Low Time (Note 9)
CONDITIONS
CLOAD = 10pF
OVP = 4.5V to AVP
OVP = 2.7V to 4.5V
50% Duty Cycle
MIN TYP MAX UNITS
l
6
l
6
l
9
l
9
l 10
l
7
l
7
l
l
l 20
l
7
l 15
l 15
l
l
1
l
1
ns
ns
ns
ns
ns
ns
ns
20
ns
30
ns
ns
ns
ns
ns
50
MHz
µs
µs
2668fa
6
For more information www.linear.com/LTC2668
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