LTC1662IMS8 Просмотр технического описания (PDF) - Linear Technology
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LTC1662IMS8 Datasheet PDF : 12 Pages
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LTC1662
WU
TI I G CHARACTERISTICS
range, otherwise specifications are at TA = 25°C.
The q denotes the specifications which apply over the full operating temperature
SYMBOL
t5
t6
t7
t9
t11
PARAMETER
CS/LD Pulse Width
LSB SCK High to CS/LD High
CS/LD Low to SCK High
SCK Low to CS/LD Low
CS/LD High to SCK Positive Edge
SCK Frequency
CONDITIONS
(Note 6)
(Note 6)
(Note 6)
(Note 6)
(Note 6)
Square Wave (Note 6)
MIN
q 150
q 50
q 30
q0
q 30
q
TYP
MAX UNITS
30
ns
3
ns
– 14
ns
–5
ns
0
ns
10
MHz
Note 1: Absolute maximum ratings are those values beyond which the life
of a device may be impaired.
Note 2: Nonlinearity and monotonicity are defined and tested at VCC = 5V,
VREF = 4.096V, from code 20 to code 1023. See Figure 2.
Note 3: Digital inputs at 0V or VCC.
Note 4: Load is 10kΩ in parallel with 100pF.
Note 5: VCC = VREF = 5V. DAC switched between 0.1VFS and 0.9VFS; i.e.,
codes k = 102 and k = 922.
Note 6: Guaranteed by design, not subject to test.
Note 7: One DAC output loaded.
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current vs Temperature
5.0
4.5 VREF = VCC
CODE = 1023
4.0
3.5
5.5V 4.5V
3.0
2.5
2.0
1.5
3.6V VCC = 2.7V
1.0
0.5
0
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
1662 G01
Supply Current vs Logic Input
Voltage
1.0
0.9
VCC = 5V
ALL DIGITAL INPUTS
0.8
SHORTED TOGETHER
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0 1.5 1 1.5 2 2.5 3 3.5 4 4.5 5
LOGIC INPUT VOLTAGE (V)
1662 G04
4
Total Supply-Plus-Reference
Operating Current
5.0
4.5
5.5V
4.0
4.5V
3.5
3.0
2.5
3.6V
2.0
VCC = 2.7V
1.5
1.0
0.5
VREF = VCC
CODE = 1023
0
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
1662 G02
Supply Current vs Clock
Frequency
1000
CS/LD = LOGIC LOW
CODE = 0
100
VCC = 5V
VCC = 3V
10
1
10 100 1k 10k 100k 1M 10M 100M
FREQUENCY (Hz)
1662 G03
Integral Nonlinearity (INL)
4
3
2
1
0
–1
–2
–3
–4
0
256
512
768
1023
CODE
1662 G05
Differential Nonlinearity (DNL)
0.75
0.60
0.40
0.20
0
–0.20
–0.40
–0.60
–0.75
0
256
512
768
1023
CODE
1662 G06
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