LTC1257CN8-PBF Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Lista de partido
LTC1257CN8-PBF Datasheet PDF : 12 Pages
| |||
LTC1257
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = TMIN to TMAX. VCC = 4.75V to 15.75V, internal or external reference
(2.475V ≤ VREF ≤ VCC – 2.7V), unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
t5
LOAD Pulse Width
t6
LSB CLK to LOAD
t7
LOAD High to CLK
t8
DOUT Output Delay
CLOAD = 15pF
fCLK
Maximum Clock Frequency
l 150
l
0
l
0
l 35
ns
ns
ns
150
ns
1.4
MHz
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: Guaranteed by design; not subject to test.
Note 3: DAC switched from all 1s to all 0s, and all 0s to all 1s code.
Note 4: Guaranteed with internal VREF or with external VREF range of
2.475V to 12V. Tested at 10V.
TYPICAL PERFORMANCE CHARACTERISTICS
Minimum Supply Voltage
vs Load Current #1
5.0
4.8
VREF = INTERNAL
VOUT = FULL SCALE
4.6 TA = 25°C
4.4
4.2
4.0
3.8
3.6
3.4
3.2
3.0
0.01
0.1
1
10
OUTPUT LOAD CURRENT (mA)
1257 G01
Supply Current
vs Logic Input Voltage
0.59
0.54
VCC = 5V
TA = 25°C
0.49
0.44
0.39
0.34
0
1
2
3
4
5
LOGIC VOLTAGE (V)
1257 G04
4
Minimum Supply Voltage
vs Load Current #2
15.0
14.5
VREF = 10V
VOUT = FULL SCALE
TA = 25°C
14.0
13.5
13.0
12.5
12.0
11.5
11.0
0.01
0.1
1
10
OUTPUT LOAD CURRENT (mA)
1257 G02
Output Swing vs Load Resistance
5.0
4.5
VCC = 5V
4.0
3.5
ZERO SCALE
RL TIED TO VCC
3.0
2.5
FULL SCALE
RL TIED TO GND
2.0
1.5
1.0
0.5
0
10
100
1k
10k
LOAD RESISTANCE (Ω)
1257 G05
Supply Current vs Temperature
0.38
0.37
VCC = 5.25V
0.36
VCC = 5V
0.35
0.34
VCC = 4.75V
0.33
0.32
0.31
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1257 G03
Pull-Down Voltage
vs Output Sink Current Capability
1000
100
10
HOT
COLD
1
ROOM
0.1
1
10
100
OUTPUT SINK CURRENT (µA)
1000
1257 G06
1257fc
Share Link: 