LTC1664_1 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1664_1' PDF : 16 Pages View PDF
TYPICAL PERFOR A CE CHARACTERISTICS
LTC1664
Load Regulation vs Output Current
2 VCC = VREF = 5V
CODE = 512
1.5
1
0.5
0
–0.5
–1
–1.5
–2
SOURCE
SINK
–2
–1
0
1
IOUT (mA)
2
1664 G09
Load Regulation vs Output Current
2 VCC = VREF = 3V
CODE = 512
1.5
1
0.5
0
–0.5
–1
–1.5
–2
SOURCE
SINK
–500
0
IOUT (µA)
500
1664 G10
Large-Signal Step Response
5
VCC = VREF = 5V
10% TO
4
90% STEP
3
2
1
0
0
20
40
60
80 100
TIME (µs)
1664 G05
Midscale Output Voltage
vs Load Current
3 VREF = VCC
2.9 CODE = 512
2.8
2.7
VCC = 5.5V
2.6
2.5
VCC = 5V
2.4
2.3
VCC = 4.5V
2.2
2.1
2
SOURCE
SINK
–30 –20 –10 0 10
IOUT (mA)
20 30
1664 G01
Midscale Output Voltage
vs Load Current
2 VREF = VCC
1.9 CODE = 512
1.8
1.7
VCC = 3.6V
1.6
1.5
VCC = 3V
1.4
1.3
VCC = 2.7V
1.2
1.1
1
SOURCE SINK
–15 –12 – 8 – 4 0 4 8
IOUT (mA)
12 15
1664 G02
Supply Current vs Logic Input
Voltage
1.2
ALL DIGITAL INPUTS
SHORTED TOGETHER
1.0
0.8
0.6
0.4
0.2
0
0
1
2
3
4
5
LOGIC INPUT VOLTAGE (V)
1664 G12
Minimum VOUT vs
Load Current (Output Sinking)
1400
VCC = 5V
1200 CODE = 0
125°C
1000
800
25°C
600
–55°C
400
Minimum Supply Headroom vs
Load Current (Output Sourcing)
1400
1200
VREF = 4.096V
∆VOUT < 1LSB
CODE = 1023
1000
125°C
800
25°C
600
–55°C
400
200
200
0
0
2
4
6
8
10
| | IOUT (mA) (Sinking)
1664 G04
0
0
2
4
6
8
10
| | IOUT (mA) (Sourcing)
1664 G03
5
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