LTC1664
TYPICAL PERFOR A CE CHARACTERISTICS
Load Regulation vs Output Current
2
1.5
1
∆V
OUT
(LSB)
∆V
OUT
(LSB)
V
CC
= V
REF
= 5V
CODE = 512
0
–0.5
–1
–1.5
–2
–2
SOURCE
–1
0
I
OUT
(mA)
SINK
1
2
1664 G09
0
–0.5
–1
–1.5
–2
–500
SOURCE
0
I
OUT
(µA)
SINK
V
OUT
(V)
0.5
Midscale Output Voltage
vs Load Current
3
2.9
2.8
2.7
V
OUT
(V)
V
REF
= V
CC
CODE = 512
V
CC
= 5.5V
V
OUT
(V)
1.7
1.6
1.5
1.4
1.3
1.2
1.1
V
CC
= 3.6V
V
CC
= 3V
SUPPLY CURRENT (mA)
2.6
2.5
2.4
2.3
2.2
2.1
2
–30
–20
SOURCE
–10
SINK
20
30
1664 G01
V
CC
= 5V
V
CC
= 4.5V
0
10
I
OUT
(mA)
Minimum V
OUT
vs
Load Current (Output Sinking)
1400
1200
1000
800
25°C
600
–55°C
400
200
0
0
2
V
CC
= 5V
CODE = 0
1400
125°C
1200
1000
V
CC
– V
OUT
(mV)
V
OUT
(mV)
U W
|
|
Load Regulation vs Output Current
2
1.5
1
0.5
3
Large-Signal Step Response
5
V
CC
= V
REF
= 5V
10% TO
90% STEP
V
CC
= V
REF
= 3V
CODE = 512
4
2
1
0
500
1664 G10
0
20
40
60
TIME (µs)
80
100
1664 G05
Midscale Output Voltage
vs Load Current
2
1.9
1.8
V
REF
= V
CC
CODE = 512
1.2
1.0
0.8
0.6
0.4
0.2
SOURCE
–8
SINK
8
12 15
1664 G02
Supply Current vs Logic Input
Voltage
ALL DIGITAL INPUTS
SHORTED TOGETHER
V
CC
= 2.7V
1
–15 –12
–4
0
4
I
OUT
(mA)
0
0
1
2
3
4
LOGIC INPUT VOLTAGE (V)
5
1664 G12
Minimum Supply Headroom vs
Load Current (Output Sourcing)
V
REF
= 4.096V
∆V
OUT
< 1LSB
CODE = 1023
125°C
25°C
–55°C
400
200
0
800
600
4
6
I
OUT
(mA) (Sinking)
8
10
1664 G04
0
2
|
4
6
I
OUT
(mA) (Sourcing)
|
8
10
1664 G03
5
LINER [ LINEAR TECHNOLOGY ]
