
LTC1661
5
1661fa
TYPICAL PERFORMANCE CHARACTERISTICS
Load Regulation
vs Output Current
Load Regulation
vs Output Current
Large-Signal Step Response
Minimum VOUT vs Load Current
(Output Sinking)
Integral Nonlinearity (INL)
Mid-Scale Output Voltage
vs Load Current
Differential Nonlinearity (DNL)
Mid-Scale Output Voltage
vs Load Current
Minimum Supply Headroom vs
Load Current (Output Sourcing)
CODE
0
256
512
768
1023
LSB
1661 G01
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
CODE
0
256
512
768
1023
LSB
1661 G02
0.75
–0.75
0.60
0.40
0.20
0
–0.20
–0.40
–0.60
0
2
4
6
8
10
V CC
–
V
OUT
(mV)
1661 G03
1400
1200
1000
800
600
400
200
0
–55°C
25°C
125°C
VREF = 4.096V
VOUT < 1LSB
CODE = 1023
|I
OUT
| (mA) (Sourcing)
|I
OUT
| (mA) (SINKING)
0
2
4
6
8
10
V OUT
(mV)
1661 G04
1400
1200
1000
800
600
400
200
0
–55°C
25°C
125°C
VCC = 5V
CODE = 0
IOUT (mA)
–30
–20
–10
0
10
20
30
V OUT
(V)
1661 G05
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
VCC = 4.5V
VCC = 5V
VCC = 5.5V
VREF = VCC
CODE = 512
SINK
SOURCE
IOUT (mA)
–15
–4
–8
–12
0
4
8
12 15
V OUT
(V)
1661 G06
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
VCC = 2.7V
VCC = 3V
VCC = 3.6V
VREF = VCC
CODE = 512
SINK
SOURCE
IOUT (mA)
–2
–1
0
1
2
V
OUT
(LSB)
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
1661 G07
VCC = VREF = 5V
CODE = 512
SINK
SOURCE
IOUT (A)
–500
0
500
V
OUT
(LSB)
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
1661 G08
SINK
SOURCE
VCC = VREF = 3V
CODE = 512
TIME (s)
0
20
40
60
80
100
V OUT
(V)
1661 G09
5
4
3
2
1
0
VCC = VREF = 5V
10% TO
90% STEP
CODE = 102
CODE = 922