Datasheet

LTC1661
5
1661fa
TYPICAL PERFORMANCE CHARACTERISTICS
Load Regulation
vs Output Current
Load Regulation
vs Output Current Large-Signal Step Response
Minimum V
OUT
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
V
REF
= 4.096V
∆V
OUT
< 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
V
CC
= 5V
CODE = 0
I
OUT
(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
V
CC
= 4.5V
V
CC
= 5V
V
CC
= 5.5V
V
REF
= V
CC
CODE = 512
SINKSOURCE
I
OUT
(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
V
CC
= 2.7V
V
CC
= 3V
V
CC
= 3.6V
V
REF
= V
CC
CODE = 512
SINKSOURCE
I
OUT
(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
V
CC
= V
REF
= 5V
CODE = 512
SINKSOURCE
I
OUT
(µA)
–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
SINKSOURCE
V
CC
= V
REF
= 3V
CODE = 512
TIME (µs)
0 20 40 60 80 100
V
OUT
(V)
1661 G09
5
4
3
2
1
0
V
CC
= V
REF
= 5V
10% TO
90% STEP
CODE = 102
CODE = 922