Datasheet

5
LTC1661
TYPICAL PERFOR A CE CHARACTERISTICS
UW
I
OUT
(mA)
–2 –1 0 1 2
∆V
OUT
(LSB)
2
1.5
1
0.5
0
–0.5
–1
–1.5
–2
1661 G07
V
CC
= V
REF
= 5V
CODE = 512
SINKSOURCE
I
OUT
(µA)
–500 0 500
∆V
OUT
(LSB)
2
1.5
1
0.5
0
–0.5
–1
–1.5
–2
1661 G08
SINKSOURCE
V
CC
= V
REF
= 3V
CODE = 512
Load Regulation vs
Output Current
Load Regulation vs
Output Current
TIME (µs)
0 20406080100
V
OUT
(V)
1661 G09
5
4
3
2
1
0
V
CC
= V
REF
= 5V
10% TO
90% STEP
CODE = 102
CODE = 922
LOGIC INPUT VOLTAGE (V)
012345
SUPPLY CURRENT (mA)
1661 G10
1.0
0.8
0.6
0.4
0.2
0
ALL DIGITAL INPUTS
SHORTED TOGETHER
TEMPERATURE (°C)
–55 –35 –15 5 25 45 65 85 105 125
SUPPLY CURRENT (µA)
1661 G11
150
140
130
120
110
100
90
80
70
60
50
V
CC
= 5.5V
V
REF
= V
CC
CODE = 1023
V
CC
= 4.5V
V
CC
= 3.6V
V
CC
= 2.7V
Large-Signal Step Response
Supply Current vs
Logic Input Voltage Supply Current vs Temperature
TI I G DIAGRA
UWW
D
IN
CS/LD
SCK
A3 A2
1661 TD
A1 X1
X0
t
2
t
9
t
11
t
5
t
7
t
6
t
1
t
3
t
4