Datasheet

LTC2656
12
2656fa
Integral Nonlinearity (INL) Differential Nonlinearity (DNL) Settling to ±1LSB (12 Bit) Rising
Load Regulation Current Limiting
Headroom at Rails
vs Output Current
LTC2656-12
Offset Error vs Temperature Zero-Scale Error vs Temperature Gain Error vs Temperature
LTC2656-16
CODE
8
INL (LSB)
0
0.5
4095
2656 G15
–0.5
–1.0
1024
2048
3072
1.0
V
CC
= 5V
V
REF
= 2.048V
CODE
8
DNL (LSB)
0
0.5
4095
2656 G16
–0.5
–1.0
1024
2048
3072
1.0
V
CC
= 5V
V
REF
= 2.048V
V
OUT
1mV/DIV
CS/LD
5V/DIV
2µs/DIV
2656 G17
1/4 SCALE TO
3/4 SCALE STEP
V
CC
= 5V,
V
FS
= 4.095V
R
L
= 2k, C
L
= 200pF
AVERAGE OF 2048
EVENTS
4.6µs
I
OUT
(mA)
–50
∆V
OUT
(mV)
2
6
10
30
2656 G18
–4
0
4
8
–2
–6
–8
–10
–30–40
–10–20
10 20 40
0
50
V
CC
= 5V (LTC2656-H)
V
CC
= 3V (LTC2656-L)
INTERNAL REF.
CODE = MID-SCALE
I
OUT
(mA)
–50
∆V
OUT
(V)
0
0.10
0.20
30
2656 G19
–0.10
–0.05
0.05
0.15
–0.15
–0.20
–30–40
–10–20
10 20 40
0
50
V
CC
= 5V (LTC2656-H)
V
CC
= 3V (LTC2656-L)
INTERNAL REF.
CODE = MID-SCALE
I
OUT
(mA)
0
V
OUT
(V)
3.0
4.0
5.0
8
2656 G20
2.0
1.0
2.5
3.5
4.5
1.5
0.5
0
21
43
6 7 9
5
10
5V SOURCING
5V
SINKING
3V SOURCING
(LTC2656-L)
3V SINKING
(LTC2656-L)
TEMPERATURE (°C)
–50
OFFSET ERROR (mV)
0
0.25
0.50
110
3656 G21
–0.25
–0.50
–1.00
–10
30
70
–30 130
10
50
90
–0.75
1.00
0.75
TEMPERATURE (°C)
–50
0
ZERO-SCALE ERROR (mV)
0.5
1.5
2.0
2.5
–10
30
50 130
2656 G22
1.0
–30 10
70
90
110
3.0
TEMPERATURE (°C)
–50
GAIN ERROR (LSB)
0
16
32
110
2656 G23
–16
–32
–64
–10
30
70
–30 130
10
50
90
–48
64
48
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C unless otherwise noted.