Datasheet

LTC2654
11
2654f
TYPICAL PERFORMANCE CHARACTERISTICS
Load Regulation Current Limiting
Headroom at Rails
vs Output Current
Offset Error vs Temperature Zero-Scale Error vs Temperature Gain Error vs Temperature
Integral Nonlinearity (INL) Differential Nonlinearity (DNL) Settling to ±1LSB (12-Bit) Rising
LTC2654-12
LTC2654-16
CODE
0
INL (LSB)
1.0
0.5
0
–0.5
–1.0
1024 3072
2654 G15
40952048
V
CC
= 5V
V
REF
= 2.048V
CODE
0
DNL (LSB)
1.0
0.5
0
–0.5
–1.0
1024 3072
2654 G16
40952048
V
CC
= 3V
V
REF
= 1.25V
CS/LD
5V/DIV
V
OUT
1mV/DIV
2654 G17
2µs/DIV
4.6µs
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
I
OUT
(mA)
INTERNAL REF
CODE = MID-SCALE
–50
$V
OUT
(V)
10
4
6
8
2
0
–4
–2
–6
–8
–10
–30–40 4030
2654 G18
50–20 –10 0 10 20
V
CC
= 5V (LTC2654-H)
V
CC
= 3V (LTC2654-L)
I
OUT
(mA)
INTERNAL REF
CODE = MID-SCALE
–50
$V
OUT
(V)
0.20
0.05
0.10
0.15
0
–0.05
–0.10
–0.15
–0.20
–30–40 4030
2654 G19
50–20 –10 0 10 20
V
CC
= 5V (LTC2654-H)
V
CC
= 3V (LTC2654-L)
I
OUT
(mA)
0
V
OUT
(V)
5.0
3.5
4.0
4.5
3.0
2.5
2.0
1.0
0.5
1.5
0
2198
2654 G20
1034567
5V (LTC2654-H) SOURCING
3V (LTC2654-L) SOURCING
5V (LTC2654-H) SINKING
3V (LTC2654-H) SINKING
TEMPERATURE (°C)
–50
OFFSET ERROR (mV)
3
1
2
0
–1
–2
–3
–10–30 110
2654 G21
13010 30 50 70 90
TEMPERATURE (°C)
–50
ZERO-SCALE ERROR (mV)
3.0
2.0
2.5
1.5
1.0
0.5
0
–10–30 110
2654 G22
13010 30 50 70 90
TEMPERATURE (°C)
–50
GAIN ERROR (LSB)
64
32
16
48
0
–32
–16
–48
–64
–10–30 110
2654 G23
13010 30 50 70 90