Datasheet

LTC2655
14
2655f
TYPICAL PERFORMANCE CHARACTERISTICS
Offset Error vs Reference Input
REFERENCE VOLTAGE (V)
0.5
OFFSET ERROR (mV)
2.0
–1.0
–1.5
–0.5
1.5
1.0
0.5
0
–2
21 1.5
2655 G24
2.5
V
CC
= 5V
OFFSET ERROR OF 4 CHANNELS
T
A
= 25°C unless otherwise noted.
LTC2655
Supply Current vs Temperature I
CC
Shutdown vs Temperature
Multiplying Bandwidth
TEMPERATURE (°C)
–50
SUPPLY CURRENT (mA)
3.0
2.0
2.5
1.5
1.0
503010 1109070–30 –10
2655 G28
130
LTC2655-H
V
CC
= 5V, CODE = MS
INTERNAL REFERENCE
LTC2655-L
V
CC
= 3V, CODE = MS
INTERNAL REFERENCE
TEMPERATURE (°C)
–50
I
CC
SHUTDOWN (µA)
5
3
4
2
1
0
503010 1109070–30 –10
2655 G29
130
LTC2655-H
V
CC
= 5V
LTC2655-L
V
CC
= 3V
FREQUENCY (Hz)
AMPLITUDE (dB)
2655 G30
8
2
0
4
6
–2
–4
–6
–8
–10
–12
1k 100k 1M10k
V
S
= 5V
V
REF(DC)
= 2V
V
REF(AC)
= 0.2V
P-P
CODE = FULL-SCALE
Gain Error vs Reference Input I
CC
Shutdown vs V
CC
Supply Current vs Logic Voltage
REFERENCE VOLTAGE (V)
0.5
GAIN ERROR (LSB)
64
–32
–48
–16
48
32
16
0
–64
21 1.5
2655 G25
2.5
LTC2655-16
V
CC
= 5.5V
GAIN ERROR OF 4 CHANNELS
V
CC
(V)
2.5
I
CC
(nA)
450
150
100
50
200
400
350
300
250
0
53.53 4.54
2655 G26
5.5
LOGIC VOLTAGE (V)
0
I
CC
(mA)
2.6
1.6
2.4
2.2
2.0
1.8
1.4
2143
2655 G27
SWEEP SCL AND SDA
BETWEEN
0V AND V
CC
V
CC
= 3V
(LTC2655-L)
V
CC
= 5V
(LTC2655-H)
5
Large-Signal Response Mid-Scale Glitch Impulse
2µs/DIV
V
OUT
1V/DIV
2655 G31
V
CC
= 5V, V
REF
= 2.048V
ZERO-SCALE TO FULL-SCALE
2µs/DIV
V
OUT
5mV/DIV
SCL
5V/DIV
2655 G32
LTC2655-H16, V
CC
= 5V
7nV-s TYP
LTC2655-L16, V
CC
= 3V
4nV-s TYP
9TH CLOCK OF
3RD DATA BYTE