Datasheet

LTC2657
13
2657f
Supply Current vs Logic Voltage Supply Current vs Temperature I
CC
Shutdown vs Temperature
Multiplying Bandwidth Large Signal Response Mid-Scale Glitch Impulse
Offset Error vs Reference Input Gain Error vs Reference Input I
CC
Shutdown vs V
CC
TYPICAL PERFORMANCE CHARACTERISTICS
LTC2657, T
A
= 25°C unless otherwise noted.
REFERENCE VOLTAGE (V)
0.5
–2
OFFSET ERROR (mV)
1.5
1
0.5
0
–0.5
–1
–1.5
2
2.51 1.5
2657 G28
2
V
CC
= 5.5V
GAIN ERROR OF 8 CHANNELS
REFERENCE VOLTAGE (V)
0.5
–64
GAIN ERROR (LSB)
48
32
16
0
–16
–32
–48
64
2.51 1.5
2657 G29
2
V
CC
= 5.5V
GAIN ERROR OF 8 CHANNELS
V
CC
(V)
2.5
0
I
CC
(nA)
400
350
300
250
200
150
100
50
450
3.0 5.0 5.53.5 4.0 4.5
2657 G30
LOGIC VOLTAGE (V)
0
2.0
I
CC
(mA)
3.6
3.2
2.8
2.4
4.0
15234
2657 G31
V
CC
= 5V
(LTC2657-H)
V
CC
= 3V
(LTC2657-L)
SWEEP SCL, SDA
BETWEEN OV AND V
CC
TEMPERATURE (°C)
–50
2.0
SUPPLY CURRENT (mA)
3.5
3.0
2.5
4.0
–30 70 90 110 130–10 10 30
2657 G32
50
LTC2657-H
V
CC
= 5V, CODE = MID-SCALE
INTERNAL REFERENCE
LTC2657-L
V
CC
= 3V, CODE = MID-SCALE
INTERNAL REFERENCE
TEMPERATURE (°C)
–50
0
I
CC
SHUTDOWN (µA)
2
1
3
–30 70 90 110 130–10 10 30
2657 G33
50
LTC2657-H
V
CC
= 5V
LTC2657-L
V
CC
= 3V
FREQUENCY (Hz)
1k
–12
AMPLITUDE (dB)
6
4
2
0
–2
–4
–6
–8
–10
8
1M10k
2657 G34
100k
V
CC
= 5V
V
REF(DC)
= 2V
V
REF(AC)
= 0.2V
PP
CODE = FULL-SCALE
2µs/DIV
2657 G35
V
OUT
0.5V/DIV
V
CC
= 5V
V
REF
= 2.048V
ZERO SCALE
TO FULL SCALE
2µs/DIV
2657 G36
SCL
5V/DIV
V
OUT
5mV/DIV
LTC2657-H16,
V
CC
= 5V
7nV-s TYP
LTC2657-L16,
V
CC
= 3V
4nV-s TYP
9th CLOCK OF
3RD DATA BYTE