Datasheet
LTC2635
16
2635fb
typical perFormance characteristics
Mulitplying Bandwidth Noise Voltage vs Frequency
Gain Error vs Reference Input
0.1Hz to 10Hz Voltage Noise
DAC-to-DAC Crosstalk (Dynamic) Gain Error vs Temperature
LTC2635
T
A
= 25°C, unless otherwise noted.
FREQUENCY (Hz)
dB
2635 G31
2
0
–16
–14
–12
–10
–8
–6
–4
–2
–18
1k 100k 1M10k
V
CC
= 5V
V
REF(DC)
= 2V
V
REF(AC)
= 0.2V
P-P
CODE = FULL-SCALE
FREQUENCY (Hz)
100
NOISE VOLTAGE (nV/√Hz)
500
400
300
200
100
0
1k 100k
2634 G32
1M10k
V
CC
= 5V
CODE = MID-SCALE
INTERNAL REF
LTC2635-H
LTC2635-L
REFERENCE VOLTAGE (V)
1
GAIN ERROR (%FSR)
1.0
0.8
0.6
0.4
–0.6
–0.8
–0.4
–0.2
0.2
0
–1.0
1.5 54.54
2635 G33
5.52 2.5 3 3.5
V
CC
= 5.5V
GAIN ERROR OF 4 CHANNELS
1s/DIV
10µV/DIV
2635 G34
V
CC
= 5V, V
FS
= 2.5V
CODE = MID-SCALE
INTERNAL REF
TEMPERATURE (°C)
–50
GAIN ERROR (%FSR)
1.0
0.5
0
–0.5
–1.0
–25 125100755025
2635 G36
1500
2µs/DIV
1 DAC
SWITCH 0-FS
2V/DIV
V
OUT
2mV/DIV
SCL
5V/DIV
2635 G35
9th CLOCK OF 3rd
DATA BYTE
LTC2635-H12, V
CC
= 5V
3nV • s TYPICAL C
REF
= 0.1µF