LTC2634
15
2634fb
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
LTC2634
T
A
= 25°C, unless otherwise noted
FREQUENCY (Hz)
dB
2636 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
2636 G32
1M10k
V
CC
= 5V
CODE = MID-SCALE
INTERNAL REF
LTC2634-H
LTC2634-L
1s/DIV
10μV/DIV
2634 G34
V
CC
= 5V, V
FS
= 2.5V
CODE = MID-SCALE
INTERNAL REF
2μs/DIV
V
OUT
1mV/DIV
1 DAC
SWITCH 0-FS
2V/DIV
CS/LD
5V/DIV
2634 G35
LTC2634-H12, V
CC
= 5V
2.4nV•s TYP
C
REF
= 0.1μF
TEMPERATURE (°C)
–50
GAIN ERROR (%FSR)
1.0
0.5
0
–0.5
–1.0
–25 125100755025
2634 G36
1500
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
2634 G33
5.52 2.5 3 3.5
V
CC
= 5.5V
GAIN ERROR OF 4 CHANNELS
