Datasheet

LTC1863L/LTC1867L
6
1863l7lfc
TYPICAL PERFORMANCE CHARACTERISTICS
(LTC1867L)
(LTC1863L/ LTC1867L)
f
SAMPLE
(ksps)
1
500
SUPPLY CURRENT (μA)
600
700
800
10 100 1000
1863L7L G09
400
300
200
100
V
DD
= 2.7V
INPUT FREQUENCY (kHz)
1
–20
AMPLITUDE (dB)
–40
–60
–100
10 100
1863L7L G07
–80
–30
–50
–90
–70
V
DD
= 3V
INTERNAL REF
f
SAMPLE
= 175ksps
THD
SFDR
RIPPLE FREQUENCY (kHz)
1
–60
POWER SUPPLY FEEDTHROUGH (dB)
–40
–20
10 100 1000
1863L7L G08
–80
–70
–50
–30
–90
–100
V
DD
= 3V
f
SAMPLE
= 175ksps
V
RIPPLE
= 10mV
P-P
Power Supply Feedthrough
vs Ripple Frequency
Supply Current vs f
SAMPLE
(LTC1863L/LTC1867L)
Total Harmonic Distortion
vs Input Frequency
Supply Current vs Supply Voltage Supply Current vs Temperature
Histogram for 4096 Conversions
(LTC1867L)
SUPPLY VOLTAGE (V)
2.7
600
SUPPLY CURRENT (μA)
700
800
900
1000
1200
3 3.3
1963L7L G10
3.6
1100
f
SAMPLE
= 175ksps
TEMPERATURE (°C)
–50
500
SUPPLY CURRENT (μA)
750
1000
1250
1500
–25 0 25 50
1863L7L G11
75 100
3.6V
DD
3.3V
DD
2.7V
DD
3V
DD
f
SAMPLE
= 175ksps
INTERNAL REF
CODE
20
7
0
COUNTS
200
400
600
800
1200
22
24 26 28
1863L7L G12
3021
23
25 27 29 31
1000
58
465
1044
895
830
261
23
9
1
170
333
V
DD
= 2.7V
INTERNAL REF
LOAD CURRENT (mA)
0
2.495
2.500
2.510
1.5
1863L7L G13
2.490
2.485
0.5 1 2
2.480
2.475
2.505
REFCOMP (V)
V
DD
= 2.7V
TEMPERATURE (°C)
–50
–10
UNIPOLAR OFFSET (LSB)
–5
0
5
10
–25 0 25 50
1863L7L G14
75 100
BIPOLAR
MODE
UNIPOLAR
MODE
V
DD
= 2.7V
f
SAMPLE
= 175ksps
EXT V
REF
= 1.25V
TEMPERATURE (°C)
–50
–15
UNIPOLAR OFFSET (LSB)
–10
–5
0
5
15
–25
02550
1863L7L G15
75 100
10
V
DD
= 2.7V
f
SAMPLE
= 175ksps
EXT V
REF
= 1.25V
UNIPOLAR/BIPOLAR
REFCOMP vs Load Current
Offset Drift (LTC1867L)
vs Temperature
Gain Error Drift (LTC1867L)
vs Temperature