Datasheet

6
LTC1864L/LTC1865L
sn18645L 18645Lfs
REFERENCE VOLTAGE (V)
0
CHANGE IN OFFSET (LSB)
4
1864L/65L G10
1
2
3
20
15
10
5
0
–5
–10
–15
–20
f
S
= 150kHz
T
A
= 25°C
V
CC
= 3.6V
REFERENCE VOLTAGE (V)
0
GHANGE IN GAIN ERROR (LSB)
4
1864L/65L G12
1
2
3
f
S
= 150kHz
T
A
= 25°C
V
CC
= 3.6V
TEMPERATURE (°C)
–50 25 75
1864L/65L G11
–25 0
50 100 125
CHANGE IN OFFSET (LSB)
5
4
3
2
1
0
–1
–2
–3
–4
–5
5
4
3
2
1
0
–1
–2
–3
–4
–5
V
CC
= 2.7V
V
REF
= 2.5V
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
TEMPERATURE (°C)
–50 25 75
1864L/65L G13
1864L/65L G14
–25 0
50 100 125
CHANGE IN GAIN ERROR (LSB)
5
4
3
2
1
0
–1
–2
–3
–4
–5
THD (dB)
1864L/65L G15

INPUT FREQUENCY (kHz)
1
SINAD (dB)
100
90
80
70
60
50
40
30
20
10
0
10 100
1864L/65L G16
INPUT FREQUENCY (kHz)
1 10 100
1864L/65L G17
SFDR (dB)
100
90
80
70
60
50
40
30
20
10
0
INPUT FREQUENCY (kHz)
110100
1864L/65L G18

30 31 33 35 37 39 41 4332 34 36 38 40 42 44
FREQUENCY
1200
1000
800
600
400
200
0
CODE
V
CC
= 2.7V
V
REF
= 2.5V
f
S
= 125kHz
T
A
= 25°C
V
CC
= 3V
V
IN
= 0dB
V
REF
= 3V
f
S
= 125kHz
T
A
= 25°C
V
CC
= 3V
V
IN
= 0dB
V
REF
= 3V
f
S
= 125kHz
T
A
= 25°C
V
CC
= 3V
V
IN
= 0dB
V
REF
= 3V
SNR
SINAD
0
7
52
45
20
00
169
407
1040
648
152
291
576
689
INPUT FREQUENCY (kHz)
0
AMPLITUDE (dB)
60
5101520253540505565
30 45
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
f
S
= 125kHz
T
A
= 25°C
V
CC
= 3V
V
IN
= 0.946045kHz
V
REF
= 3V
TYPICAL PERFOR A CE CHARACTERISTICS
UW
SINAD vs Input Frequency
THD vs Input Frequency
SFDR vs Input Frequency
Change in Offset vs
Reference Voltage
Change in Offset vs Temperature
Change in Gain Error vs
Reference Voltage
Change in Gain Error vs
Temperature
Histogram of 4096 Conversions
of a DC Input Voltage
4096 Point FFT Nonaveraged