Datasheet

6
LTC1854/LTC1855/LTC1856
185456fa
LTC1855 Nonaveraged
4096-Point FFT Plot
LTC1855 Typical INL Curve LTC1855 Typical DNL Curve
TYPICAL PERFOR A CE CHARACTERISTICS
UW
CODE
–32768
INL (LSB)
0
0.5
1.0
32767
185456 G01
–0.5
–1.0
–2.0
–16384
0
16384
–1.5
2.0
1.5
CODE
–32768
DNL (LSB)
0
0.5
1.0
32767
185456 G02
–0.5
–1.0
–2.0
–16384
0
16384
–1.5
2.0
1.5
LTC1856 Nonaveraged
4096-Point FFT Plot
LTC1856 Typical INL Curve LTC1856 Typical DNL Curve
LTC1854 Nonaveraged
4096-Point FFT PlotLTC1854 Typical DNL CurveLTC1854 Typical INL Curve
CODE
–8192
INL (LSB)
0
0.4
0.2
0.6
8191
185455 G04
–0.2
–0.6
–0.4
–1
–4096
0
4096
–0.8
1
0.8
CODE
–8192
DNL (LSB)
0
0.4
0.2
0.6
8191
185456 G05
–0.2
–0.4
–1
–4096
0
4096
–0.6
–0.8
1
0.8
FREQUENCY (kHz)
01525 50
185456 G06
510
20
30 40
45
35
MAGNITUDE (dB)
–60
–40
–20
0
–80
–100
–70
–50
–30
–10
–90
–110
–130
–120
f
SAMPLE
= 100kHz
f
IN
= 1kHz
SINAD = 83dB
THD = –95dB
CODE
–2048
–1.0
INL (LSB)
–0.8
–0.4
–0.2
0
1.0
0.4
–1024
0
185456 G07
–0.6
0.6
0.8
0.2
1024
2047
CODE
–2048
–1.0
DNL (LSB)
–0.8
–0.4
–0.2
0
1.0
0.4
–1024
0
185456 G08
–0.6
0.6
0.8
0.2
1024
2047
FREQUENCY (kHz)
0
MAGNITUDE (dB)
–70
–30
0
40
185456 G09
–90
–110
–80
–50
–10
–20
–40
–60
–100
–120
–130
10
20
30
50
f
SAMPLE
= 100kHz
f
IN
= 1kHz
SINAD = 73.6dB
THD = –102dB
FREQUENCY (kHz)
01525 50
185456 G03
510
20
30 40
45
35
MAGNITUDE (dB)
–60
–40
–20
0
–80
–100
–70
–50
–30
–10
–90
–110
–130
–120
f
SAMPLE
= 100kHz
f
IN
= 1kHz
SINAD = 87dB
THD = –101dB