LTC2379-18
REF = 5V, f
SMPL
= 1.6Msps, unless otherwise noted.
Integral Nonlinearity
vs Output Code
2.0
1.5
1.0
0.5
0.0
–0.5
–1.0
–1.5
–2.0
0
65536
131072
196608
OUTPUT CODE
262144
237918 G01
TYPICAL PERFORMANCE CHARACTERISTICS
Differential Nonlinearity
vs Output Code
1.0
0.8
0.6
DNL ERROR (LSB)
0.4
T
A
= 25°C, V
DD
= 2.5V, OV
DD
= 2.5V, V
CM
= 2.5V,
DC Histogram
70000
60000
50000
COUNTS
40000
30000
20000
10000
0
σ
= 0.8
INL ERROR (LSB)
0.2
0.0
–0.2
–0.4
–0.6
–0.8
–1.0
0
65536
131072
196608
OUTPUT CODE
262144
237918 G02
131068 131069 131070 131071 131072 131073
CODE
237918 G03
32k Point FFT f
S
= 1.6Msps,
f
IN
= 2kHz
0
–20
–40
AMPLITUDE (dBFS)
–60
–80
–100
–120
–140
–160
–180
0
100 200 300 400 500 600 700 800
FREQUENCY (kHz)
237918 G04
SNR, SINAD vs Input Frequency
105
–80
–90
SNR
HARMONICS, THD (dBFS)
–100
THD, Harmonics
vs Input Frequency
SNR = 101.2dB
THD = –120dB
SINAD = 101.1dB
SFDR = 121dB
SNR, SINAD (dBFS)
100
95
SINAD
90
THD
–110
2ND
–120
–130
–140
85
3RD
0
25
50
75 100 125 150 175 200
FREQUENCY (kHz)
237918 G06
80
0
25
50
75 100 125 150 175 200
FREQUENCY (kHz)
237918 G05
SNR, SINAD vs Input level,
f
IN
= 2kHz
102.0
102
101
101.5
SNR, SINAD (dBFS)
SNR
101.0
SINAD
SNR, SINAD (dBFS)
SNR, SINAD vs Reference
Voltage, f
IN
= 2kHz
–100
–105
HARMONICS, THD (dBFS)
–110
–115
–120
–125
–130
–135
2.5
3.0
3.5
4.0
4.5
REFERENCE VOLTAGE (V)
5.0
237918 G16
THD, Harmonics vs Reference
Voltage, f
IN
= 2kHz
100
SNR
99
SINAD
98
97
96
THD
3RD
2ND
100.5
100.0
–40
95
–30
–20
–10
INPUT LEVEL (dB)
237918 G07
0
–140
2.5
3.0
3.5
4.0
4.5
REFERENCE VOLTAGE (V)
5.0
237918 G17
237918fa
6
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
