LTC2379-18
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, VDD = 2.5V, OVDD = 2.5V, VCM = 2.5V,
REF = 5V, fSMPꢀ = 1.6Msps, unless otherwise noted.
Integral Nonlinearity
vs Output Code
Differential Nonlinearity
vs Output Code
DC Histogram
70000
60000
50000
40000
30000
20000
10000
0
2.0
1.5
1.0
0.8
σ = 0.8
0.6
1.0
0.4
0.5
0.2
0.0
0.0
–0.2
–0.4
–0.6
–0.8
–1.0
–0.5
–1.0
–1.5
–2.0
0
65536
131072
196608
262144
0
65536
131072
196608
262144
131068 131069 131070 131071 131072 131073
OUTPUT CODE
OUTPUT CODE
CODE
237918 G01
237918 G02
237918 G03
THD, Harmonics
32k Point FFT fS = 1.6Msps,
fIN = 2kHz
vs Input Frequency
SNR, SINAD vs Input Frequency
0
–20
105
100
95
–80
–90
SIR = 101.2dꢀ
THD = –120dꢀ
SꢁIAD = 101.1dꢀ
SFDR = 121dꢀ
–40
SIR
–60
–100
–110
–120
–130
–140
THD
2ID
–80
SꢁIAD
–100
–120
–140
–160
–180
90
85
3RD
80
0
100 200 300 400 500 600 700 800
0
25 50 75 100 125 150 175 200
0
25 50 75 100 125 150 175 200
FREQUEICY (kHz)
FREQUEICY (kHz)
FREQUEICY (kHz)
237918 G05
237918 G06
237918 G04
SNR, SINAD vs Input level,
fIN = 2kHz
SNR, SINAD vs Reference
Voltage, fIN = 2kHz
THD, Harmonics vs Reference
Voltage, fIN = 2kHz
102
101
100
99
102.0
101.5
101.0
100.5
100.0
–100
–105
–110
–115
–120
–125
–130
–135
–140
SIR
SꢁIAD
THD
SIR
3RD
SꢁIAD
98
2ID
97
96
95
2.5
3.0
3.5
4.0
4.5
5.0
–40
–30
–20
–10
0
2.5
3.0
3.5
4.0
4.5
5.0
REFEREICE VOLTAGE (V)
ꢁIPUT LEVEL (dꢀ)
REFEREICE VOLTAGE (V)
237918 G16
237918 G07
237918 G17
237918fa
6
Linear Systems [ Linear Systems ]
