Datasheet

LTC2378-16
6
237816f
Typical perForMance characTerisTics
32k Point FFT f
S
= 1Msps,
f
IN
= 2kHz SNR, SINAD vs Input Frequency
THD, Harmonics
vs Input Frequency
SNR, SINAD vs Input level,
f
IN
= 2kHz
SNR, SINAD vs Reference
Voltage, f
IN
= 2kHz
THD, Harmonics vs Reference
Voltage, f
IN
= 2kHz
Integral Nonlinearity
vs Output Code
Differential Nonlinearity
vs Output Code DC Histogram
OUTPUT CODE
0 16384 32768 49152 65536
–1.0
INL ERROR (LSB)
0.0
0.2
0.4
0.6
0.8
–0.4
–0.2
–0.6
–0.8
1.0
237816 G01
FREQUENCY (kHz)
0 100 200 300 500400
–180
AMPLITUDE (dBFS)
–60
–40
–20
–80
–100
–120
–140
–160
0
237816 G04
SNR = 97.2dB
THD = –121.7dB
SINAD = 97.1dB
SFDR = 128dB
OUTPUT CODE
–0.5
DNL ERROR (LSB)
0.4
0.3
0.2
0.1
0.0
–0.4
–0.3
–0.2
–0.1
0.5
237816 G02
0 16384 32768 49152 65536
CODE
3268032679326783267732676
0
COUNTS
40000
20000
100000
60000
120000
80000
140000
σ = 0.15
237816 G03
T
A
= 25°C, V
DD
= 2.5V, OV
DD
= 2.5V, V
CM
= 2.5V,
REF = 5V, f
SMPL
= 1Msps, unless otherwise noted.
INPUT LEVEL (dB)
SNR, SINAD (dBFS)
98.0
237816 G07
96.0
96.5
97.0
97.5
–40 –30 –20 –10 0
SNR
SINAD
REFERENCE VOLTAGE (V)
SNR, SINAD (dBFS)
98.0
97.0
97.5
237816 G08
94.0
94.5
95.0
95.5
96.0
96.5
2.5 3.0 3.5 4.0 4.5 5.0
SINAD
SNR
HARMONICS, THD (dBFS)
–100
237816 G09
–150
–145
–140
–135
–130
–125
–120
–115
–110
–105
3RD
REFERENCE VOLTAGE (V)
2.5 3.0 3.5 4.0 4.5 5.0
2ND
THD
FREQUENCY (kHz)
SNR, SINAD (dBFS)
98.0
97.5
237816 G05
93.0
93.5
95.0
94.5
94.0
97.0
96.5
96.0
95.5
0 25 50 75 150125100 200175
SNR
SINAD
FREQUENCY (kHz)
HARMONICS, THD (dBFS)
–80
237816 G06
–140
–130
–120
–110
–100
–90
0 25 50 75 150125100 175 200
3RD
2ND
THD