Datasheet

LTC2389-16
7
238916f
DC Histogram (Near Full-Scale)
Internal Reference Output
vs Temperature
32k Point FFT f
SMPL
= 2.5Msps,
f
IN
= 2kHz
SNR, SINAD vs Input Frequency
Integral Nonlinearity
vs Output Code
Differential Nonlinearity
vs Output Code DC Histogram (Zero-Scale)
THD, Harmonics vs Input Frequency
SNR, SINAD vs Input Level,
f
IN
= 2kHz
typical perFormance characteristics
T
A
= 25°C, V
DD
= 5V, OV
DD
= 2.5V, V
REF
= 4.096V
External Reference, Fully Differential Range (PD/FD = 0V), V
CM
= 2.048V, f
SMPL
= 2.5Msps, unless otherwise noted.
OUTPUT CODE
INL ERROR (LSB)
0
238916 G01
0.2
0.4
0.6
0.8
–0.2
–0.8
–1.0
–0.4
1.0
–0.6
INTERNAL REF
EXTERNAL REF
0 3276816384 49152 65536
OUTPUT CODE
0
DNL ERROR (LSB)
0.1
0.2
0.3
0.4
0
–0.1
3276816384 49152 65536
–0.4
–0.5
–0.2
0.5
–0.3
238916 G02
INTERNAL REF
EXTERNAL REF
FREQUENCY (kHz)
0
AMPLITUDE (dBFS)
–60
–40
–20
–80
–100
500250 750 1000 1250
–160
–180
–120
0
–140
238916 G06
SNR = 96.0dB
THD = –116dB
SINAD = 96.0dB
SFDR = 117dB
CODE
–2 0 1
COUNTS
40000
0
80000
120000
160000
200000
280000
240000
–1 2
238916 G03
CODE
32762 32764 32765
COUNTS
40000
0
80000
120000
160000
200000
280000
240000
32763 32766
238916 G04
–40 –30 –20 0
–10
INPUT LEVEL (dB)
SNR, SINAD (dB)
96.0
97.0
95.5
95.0
96.5
238916 G09
SNR
SINAD
–55 –15
25
45 125
–35 5
65
85
105
TEMPERATURE (°C)
REFERENCE OUTPUT (V)
4.093
4.097
4.091
4.096
4.092
4.090
4.089
4.095
4.094
238916 G05
T
C
= 8ppm/°C
FREQUENCY (kHz)
0
87
SNR, SINAD (dB)
89
91
93
12.5
25
37.5 50 7562.5 87.5
95
97
88
90
92
94
96
100
238916 G07
SINAD
SNR
FREQUENCY (kHz)
0
–130
THD, HARMONICS (dB)
–120
–110
–100
12.5
25
37.5 50 7562.5 87.5
–90
–85
–125
–115
–105
–95
100
238916 G08
THD
2ND
3RD