Datasheet

LTC2389-16
9
238916f
Integral Nonlinearity vs Output Code
Differential Nonlinearity
vs Output Code
DC Histogram (Near Zero-Scale)
typical perFormance characteristics
T
A
= 25°C, V
DD
= 5V, OV
DD
= 2.5V, V
REF
= 4.096V
External Reference, Pseudo-Differential Unipolar Range (PD/FD = OV
DD
, OB/2C = OV
DD
), f
SMPL
= 2.5Msps, unless otherwise noted.
DC Histogram (Near Full-Scale)
32k Point FFT f
SMPL
= 2.5Msps,
f
IN
= 2kHz SNR, SINAD vs Input Frequency
THD, Harmonics vs Input Frequency
SNR, SINAD vs Input Level,
f
IN
= 2kHz
SNR, SINAD vs Temperature,
f
IN
= 2kHz
OUTPUT CODE
INL ERROR (LSB)
0
238916 G19
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
DNL ERROR (LSB)
238916 G20
0
0.1
0.2
0.3
0.4
0
–0.1
3276816384 49152 65536
–0.4
–0.5
–0.2
0.5
–0.3
INTERNAL REF
EXTERNAL REF
FREQUENCY (kHz)
0
AMPLITUDE (dBFS)
–60
–40
–20
–80
–100
500250 750 1000 1250
–160
–180
–120
0
–140
238916 G23
SNR = 93.2dB
THD = –112dB
SINAD = 93.2dB
SFDR = 113dB
CODE
COUNTS
238916 G21
40000
0
80000
120000
160000
200000
240000
2 3 4 5 6
CODE
COUNTS
238916 G22
40000
0
80000
120000
160000
200000
240000
65530 65531 65532 65533 65534
–40 –30 –20 0
–10
INPUT LEVEL (dB)
SNR, SINAD (dB)
93.0
94.0
92.5
92.0
93.5
238916 G26
SNR
SINAD
–55 –15
25
45 125
–35 5
65
85
105
TEMPERATURE (°C)
SNR, SINAD (dB)
93
95
91
92
90
94
238916 G27
SNR
SINAD
80
84
88
92
96
82
86
90
94
FREQUENCY (kHz)
0
SNR, SINAD (dB)
12.5
25
37.5 50 7562.5 87.5 100
238916 G24
SINAD
SNR
FREQUENCY (kHz)
0
–130
THD, HARMONICS (dB)
–110
–100
–90
12.5
25
37.5 50 7562.5 87.5
–80
–75
–120
–125
–115
–105
–95
–85
100
238916 G25
THD
2ND
3RD