Datasheet

LTC2364-18
6
236418f
TYPICAL PERFORMANCE CHARACTERISTICS
32k Point FFT f
S
= 250ksps,
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
T
A
= 25°C, V
DD
= 2.5V, OV
DD
= 2.5V, REF = 5V,
f
SMPL
= 250ksps, unless otherwise noted.
OUTPUT CODE
0 65536 131072 196608 262144
–2.0
INL ERROR (LSB)
0.0
0.5
1.0
1.5
–0.5
–1.0
–1.5
2.0
236418 G01
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
236418 G02
0 65536 131072 196608 262144
CODE
COUNTS
25000
30000
35000
236418 G03
15000
0
131067 131069 131071 131073 131075 131077
40000
σ = 1.3
20000
10000
5000
FREQUENCY (kHz)
0 25 50 75 100 125
–180
AMPLITUDE (dBFS)
–60
–40
–20
–80
–100
–120
–140
–160
0
236418 TA01b
SNR = 97.2dB
THD = –121dB
SINAD = 97.2dB
SFDR = 125dB
FREQUENCY (kHz)
0
70
SNR, SINAD (dBFS)
75
80
85
90
50 100
236418 G05
95
100
SNR
25 75
125
SINAD
FREQUENCY (kHz)
0
–160
HARMONICS, THD (dBFS)
–150
–130
–120
–110
–60
THD
2ND
3RD
–90
50
100
236418 G06
–140
–80
–70
–100
25 75 125
INPUT LEVEL (dB)
–40
95.0
SNR, SINAD (dBFS)
95.5
96.0
96.5
97.0
97.5
SNR
SINAD
98.0
–30 –20 –10 0
236418 G07
REFERENCE VOLTAGE (V)
2.5
95
96
98
97
SNR
SINAD
4.5
236418 G08
94
93
3 3.5 4 5
92
91
90
SNR, SINAD (dBFS)
REFERENCE VOLTAGE (V)
2.5
HARMONICS, THD (dBFS)
–120
–110
3RD
–100
4.5
236418 G09
–130
–140
–125
–115
–105
–135
–145
–150
3
3.5
4
5
2ND
THD