32k Point FFT fS = 250ksps,
參數資料
型號: LTC2376CDE-18#TRPBF
廠商: Linear Technology
文件頁數: 21/24頁
文件大?。?/td> 0K
描述: IC ADC 18BIT 250KSPS 16-DFN
產品培訓模塊: LTC2379- 18-/16-bit Fully-Differential SAR ADC Family Overview
標準包裝: 2,500
位數: 18
采樣率(每秒): 250k
數據接口: 串行,SPI?
轉換器數目: 1
功率耗散(最大): 4.25mW
電壓電源: 模擬和數字
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 16-WFDFN 裸露焊盤
供應商設備封裝: 16-DFN(4x3)
包裝: 帶卷 (TR)
輸入數目和類型: 1 個差分,雙極
配用: DC1783A-H-ND - BOARD SAR ADC LTC2376-18
DC1783A-D-ND - BOARD SAR ADC LTC2376-16
LTC2376-18
6
237618f
TYPICAL PERFORMANCE CHARACTERISTICS
32k Point FFT fS = 250ksps,
fIN = 2kHz
SNR, SINAD vs Input Frequency
THD, Harmonics
vs Input Frequency
SNR, SINAD vs Input level,
fIN = 2kHz
SNR, SINAD vs Reference
Voltage, fIN = 2kHz
THD, Harmonics vs Reference
Voltage, fIN = 2kHz
Integral Nonlinearity
vs Output Code
Differential Nonlinearity
vs Output Code
DC Histogram
OUTPUT CODE
0
65536
131072
196608
262144
–1.5
INL
ERROR
(LSB)
0.0
0.5
1.0
–0.5
–1.0
1.5
237618 G01
FREQUENCY (kHz)
0
255075
125
100
–180
AMPLITUDE
(dBFS)
–60
–40
–20
–80
–100
–120
–140
–160
0
237618 TA02
SNR = 102.3dB
THD = –126dB
SINAD = 102.2dB
SFDR = 127dB
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
237618 G02
0
65536
131072
196608
262144
CODE
131074
131073
131072
131071
131070
131069
0
COUNTS
20000
10000
70000
50000
30000
60000
40000
80000
σ = 0.7
237618 G03
TA = 25°C, VDD = 2.5V, OVDD = 2.5V, VCM = 2.5V,
REF = 5V, fSMPL = 250ksps, unless otherwise noted.
INPUT LEVEL (dB)
SNR,
SINAD
(dBFS)
103.0
237618 G07
101.0
101.5
102.0
102.5
–40
–30
–20
–10
0
SNR
SINAD
REFERENCE VOLTAGE (V)
SNR,
SINAD
(dBFS)
103
102
237618 G08
97
98
99
100
101
2.5
3.0
3.5
4.0
4.5
5.0
SINAD
SNR
HARMONICS,
THD
(dBFS)
–100
–110
237618 G09
–150
–135
–140
–145
–130
–125
–120
–115
–105
THD
3RD
REFERENCE VOLTAGE (V)
2.5
3.0
3.5
4.0
4.5
5.0
2ND
FREQUENCY (kHz)
SNR,
SINAD
(dBFS)
103
102
237618 G05
93
94
97
98
96
95
101
100
99
0
25
50
75
100
125
SNR
SINAD
FREQUENCY (kHz)
HARMONICS,
THD
(dBFS)
–80
237618 G06
–140
–130
–120
–110
–100
–90
0
25
50
75
100
125
3RD
2ND
THD
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