参数资料
型号: DC1783A-H
厂商: Linear Technology
文件页数: 21/24页
文件大小: 0K
描述: BOARD SAR ADC LTC2376-18
软件下载: QuikEval II System
设计资源: DC1783A Design Files
DC1783A Schematic
标准包装: 1
系列: QuikEval™
ADC 的数量: 1
位数: 18
采样率(每秒): 250k
数据接口: 串行,SPI?
输入范围: ±VREF
在以下条件下的电源(标准): 3.4mW @ 250kSPS
工作温度: 0°C ~ 70°C
已用 IC / 零件: LTC2376-18
已供物品:
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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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