參數(shù)資料
型號(hào): AD7694
廠商: Analog Devices, Inc.
英文描述: 16-Bit, 250 kSPS PulSAR ADC in MSOP
中文描述: 16位,250 kSPS的PulSAR系列ADC的,采用MSOP
文件頁(yè)數(shù): 9/16頁(yè)
文件大?。?/td> 281K
代理商: AD7694
AD7694
TYPICAL PERFORMANCE CHARACTERISTICS
Rev. 0 | Page 9 of 16
4
–4
–3
–2
–1
0
1
2
3
0
32768
CODE
16384
49152
65536
0
I
POSITIVE INL = +0.68 LSB
NEGATIVE INL = –1.14 LSB
Figure 5. Integral Nonlinearity vs. Code
12000
10000
8000
6000
4000
2000
0
24E0
24E1
24E2
24E3
24E4
24E5
24E6
24E7
24E8
0
CODE IN HEX
C
0
0
1
0
0
12500
10003
0
108568
VDD = REF = 5V
Figure 6. Histogram of a DC Input at the Code Center
0
–180
–160
–140
–120
–100
–80
–60
–40
–20
0
20
40
60
80
100
120
0
FREQUENCY (kHz)
A
16384 POINT FFT
VDD = REF = 5V
f
S
= 250kSPS
f
= 20.43kHz
SNR = 92.5dB
THD = –109.9dB
SFDR = –111.0dB
Figure 7. FFT Plot
2.0
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
0
32768
CODE
16384
49152
65536
0
D
POSITIVE DNL = +0.59 LSB
NEGATIVE DNL = –0.56 LSB
Figure 8. Differential Nonlinearity vs. Code
8000
7000
6000
5000
4000
3000
2000
1000
0
251B 251C 251D 251E 251F 2520 2521 2522 2523 2524 2525 2526
CODE IN HEX
0
C
VDD = REF = 2.5V
0
0
27
2808
50
1
0
0
28148
65487
2133
32418
Figure 9. Histogram of a DC Input at the Code Center
0
–180
–160
–140
–120
–100
–80
–60
–40
–20
0
10
20
30
40
50
60
70
0
FREQUENCY (kHz)
A
16384 POINT FFT
VDD = REF = 2.5V
f
S
= 150kSPS
f
= 20.43kHz
SNR = 88.5dB
THD = –102.7dB
SFDR = –105.1dB
Figure 10. FFT Plot
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