参数资料
型号: AD7691BRMZ-RL7
厂商: Analog Devices Inc
文件页数: 28/28页
文件大小: 0K
描述: IC ADC 18BIT SAR 250KSPS 10-MSOP
标准包装: 1,000
系列: PulSAR®
位数: 18
采样率(每秒): 250k
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 12.5mW
电压电源: 模拟和数字
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
供应商设备封装: 10-MSOP
包装: 带卷 (TR)
输入数目和类型: 1 个差分,双极
配用: EVAL-AD7691CBZ-ND - BOARD EVALUATION FOR AD7691CBZ
Data Sheet
AD7691
Rev. C | Page 9 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
1.5
–1.5
0
262144
CODE
IN
L
(
L
S
B
)
1.0
0.5
0
–0.5
–1.0
65536
131072
196608
POSITIVE INL = 0.39LSB
NEGATIVE INL = –0.73LSB
06
14
6-
0
26
Figure 7. Integral Nonlinearity vs. Code 2.5 V
80k
0
25
CODE IN HEX
CO
UNT
S
70k
60k
50k
40k
30k
20k
10k
26
27
28
29
2A
2B
2C
2D
2E
2F
0
26
2062
14
0
2904
69769
28527
27770
VDD = REF = 5V
σ = 0.76LSB
06
14
6-
02
7
Figure 8. Histogram of a DC Input at the Code Center, 5 V
0
–180
0
FREQUENCY (kHz)
AM
P
L
IT
UDE
(d
B
o
fF
u
ll
S
ca
le)
–20
–40
–60
–80
–100
–120
–140
–160
20
40
60
80
100
120
32768 POINT FFT
VDD = REF = 5V
fS = 250kSPS
fIN = 2kHz
SNR = 101.4dB
THD = –120.1dB
2ND HARMONIC = –140.7dB
3RD HARMONIC = –120.3dB
06
14
6-
0
28
Figure 9. 2 kHz FFT Plot, 5 V
1.0
–1.0
0
262144
CODE
DNL
(
L
S
B)
0.5
0
–0.5
65536
131072
196608
POSITIVE DNL = 0.37LSB
NEGATIVE DNL = –0.33LSB
06
14
6-
0
29
Figure 10. Differential Nonlinearity vs. Code, 5 V
45k
0
CODE IN HEX
CO
UNT
S
24
23
25 26
28 29
2B
2A
2C 2D
2F
2E
30 31
012 29 501
910 78 9 0
17460
28179
VDD = REF = 2.5V
σ = 1.42LSB
14362
24411
27
2997
38068
06
14
6-
03
0
40k
35k
30k
25k
20k
15k
10k
5k
4055
Figure 11. Histogram of a DC Input at the Code Center, 2.5 V
0
–180
0
FREQUENCY (kHz)
AM
P
L
IT
UDE
(d
B
o
fF
u
ll
S
ca
le)
–20
–40
–60
–80
–100
–120
–140
–160
20
10
30
40
50
60
70
80
90
32768 POINT FFT
VDD = REF = 2.5V
fS = 180kSPS
fIN = 2kHz
SNR = 96.4dB
THD = –120.3dB
2ND HARMONIC = –132.5dB
3RD HARMONIC = –121.2dB
06
14
6-
0
31
Figure 12. 2 kHz FFT Plot, 2.5 V
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