参数资料
型号: AD7328BRUZ-REEL
厂商: Analog Devices Inc
文件页数: 4/37页
文件大小: 0K
描述: IC ADC 12BIT+SAR 8CHAN 20-TSSOP
设计资源: Using AD7328 in Appls with Single-Ended Industrial-Level Signals (CN0047)
标准包装: 2,500
系列: iCMOS®
位数: 12
采样率(每秒): 1M
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 1
功率耗散(最大): 30mW
电压电源: 双 ±
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 20-TSSOP
包装: 带卷 (TR)
输入数目和类型: 8 个单端,单极;8 个单端,双极;4 个差分,单极;4 个差分,双极
Data Sheet
AD7328
Rev. C | Page 11 of 36
8k
0
–3
CODE
NUM
B
E
R
O
F
O
CCURRE
NC
E
S
7k
6k
5k
4k
3k
2k
1k
–2
–1
0123
VCC =5V
VDD/VSS = ±12V
RANGE = ±10V
10k SAMPLES
TA = 25°C
023
1201
7600
1165
11
0
04852-
014
Figure 16. Histogram of Codes, Single-Ended Mode
–50
–100
0
04
852-
055
RIPPLE FREQUENCY (kHz)
CM
RR
(
d
B)
–55
–60
–65
–70
–75
–80
–85
–90
–95
200
400
600
800
1000
1200
DIFFERENTIAL MODE
FIN = 50kHz
VDD/VSS = ±12V
fS = 1MSPS
TA = 25°C
VCC =5V
VCC =3V
Figure 17. CMRR vs. Common-Mode Ripple Frequency
2.0
–2.0
±VDD/VSS SUPPLY VOLTAGE (V)
DN
L
E
RRO
R
(
L
S
B)
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
5
7
9
11
13
15
17
19
048
52-
0
49
±5V RANGE
VCC =VDRIVE =5V
INTERNAL REFERENCE
SINGLE-ENDED MODE
DNL = 750kSPS
DNL = 500kSPS
DNL = 1MSPS
Figure 18. DNL Error vs. Supply Voltage at 500 kSPS, 750 kSPS, and 1 MSPS
2.0
–2.0
±VDD/VSS SUPPLY VOLTAGE (V)
INL
E
RRO
R
(
L
S
B)
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
5
7
9
11
13
15
17
19
048
52-
0
50
±5V RANGE
VCC =VDRIVE =5V
INTERNAL REFERENCE
SINGLE-ENDED MODE
INL = 750kSPS
INL = 500kSPS
INL = 1MSPS
INL = 750kSPS
INL = 500kSPS
INL = 1MSPS
Figure 19. INL Error vs. Supply Voltage at 500 kSPS, 750 kSPS, and 1 MSPS
–50
–100
0
1200
04852-
054
SUPPLY RIPPLE FREQUENCY (kHz)
P
S
RR
(
d
B)
–55
–60
–65
–70
–75
–80
–85
–90
–95
200
400
600
800
1000
100mV p-p SINE WAVE ON EACH SUPPLY
NO DECOUPLING
SINGLE-ENDED MODE
fS = 1MSPS
VCC =5V
VCC =3V
VDD = 12V
VSS = –12V
Figure 20. PSRR vs. Supply Ripple Frequency Without Supply Decoupling
10
1000
ANALOG INPUT FREQUENCY (kHz)
T
HD
(
d
B
)
100
04
852-
015
–50
–55
–60
–65
–70
–75
–80
–85
–90
–95
VCC =VDRIVE =5V
VDD/VSS = ±12V
TA = 25°C
INTERNAL REFERENCE
RANGE = ±10V AND ±2.5V
RIN =50,
±2.5V RANGE
RIN =50,
±10V RANGE
RIN = 100,
±2.5V RANGE
RIN = 1000,
±2.5V RANGE
RIN = 2000,
±2.5V RANGE
RIN = 4700,
±2.5V RANGE
RIN =2000, ±10V RANGE
RIN = 1000, ±10V RANGE
RIN =100, ±10V RANGE
Figure 21. THD vs. Analog Input Frequency for Various Source Impedances,
True Differential Mode
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