参数资料
型号: AD7609BSTZ
厂商: Analog Devices Inc
文件页数: 9/36页
文件大小: 0K
描述: IC DAS 18BIT 8CHANNEL 64-LQFP
特色产品: A/D Converters
标准包装: 1
类型: 数据采集系统(DAS),ADC
分辨率(位): 18 b
采样率(每秒): 200k
数据接口: DSP,MICROWIRE?,并联,QSPI?,串行,SPI?
电压电源: 模拟和数字
电源电压: 2.3 V ~ 5 V,4.75 V ~ 5.25 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 托盘
Data Sheet
AD7609
Rev. A | Page 17 of 36
80
85
90
95
100
105
10
100
10k
100k
S
NR
(
d
Bs)
INPUT FREQUENCY (Hz)
NO OS
OS × 2
OS × 4
OS × 8
OS × 16
OS × 32
OS × 64
AVCC, VDRIVE = 5V
fSAMPLE CHANGES WITH OS RATE
TA = 25°C
INTERNAL REFERENCE
±5V RANGE
09760-
018
Figure 20. SNR vs. Input Frequency, ±5 V Range
–120
–110
–100
–90
–80
–70
–60
1
10
100
T
HD
(
d
B)
FREQUENCY (kHz)
±10V RANGE
AVCC, VDRIVE = 5V
TA = 25°C
fSAMPLE = 200 kSPS
RSOURCE MATCHED
ON Vx+, Vx– INPUTS
10k
5k
10
0
1.2k
500
09760-
020
Figure 21. THD vs. Input Frequency for Various Source Impedances,
±10 V Range
–120
–110
–100
–90
–80
–70
–60
–50
–40
1
10
100
T
HD
(
d
B)
FREQUENCY (kHz)
09760-
019
±5V RANGE
AVCC, VDRIVE = 5V
TA = 25°C
fSAMPLE = 200 kSPS
RSOURCE MATCHED
ON Vx+, Vx– INPUTS
10k
5k
10
0
1.2k
500
Figure 22. THD vs. Input Frequency for Various Source Impedances,
±5 V Range
200 kSPS
AVCC,VDRIVE = 5V
EXTERNAL REFERENCE
09760-
023
±5V RANGE
±10V RANGE
–6
–4
–2
0
2
4
6
8
–40
–20
0
20
40
60
80
BI
P
O
L
AR
Z
E
RO
E
RRO
R
(
L
S
B)
TEMPERATURE (°C)
Figure 23. Bipolar Zero Code Error vs. Temperature
16
12
8
4
0
–4
–8
–12
–40
–25
–10
5
20
35
50
65
80
–16
BI
P
O
L
AR
Z
E
RO
CO
DE
E
RRO
R
M
AT
CHI
NG
(
L
S
B)
TEMPERATURE (°C)
200kSPS
AVCC, VDRIVE = 5V
EXTERNAL REFERENCE
±5V RANGE
±10V RANGE
09760-
224
Figure 24. Bipolar Zero Code Error Matching Between Channels
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
160
140
120
100
80
60
40
20
–140
CHANNE
L
-T
O
-CHANNE
L
IS
OL
A
TION
(
dB
)
NOISE FREQUENCY (kHz)
AVCC, VDRIVE = 5V
INTERNAL REFERENCE
AD7609 RECOMMENDED DECOUPLING USED
fSAMPLE = 200kSPS
TA = 25°C
09760-
225
±5V RANGE
±10V RANGE
Figure 25. Channel-to-Channel Isolation
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