参数资料
型号: AD7665ASTZRL
厂商: Analog Devices Inc
文件页数: 5/23页
文件大小: 0K
描述: IC ADC 16BIT CMOS 5V 48-LQFP
标准包装: 1
系列: PulSAR®
位数: 16
采样率(每秒): 570k
数据接口: 串行,并联
转换器数目: 1
功率耗散(最大): 74mW
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: 48-LQFP
供应商设备封装: 48-LQFP(7x7)
包装: 标准包装
输入数目和类型: 4 个单端,单极;4 个单端,双极
产品目录页面: 778 (CN2011-ZH PDF)
配用: EVAL-AD7665CBZ-ND - BOARD EVALUATION FOR AD7665
其它名称: AD7665ASTZRLDKR
REV.
AD7665
–13–
TYPICAL CONNECTION DIAGRAM
Figure 5 shows a typical connection diagram for the AD7665. Different circuitry shown on this diagram is optional and is discussed below.
100nF
10 F
100nF
10 F
AVDD
10 F
100nF
AGND
DGND
DVDD
OVDD
OGND
SER/
PAR
CNVST
BUSY
SDOUT
SCLK
RD
CS
RESET
PD
REFGND
CREF
2.5V REF
REF
50
D
CLOCK
AD7665
C/ P/DSP
SERIAL
PORT
DIGITAL SUPPLY
(3.3V OR 5V)
ANALOG
SUPPLY
(5V)
DVDD
OB/
2C
NOTE 8
BYTESWAP
DVDD
50k
100nF
1M
INA
100nF
U2
IND
INGND
ANALOG
INPUT
( 10V)
CC
2.7nF
U1
15
10 F
NOTE 2
NOTE 1
NOTE 3
NOTE 7
NOTE 4
50
INC
INB
NOTE 6
NOTES
1. SEE VOLTAGE REFERENCE INPUT SECTION.
2. WITH THE RECOMMENDED VOLTAGE REFERENCES, CREF IS 47 F. SEE VOLTAGE REFERENCE INPUT SECTION.
3. OPTIONAL CIRCUITRY FOR HARDWARE GAIN CALIBRATION.
4. FOR BIPOLAR RANGE ONLY. SEE SCALER REFERENCE INPUT SECTION.
5. THE AD8021 IS RECOMMENDED. SEE DRIVER AMPLIFIER CHOICE SECTION.
6. WITH 0V TO 2.5V RANGE ONLY. SEE ANALOG INPUTS SECTION.
7. OPTION. SEE POWER SUPPLY SECTION.
8. OPTIONAL LOW JITTER
CNVST. SEE CONVERSION CONTROL SECTION.
+
++
+
AD8031
AD8021
50
ADR421
NOTE 5
WARP
IMPULSE
Figure 5. Typical Connection Diagram (±10 V Range Shown)
Table III. Output Codes and Ideal Input Voltages
Digital Output
Code (Hexa)
Straight Twos
Description
Analog Input
Binary
Complement
Full-Scale Range
1
±10 V
±5 V
±2.5 V
0 V to 10 V
0 V to 5 V
0 V to 2.5 V
Least Significant Bit 305.2 V
152.6 V
76.3 V
152.6 V
76.3 V
38.15 V
FSR – 1 LSB
9.999695 V
4.999847 V
2.499924 V
9.999847 V
4.999924 V 2.499962 V
FFFF
2
7FFF
2
Midscale + 1 LSB
305.2 V
152.6 V
76.3 V
5.000153 V
2.570076 V 1.257038 V
8001
0001
Midscale
0 V
5 V
2.5 V
1.25 V
8000
0000
Midscale – 1 LSB
–305.2 V
–152.6 V
–76.3 V
4.999847 V
2.499924 V 1.249962 V
7FFF
FFFF
–FSR + 1 LSB
–9.999695 V –4.999847 V –2.499924 V 152.6 V
76.3 V
38.15 V
0001
8001
–FSR
–10 V
–5 V
–2.5 V
0 V
0000
3
8000
3
NOTES
1Values with REF = 2.5 V; with REF = 3 V, all values will scale linearly.
2This is also the code for an overrange analog input.
3This is also the code for an underrange analog input.
C
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