参数资料
型号: AD7822BRZ-REEL7
厂商: Analog Devices Inc
文件页数: 22/28页
文件大小: 0K
描述: IC ADC 8BIT 1CH 2MSPS 20-SOIC
标准包装: 1
位数: 8
采样率(每秒): 2M
数据接口: 并联
转换器数目: 1
功率耗散(最大): 36mW
电压电源: 单电源
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-SOIC(0.295",7.50mm 宽)
供应商设备封装: 20-SOIC W
包装: 标准包装
输入数目和类型: 1 个单端,单极
产品目录页面: 779 (CN2011-ZH PDF)
其它名称: AD7822BRZ-REEL7DKR
AD7822/AD7825/AD7829
Rev. C | Page 3 of 28
SPECIFICATIONS
VDD = 3 V ± 10%, VDD = 5 V ± 10%, GND = 0 V, VREF IN/OUT = 2.5 V. All specifications 40°C to +85°C, unless otherwise noted.
Table 1.
Parameter
Version B
Unit
Test Condition/Comment
DYNAMIC PERFORMANCE
fIN = 30 kHz, fSAMPLE = 2 MHz
Signal to (Noise + Distortion) Ratio1
48
dB min
Total Harmonic Distortion1
55
dB max
Peak Harmonic or Spurious Noise1
55
dB max
Intermodulation Distortion1
fa = 27.3 kHz, fb = 28.3 kHz
Second-Order Terms
65
dB typ
Third-Order Terms
65
dB typ
Channel-to-Channel Isolation1
70
dB typ
fIN = 20 kHz
DC ACCURACY
Resolution
8
Bits
Minimum Resolution for Which
No Missing Codes Are Guaranteed
8
Bits
Integral Nonlinearity (INL)1
±0.75
LSB max
Differential Nonlinearity (DNL)1
±0.75
LSB max
Gain Error1
±2
LSB max
Gain Error Match1
±0.1
LSB typ
Offset Error1
±1
LSB max
Offset Error Match1
±0.1
LSB typ
ANALOG INPUTS2
See Analog Input section
VDD = 5 V ± 10%
Input voltage span = 2.5 V
VIN1 to VIN8 Input Voltage
VDD
V max
0
V min
VMID Input Voltage
VDD 1.25
V max
Default VMID = 1.25 V
1.25
V min
VDD = 3 V ± 10%
Input voltage span = 2 V
VIN1 to VIN8 Input Voltage
VDD
V max
0
V min
VMID Input Voltage
VDD 1
V max
Default VMID = 1 V
1
V min
VIN Input Leakage Current
±1
μA max
VIN Input Capacitance
15
pF max
VMID Input Impedance
6
kΩ typ
REFERENCE INPUT
VREF IN/OUT Input Voltage Range
2.55
V max
2.5 V + 2%
2.45
V min
2.5 V 2%
Input Current
1
μA typ
100
μA max
ON-CHIP REFERENCE
Nominal 2.5 V
Reference Error
±50
mV max
Temperature Coefficient
50
ppm/°C typ
LOGIC INPUTS
Input High Voltage, VINH
2.4
V min
VDD = 5 V ± 10%
Input Low Voltage, VINL
0.8
V max
VDD = 5 V ± 10%
Input High Voltage, VINH
2
V min
VDD = 3 V ± 10%
Input Low Voltage, VINL
0.4
V max
VDD = 3 V ± 10%
Input Current, IIN
±1
μA max
10 nA typical, VIN = 0 V to VDD
Input Capacitance, CIN
10
pF max
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