VDD = 3 V ± 10%, V
參數(shù)資料
型號(hào): AD7825BRZ-REEL7
廠商: Analog Devices Inc
文件頁(yè)數(shù): 22/28頁(yè)
文件大?。?/td> 0K
描述: IC ADC 8BIT 4CH 2MSPS 24-SOIC
產(chǎn)品變化通告: Product Discontinuance 27/Oct/2011
標(biāo)準(zhǔn)包裝: 400
位數(shù): 8
采樣率(每秒): 2M
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 36mW
電壓電源: 單電源
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 24-SOIC W
包裝: 帶卷 (TR)
輸入數(shù)目和類型: 4 個(gè)單端,單極
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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