Signal to Noise + Distortion Ratio
參數(shù)資料
型號： AD7858BRZ-REEL
廠商： Analog Devices Inc
文件頁數(shù)： 12/32頁
文件大?。?/td> 0K
描述： IC ADC 12BIT 8CHAN SRL 24SOIC
標準包裝： 1,000
位數(shù)： 12
采樣率（每秒）： 200k
數(shù)據(jù)接口： 8051，QSPI?，串行，SPI? µP
轉(zhuǎn)換器數(shù)目： 2
功率耗散（最大）： 33mW
電壓電源： 模擬和數(shù)字
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： 8 個單端，單極；4 個偽差分，單極
Parameter
A Version
1
B Version
1
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
Signal to Noise + Distortion Ratio3
70
71
dB min
Typically SNR is 72 dB
(SNR)
VIN = 10 kHz Sine Wave, fSAMPLE = 200 kHz (100 kHz)
Total Harmonic Distortion (THD)
–78
dB max
VIN = 10 kHz Sine Wave, fSAMPLE = 200 kHz (100 kHz)
Peak Harmonic or Spurious Noise
–78
dB max
VIN = 10 kHz Sine Wave, fSAMPLE = 200 kHz (100 kHz)
Intermodulation Distortion (IMD)
Second Order Terms
–78
–80
dB typ
fa = 9.983 kHz, fb = 10.05 kHz, fSAMPLE = 200 kHz (100 kHz)
Third Order Terms
–78
–80
dB typ
fa = 9.983 kHz, fb = 10.05 kHz, fSAMPLE = 200 kHz (100 kHz)
Channel-to-Channel Isolation
–90
dB typ
VIN = 25 kHz
DC ACCURACY
Any Channel
Resolution
12
Bits
Integral Nonlinearity
±1
LSB max
2.5 V External Reference VDD = 3 V, VDD = 5 V (B Grade Only)
±1
±0.5
LSB max
5 V External Reference VDD = 5 V
(
±1)
LSB max
(L Version, 5 V External Reference, VDD = 5 V)
(
±1)
LSB max
(L Version)
Differential Nonlinearity
±1
LSB max
Guaranteed No Missed Codes to 12 Bits. 2.5 V External
Reference VDD = 3 V, 5 V External Reference, VDD = 5 V
Total Unadjusted Error
±1
LSB typ
Unipolar Offset Error
±5
LSB max
Typically
±2 LSBs
±2.5
LSB max
5 V External Reference, VDD = 5 V
(
±3)
(
±3)
LSB max
(L Version)
(
±1.5)
(
±1.5)
LSB max
(L Version, 5 V External Reference, VDD = 5 V)
Unipolar Offset Error Match
1.5
LSB max
Positive Full-Scale Error
±4
LSB max
±1.5
LSB max
5 V External Reference, VDD = 5 V
Positive Full-Scale Error Match
1
LSB max
ANALOG INPUT
Input Voltage Ranges
0 to VREF
Volts
i.e., AIN(+) – AIN(–) = 0 to VREF, AIN(–) can be biased
up but AIN(+) cannot go below AIN(–)
Leakage Current
±1
A max
Input Capacitance
20
pF typ
REFERENCE INPUT/OUTPUT
REFIN Input Voltage Range
2.3/VDD
V min/max
Functional from 1.2 V
Input Impedance
150
k
typ
REFOUT Output Voltage
2.3/2.7
V min/max
REFOUT Tempco
20
ppm/
°C typ
LOGIC INPUTS
Input High Voltage, VINH
2.4
V min
AVDD = DVDD = 4.5 V to 5.5 V
2.1
V min
AVDD = DVDD = 3.0 V to 3.6 V
Input Low Voltage, VINL
0.8
V max
AVDD = DVDD = 4.5 V to 5.5 V
0.6
V max
AVDD = DVDD = 3.0 V to 3.6 V
Input Current, IIN
±10
A max
Typically 10 nA, VIN = 0 V or VDD
Input Capacitance, CIN
4
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
ISOURCE = 200
A
4
V min
AVDD = DVDD = 4.5 V to 5.5 V
2.4
V min
AVDD = DVDD = 3.0 V to 3.6 V
Output Low Voltage, VOL
0.4
V max
ISINK = 0.8 mA
Floating-State Leakage Current
±10
A max
Floating-State Output Capacitance
4
10
pF max
Output Coding
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
4.6 (18)
4.6
s max
(L Versions Only, –40
°C to +85°C, 1 MHz CLKIN)
(10)
s max
(L Versions Only, 0
°C to +70°C, 1.8 MHz CLKIN)
Track/Hold Acquisition Time
0.4 (1)
s min
(L Versions Only)
REV. B
–2–
AD7858/AD7858L–SPECIFICATIONS1, 2 (AV
DD = DVDD = +3.0 V to +5.5 V, REFIN/REFOUT = 2.5 V External
Reference unless otherwise noted, fCLKIN = 4 MHz (1.8 MHz B Grade (0 C to +70 C), 1 MHz A and B Grades (–40 C to +85 C) for L Version); fSAMPLE =
200 kHz (AD7858), 100 kHz (AD7858L);
SLEEP = Logic High; T
A = TMIN to TMAX, unless otherwise noted.) Specifications in ( ) apply to the AD7858L.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD7858L 制造商:AD 制造商全稱:Analog Devices 功能描述:3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC
AD7858LAN 制造商:Analog Devices 功能描述:
AD7858LAN3 制造商:AD 制造商全稱:Analog Devices 功能描述:3 V to 5 V Single Supply, 200 kSPS 8-Channel, 12-Bit Sampling ADC
AD7858LANZ 功能描述:IC ADC 12BIT 8CHAN SRL 24DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°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 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極
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