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参数资料
型号： AD7854LARZ
厂商： Analog Devices Inc
文件页数： 12/28页
文件大小： 0K
描述： IC ADC 12BIT PARALLEL LP 28-SOIC
标准包装： 27
位数： 12
采样率（每秒）： 100k
数据接口： 并联
转换器数目： 2
功率耗散（最大）： 30mW
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： 28-SOIC（0.295"，7.50mm 宽）
供应商设备封装： 28-SOIC W
包装： 管件
输入数目和类型： 1 个伪差分，单极；1 个伪差分，双极
产品目录页面： 779 (CN2011-ZH PDF)
Parameter
A Version
1
B Version
1
S Version
1
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
Signal to Noise + Distortion Ratio
3
70
71
70
dB min
Typically SNR is 72 dB
(SNR)
VIN = 10 kHz Sine Wave, fSAMPLE = 200 kHz
(L Version: fSAMPLE = 100 kHz @ fCLKIN = 2 MHz)
Total Harmonic Distortion (THD)
–78
dB max
VIN = 10 kHz Sine Wave, fSAMPLE = 200 kHz
(L Version: fSAMPLE = 100 kHz @ fCLKIN = 2 MHz)
Peak Harmonic or Spurious Noise
–78
dB max
VIN = 10 kHz Sine Wave, fSAMPLE = 200 kHz
(L Version: fSAMPLE = 100 kHz @ fCLKIN = 2 MHz)
Intermodulation Distortion (IMD)
Second Order Terms
–78
dB typ
fa = 9.983 kHz, fb = 10.05 kHz, fSAMPLE = 200 kHz
(L Version: fSAMPLE = 100 kHz @ fCLKIN = 2 MHz)
Third Order Terms
–78
dB typ
fa = 9.983 kHz, fb = 10.05 kHz, fSAMPLE = 200 kHz
(L Version: fSAMPLE = 100 kHz @ fCLKIN = 2 MHz)
DC ACCURACY
Resolution
12
Bits
Integral Nonlinearity
±1
±0.5
±1
LSB max
5 V Reference VDD = 5 V
Differential Nonlinearity
±1
LSB max
Guaranteed No Missed Codes to 12 Bits
Unipolar Offset Error
±3
±4
LSB max
±2
LSB typ
Unipolar Gain Error
±4
LSB max
±2
LSB typ
Bipolar Positive Full-Scale Error
±4
±5
LSB max
±2
LSB typ
Negative Full-Scale Error
±4
±5
LSB max
±2
LSB typ
Bipolar Zero Error
±4
±5
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(–).
±VREF/2
Volts
i.e., AIN(+) – AIN(–) = –VREF/2 to +VREF/2, AIN(–)
should be biased to +VREF/2 and AIN(+) can go below
AIN(–) but cannot go below 0 V.
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
2.3/2.75
2.3/2.7
V min/max
REFOUT Tempco
20
ppm/
°C typ
LOGIC INPUTS
Input High Voltage, VINH
3
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
0.4
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
Unipolar Input Range
Twos Complement
Bipolar Input Range
CONVERSION RATE
tCLKIN
× 18
Conversion Time
4.6 (10)
4.6 (9)
s max
(L Versions Only, 0
°C to +70°C, 1.8 MHz CLKIN)
Track/Hold Acquisition Time
0.5 (1)
s min
(L Versions Only, –40
°C to +85°C, 1 MHz CLKIN)
AD7854/AD7854L–SPECIFICATIONS1, 2 (AV
DD = DVDD = +3.0 V to +5.5 V, REFIN/REFOUT = 2.5 V
External Reference, fCLKIN = 4 MHz (for L Version: 1.8 MHz (0 C to +70 C) and 1 MHz (–40 C to +85 C)); fSAMPLE = 200 kHz (AD7854), 100 kHz
(AD7854L); TA = TMIN to TMAX, unless otherwise noted.) Specifications in () apply to the AD7854L.
–2–
REV. B
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AD7854LARZ-REEL 功能描述:IC ADC 12BIT PARALLEL LP 28SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:16 采样率（每秒）:45k 数据接口:串行 转换器数目:2 功率耗散（最大）:315mW 电压电源:模拟和数字 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) 输入数目和类型:2 个单端，单极
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