参数资料
型号: AD7876BR
厂商: Analog Devices Inc
文件页数: 22/28页
文件大小: 0K
描述: IC ADC 12BIT SAMPLING 10V 24SOIC
产品变化通告: Conversion Time Change
标准包装: 1
位数: 12
采样率(每秒): 100k
数据接口: 串行,并联
转换器数目: 1
功率耗散(最大): 95mW
电压电源: 双 ±
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-SOIC(0.295",7.50mm 宽)
供应商设备封装: 24-SOIC W
包装: 管件
输入数目和类型: 1 个单端,双极
AD7870/AD7875/AD7876
Rev. C | Page 3 of
28
SPECIFICATIONS
VDD = +5 V ± 5%, VSS = 5 V ± 5%, AGND = DGND = 0 V, fCLK = 2.5 MHz external, unless otherwise stated. All Specifications Tmin to
Tmax, unless otherwise noted.
AD7870 SPECIFICATIONS
Table 1.
ADN78701
Parameter
J, A
K, B
L, C
T
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE2
Signal-to-Noise Ratio3 (SNR)
@ +25°C
70
72
69
dB min
VIN = 10 kHz sine wave, fSAMPLE = 100 kHz
TMIN to TMAX
70
71
69
dB min
Typically 71.5 dB for 0 < VIN < 50 kHz
Total Harmonic Distortion (THD)
80
78
dB max
VIN = 10 kHz sine wave, fSAMPLE = 100 kHz
Typically 86 dB for 0 < VIN < 50 kHz
Peak Harmonic or Spurious Noise
80
78
dB max
VIN = 10 kHz, fSAMPLE = 100 kHz
Typically 86 dB for 0 < VIN < 50 kHz
Intermodulation Distortion (IMD)
Second Order Terms
80
78
dB max
fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 50 kHz
Third Order Terms
80
78
dB max
fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 50 kHz
Track-and-Hold Acquisition Time
2
μs max
DC ACCURACY
Resolution
12
Bits
Minimum Resolution for which No Missing Codes
are Guaranteed
12
Bits
Integral Nonlinearity
±1/2
±1/4
±1/2
LSB typ
Integral Nonlinearity
±1
±1/2
±1
LSB max
Differential Nonlinearity
±1
LSB max
Bipolar Zero Error
±5
LSB max
Positive Full-Scale Error4
±5
LSB max
Negative Full-Scale Error4
±5
LSB max
ANALOG INPUT
Input Voltage Range
±3
V
Input Current
±500
μA max
REFERENCE OUTPUT
REF OUT @ +25°C
2.99
V min
3.01
V max
REF OUT Tempco
±60
±35
ppm/°C
max
Reference Load Sensitivity
(ΔREF OUT/ΔI)
±1
mV max
Reference load current change (0 μA to
500 μA). Reference load should not be
changed during conversion.
LOGIC INPUTS
Input High Voltage, VINH
2.4
V min
VDD = 5 V ± 5%
Input Low Voltage, VINL
0.8
V max
VDD = 5 V ± 5%
Input Current, IIN
±10
μA max
VIN = 0 V to VDD
Input Current (12/8/CLK Input Only)
±10
μA max
VIN = VSS to VDD
Input Capacitance, CIN5
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
4.0
V min
ISOURCE = 40 μA
Output Low Voltage, VOL
0.4
V max
ISINK = 1.6 mA
DB11 to DB0
Floating-State Leakage Current
±10
μA max
Floating-State Output Capacitance5
15
pF max
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