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AD7291BCPZ-RL7 Folha de dados(PDF) 2 Page - Analog Devices

Nome de Peças AD7291BCPZ-RL7
Descrição Electrónicos  8-Channel, I2C, 12-Bit SAR ADC with Temperature Sensor
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

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AD7291
Preliminary Technical Data
Rev. PrC | Page 2 of 21
SPECIFICATIONS
AD7291 SPECIFICATIONS
VDD = 2.8V to 3.6V; VDRIVE = 1.65 V to 3.6 V; fSCLK = 400KHz, fast SCLK mode; VREF = 2.5 V internal/external; TA = −40°C to +125°C,
unless otherwise noted.
Table 2.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
fIN = 10 kHz sine wave
Signal-to-Noise Ratio (SNR)1
70
71
dB
Signal-to-Noise (+ Distortion) Ratio (SINAD)1
70
71
dB
Total Harmonic Distortion (THD)1
−84
78
dB
Spurious-Free Dynamic Range (SFDR)1
−85
80
dB
Intermodulation Distortion (IMD)1
fA = 5.4 kHz, fB = 4.6 kHz
Second-Order Terms
−88
dB
Third-Order Terms
−88
dB
Channel-to-Channel Isolation1
−100
dB
Full Power Bandwidth2
TBD
MHz
@ 3 dB
TBD
MHz
@ 0.1 dB
DC ACCURACY
Resolution
12
Bits
Integral Nonlinearity (INL)1
±0.5
±1
LSB
Differential Nonlinearity (DNL)1
±0.5
±0.99
LSB
Guaranteed no missed codes to 12 bits
Offset Error
±1
±6
LSB
Offset Error Matching
±0.5
±1
LSB
Offset Temperature Drift
4
ppm/°C
Gain Error
±1
±2
LSB
Gain Error Matching
±0.5
±1
LSB
Gain Temperature Drift
0.5
ppm/°C
ANALOG INPUT
Input Voltage Ranges
0
VREF
V
DC Leakage Current
±0.01
±1
µA
Input Capacitance2
32
pF
During Acquisition
Outside Acquisition
Input Impedance2
TBD
REFERENCE INPUT/OUTPUT
Reference Output Voltage3
2.4875
2.5
2.512
5
V
±0.5% maximum @ 25°C
Long-Term Stability
150
ppm
For 1000 hours
Output Voltage Hysteresis1
50
ppm
Reference Input Voltage Range4
2.0
2.5
V
DC Leakage Current
±0.01
±1
µA
External reference applied to Pin VREF
Input Capacitance
TBD
pF
VREF Output Impedance
TBD
Reference Temperature Coefficient
6
25
ppm/°C
VREF Noise2
60
µV rms
Bandwidth = TBD kHz


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