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AD7761BSTZ-RL7 Fiches technique(PDF) 4 Page - Analog Devices

No de pièce AD7761BSTZ-RL7
Description  8-Channel, 16-Bit, Simultaneous Sampling ADC with Power Scaling, 110.8 kHz BW
Download  69 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD7761BSTZ-RL7 Fiches technique(HTML) 4 Page - Analog Devices

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AD7761
Data Sheet
Rev. 0 | Page 4 of 69
SPECIFICATIONS
AVDD1A = AVDD1B = 4.5 V to 5.5 V, AVDD2A = AVDD2B = 2.0 V to 5.5 V, IOVDD = 1.72 V to 1.88 V and 2.25 V to 3.6 V, AVSS =
DGND = 0 V, REFx+ = 4.096 V and REFx− = 0 V, MCLK = 32.768 MHz, analog input precharge buffers on, reference precharge buffers
off, wideband filter, fCHOP = fMOD/32, TA = −40°C to +105°C, unless otherwise noted.
Table 1.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
ADC SPEED AND PERFORMANCE
Output Data Rate (ODR), per Channel1
Fast
8
256
kSPS
Median
4
128
kSPS
Focus
1
32
kSPS
−3 dB Bandwidth
Fast, wideband filter
110.8
kHz
Median, wideband filter
55.4
kHz
Focus, wideband filter
13.8
kHz
Data Output Coding
Twos complement, MSB first
No Missing Codes2
16
Bits
DYNAMIC PERFORMANCE
Decimation by 32, 256 kSPS ODR
Dynamic Range
Shorted input, wideband filter
97.3
97.7
dB
Signal-to-Noise Ratio (SNR)
1 kHz, −0.5 dBFS, sine wave input
Sinc5 filter
97.3
97.9
dB
Wideband filter
97.3
97.7
dB
Signal-to-Noise-and-Distortion Ratio
(SINAD)
1 kHz, −0.5 dBFS, sine wave input
97.3
97.7
dB
Total Harmonic Distortion (THD)
1 kHz, −0.5 dBFS, sine wave input
−120
−107
dB
Spurious-Free Dynamic Range
(SFDR)
126
dBc
INTERMODULATON DISTORTION (IMD)
fINA = 9.7 kHz, fINB = 10.3 kHz
Second order
−125
dB
Third order
−124
dB
ACCURACY
INL3
Endpoint method
±1
± 1.5
LSB
Offset Error4
±1
±2
LSB
Gain Error4
TA = 25°C
±5
±40
LSB
Gain Drift vs. Temperature2
±0.01
±0.02
LSB/°C
VCM PIN
Output
With respect to AVSS
(AVDD1 −
AVSS)/2
V
Load Regulation
∆VOUT/∆IL
400
μV/mA
Voltage Regulation
Applies to the following VCM output
options only: VCM = ∆VOUT/∆(AVDD1 −
AVSS)/2, VCM = 1.65 V, and VCM = 2.5 V
5
μV/V
Short-Circuit Current
30
mA
ANALOG INPUTS
See the Analog Input section
Differential Input Voltage Range
VREF = (REFx+) − (REFx−)
−VREF
+VREF
V
Input Common-Mode Range2
AVSS
AVDD1
V
Absolute Analog Input Voltage Limits2
AVSS
AVDD1
V
Analog Input Current
Unbuffered
Differential component
±48
μA/V
Common-mode component
±17
μA/V
Precharge Buffer On5
−20
μA
Input Current Drift
Unbuffered
±5
nA/V/°C
Precharge Buffer On
±31
nA/°C


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