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AD7177-2 数据表(PDF) 7 Page - Analog Devices

部件名 AD7177-2
功能描述  32-Bit, 10 kSPS, Sigma-Delta ADC with Settling and True Rail-to-Rail Buffers
Download  61 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7177-2 数据表(HTML) 7 Page - Analog Devices

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AD7177-2
Data Sheet
Rev. B | Page 6 of 60
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
LOGIC INPUTS
Input High Voltage, VINH1
2 V ≤ IOVDD < 2.3 V
0.65 × IOVDD
V
2.3 V ≤ IOVDD ≤ 5.5 V
0.7 × IOVDD
V
Input Low Voltage, VINL1
2 V ≤ IOVDD < 2.3 V
0.35 × IOVDD
V
2.3 V ≤ IOVDD ≤ 5.5 V
0.7
V
Hysteresis1
IOVDD ≥ 2.7 V
0.08
0.25
V
IOVDD < 2.7 V
0.04
0.2
V
Leakage Current
−10
+10
µA
LOGIC OUTPUT (DOUT/RDY)
Output High Voltage, VOH1
IOVDD ≥ 4.5 V, ISOURCE = 1 mA
0.8 × IOVDD
V
2.7 V ≤ IOVDD < 4.5 V, ISOURCE = 500 µA
0.8 × IOVDD
V
IOVDD < 2.7 V, ISOURCE = 200 µA
0.8 × IOVDD
V
Output Low Voltage, VOL1
IOVDD ≥ 4.5 V, ISINK = 2 mA
0.4
V
2.7 V ≤ IOVDD < 4.5 V, ISINK = 1 mA
0.4
V
IOVDD < 2.7 V, ISINK = 400 µA
0.4
V
Leakage Current
Floating state
−10
+10
µA
Output Capacitance
Floating state
10
pF
SYSTEM CALIBRATION1
Full-Scale (FS) Calibration Limit
1.05 × FS
V
Zero-Scale Calibration Limit
−1.05 × FS
V
Input Span
0.8 × FS
2.1 × FS
V
POWER REQUIREMENTS
Power Supply Voltage
AVDD1 to AVSS
4.5
5
5.5
V
AVDD2 to AVSS
2
2.5 to 5
5.5
V
AVSS to DGND
−2.75
0
V
IOVDD to DGND
2
2.5 to 5
5.5
V
IOVDD to AVSS
For AVSS < DGND
6.35
V
POWER SUPPLY CURRENTS4
All outputs unloaded, digital inputs
connected to IOVDD or DGND
Full Operating Mode
AVDD1 Current
Analog input and reference input
buffers disabled, external reference
1.4
1.65
mA
Analog input and reference input
buffers disabled, internal reference
1.75
2
mA
Analog input and reference input
buffers enabled, external reference
13
16
mA
Each buffer: AIN+, AIN−, REF+, REF−
2.9
mA
AVDD2 Current
External reference
4.5
5
mA
Internal reference
4.75
5.2
mA
IOVDD Current
External clock
2.5
2.8
mA
Internal clock
2.75
3.1
mA
External crystal
3
mA
Standby Mode (LDO On)
Internal reference off, total current
consumption
25
µA
Internal reference on, total current
consumption
425
µA
Power-Down Mode
Full power-down (including LDO and
internal reference)
5
10
µA


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