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AD670BD Fiches technique(PDF) 3 Page - Analog Devices

No de pièce AD670BD
Description  Low Cost Signal Conditioning 8-Bit ADC
Download  12 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD670BD Fiches technique(HTML) 3 Page - Analog Devices

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Model
AD670A
AD670B
AD670S
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
Units
OPERATING TEMPERATURE RANGE
–40
+85
–40
+85
–55
+125
°C
RESOLUTION
8
8
8
Bit
CONVERSION TIME
10
10
10
µs
RELATIVE ACCURACY
1/2
1/4
1/2
LSB
TMIN to TMAX
1/2
1/2
1
LSB
DIFFERENTIAL LINEARITY ERROR
1
TMIN to TMAX
GUARANTEED NO MISSING CODES ALL GRADES
GAIN ACCURACY
@ +25
°C
1.5
0.75
1.5
LSB
TMIN to TMAX
2.5
1.5
2.5
LSB
UNIPOLAR ZERO ERROR
@ +25
°C
1.0
0.5
1.0
LSB
TMIN to TMAX
2.0
1.0
2.0
LSB
BIPOLAR ZERO ERROR
@ +25
°C
1.0
0.5
1.0
LSB
TMIN to TMAX
2.0
1.0
2.0
LSB
ANALOG INPUT RANGES
DIFFERENTIAL ( –VIN to +VIN)
Low Range
0 to +255
0 to +255
0 to +255
mV
–128 to +127
–128 to +127
–128 to +127
mV
High Range
0 to +2.55
0 to +2.55
0 to +2.55
V
–1.28 to +1.27
–1.28 to +1.27
–1.28 to +1.27
V
ABSOLUTE (Inputs to Power GND)
Low Range TMIN to TMAX
–0.150
VCC – 3.5 –0.150
VCC – 3.5 –0.150
VCC – 3.5 V
High Range TMIN to TMAX
–1.50
VCC
–1.50
VCC
–1.50
VCC
V
BIAS CURRENT (255 mV RANGE)
TMIN to TMAX
200
500
200
500
200
750
nA
OFFSET CURRENT (255 mV RANGE)
TMIN to TMAX
40
200
40
200
40
200
nA
2.55 V RANGE INPUT RESISTANCE
8.0
12.0
8.0
12.0
8.0
12.0
k
2.55 V RANGE FULL-SCALE MATCH
+ AND – INPUT
±1/2
±1/2
±1/2
LSB
COMMON-MODE REJECTION
RATIO (255 mV RANGE)
11
1
LSB
COMMON-MODE REJECTION
RATIO (2.55 V RANGE)
1
1
1
LSB
POWER SUPPLY
Operating Range
4.5
5.5
4.5
5.5
4.75
5.5
V
Current ICC
30
45
30
45
30
45
mA
Rejection Ratio TMIN to TMAX
0.015
0.015
0.015
% of FS/%
DIGITAL OUTPUTS
SINK CURRENT (VOUT = 0.4 V)
TMIN to TMAX
1.6
1.6
1.6
mA
SOURCE CURRENT (VOUT = 2.4 V)
TMIN to TMAX
0.5
0.5
0.5
mA
THREE-STATE LEAKAGE CURRENT
40
40
40
µA
OUTPUT CAPACITANCE
5
5
5
pF
DIGITAL INPUT VOLTAGE
VINL
0.8
0.8
0.7
V
VINH
2.0
2.0
2.0
V
DIGITAL INPUT CURRENT
(0
≤ V
IN ≤ +5 V)
IINL
–100
–100
–100
µA
IINH
+100
+100
+ 100
µA
INPUT CAPACITANCE
10
10
10
pF
NOTES
1Tested at V
CC = 4.5 V, 5.0 V and 5.5 V for A, B grades; 4.75 V, 5.0 V and 5.5 V for S grade.
Specifications shown in boldface are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels. All min and max specifications
are guaranteed, although only those shown in boldface are tested on all production units.
Specifications subject to change without notice.
AD670
REV. A
–3–


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