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AD7896BR Datasheet(PDF) 2 Page - Analog Devices

No. de pieza AD7896BR
Descripción Electrónicos  2.7 V to 5.5 V, 12-Bit, 8 us ADC in 8-Pin SO/DIP
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
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AD7896BR Datasheet(HTML) 2 Page - Analog Devices

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ABJ
S
Parameter
Versions
1
Versions
Version
Version
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
2
Signal to (Noise + Distortion) Ratio
3
@ +25
°C
70
70
70 typ
70
dB min
fIN =10 kHz Sine Wave, fSAMPLE = 100 kHz
TMIN to TMAX
70
dB min
Total Harmonic Distortion (THD)
3
–80
–80
–80 typ
–80
dB max
fIN = 10 kHz Sine Wave, fSAMPLE = 100 kHz
Peak Harmonic or Spurious Noise
3
–80
–80
–80 typ
dB max
fIN = 10 kHz Sine Wave, fSAMPLE = 100 kHz
Intermodulation Distortion (IMD)
3
fa = 9 kHz, fb = 9.5 kHz, fSAMPLE = 100 kHz
2nd Order Terms
–80
–80
–80 typ
–80
dB max
3rd Order Terms
–80
–80
–80 typ
–80
dB max
DC ACCURACY
Resolution
12
12
12
12
Bits
Minimum Resolution for which No
Missing Codes are Guaranteed
12
12
12
12
Bits
Relative Accuracy
3
±1
±1/2
±1
±1
LSB max
Differential Nonlinearity
3
±1
±1
±1
±1
LSB max
Positive Full-Scale Error
3
±3
±1.5
±3
±3
LSB max
Unipolar Offset Error
±4
±4
±5
±4
LSB max
VDD = 5 V ± 10%
±4
±3
±5
±4
LSB max
VDD = 2.7 V to 3.6 V
ANALOG INPUT
Input Voltage Range
0 to +VDD 0to+VDD 0to+VDD 0 to +VDD Volts
Input Current
±2
±2
±2
±5
µA max
LOGIC INPUTS
Input High Voltage, VINH
2.0
2.0
2.0
2.0
V min
VDD = 2.7 V to 3.6 V
2.4
2.4
2.4
2.4
VDD = 5 V ± 10%
Input Low Voltage, VINL
0.8
0.8
0.8
0.8
V max
Input Current, IIN
±10
±10
±10
±10
µA max
VIN = 0 V to VDD
Input Capacitance, CIN
4
10
10
10
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
2.4
2.4
2.4
2.4
V min
ISOURCE = 2 mA
Output Low Voltage, VOL
0.4
0.4
0.4
0.4
V max
ISINK = 2 mA
Output Coding
Straight (Natural) Binary
CONVERSION RATE
Conversion Time:
Mode 1 Operation
8888.5
µs max
Mode 2 Operation
5
14
14
14
14.5
µs max
Track/Hold Acquisition Time
3
1.5
1.5
1.5
1.5
µs max
POWER REQUIREMENTS
VDD
+2.7/+5.5 +2.7/+5.5 +2.7/+5.5 +2.7/+5.5 V min/max
IDD
4444mA max
Digital Input @ DGND, VDD = 2.7 V to
3.6 V
5555mA max
Digital Inputs @ DGND, VDD = 5 V ± 10%
Power Dissipation
10.8
10.8
10.8
10.8
mW max
VDD = 2.7 V, Typically 9 mW
Power-Down Mode
Digital Inputs @ DGND
IDD @ +25°C
555
µA typ
5
µA max
VDD = 2.7 V to 3.6 V
TMIN to TMAX
15
15
75
75
µA max
VDD = 2.7 V to 3.6 V
IDD @ +25°C
50505050
µA max
VDD = 5 V ± 10%
TMIN to TMAX
150
150
500
500
µA max
VDD = 5 V ± 10%
Power Dissipation @ +25
°C
13.5
13.5
13.5
13.5
µW max
VDD = 2.7 V
NOTES
1Temperature ranges are as follows: A, B Versions: –40
°C to +85°C; J Version: 0°C to +70°C; S Version: –55°C to +125°C.
2Applies to Mode 1 operation. See section on operating modes.
3See Terminology.
4Sample tested @ +25
°C to ensure compliance.
5This 14
µs includes the “wake-up” time from standby. This “wake-up” time is timed from the rising edge of CONVST, whereas conversion is timed from the
falling edge of CONVST, for narrow CONVST pulse width the conversion time is effectively the “wake-up” time plus conversion time hence 14
µs. This can be
seen from Figure 3. Note that if the CONVST pulse width is greater than 6
µs then the effective conversion time will increase beyond 14 µs.
Specifications subject to change without notice.
REV. B
–2–
(VDD = +2.7 V to +5.5 V, AGND = DGND = 0 V. All specifications TMIN to TMAX
unless otherwise noted)
AD7896–SPECIFICATIONS


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