AD79421 データシートの表示（PDF） - Analog Devices
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AD79421 Datasheet PDF : 28 Pages
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AD7986
AVDD = DVDD = 2.5 V, BVDD = 5 V, VIO = 1.8 V to 2.7 V, VREF = 4.096 V, TA = −40°C to +85°C, unless otherwise noted.
Table 3.
Parameter
INTERNAL REFERENCE
Output Voltage
Temperature Drift
Line Regulation
Turn-On Settling Time
REFIN Output Voltage
REFIN Output Resistance
EXTERNAL REFERENCE
Voltage Range
Current Drain
REFERENCE BUFFER
REFIN Input Voltage Range
REFIN Input Current
DIGITAL INPUTS
Logic Levels
VIL
VIH
IIL
IIH
DIGITAL OUTPUTS
Data Format
Pipeline Delay
VOL
VOH
POWER SUPPLIES
AVDD, DVDD
BVDD
VIO
VIO Range
Standby Current1, 2
Power Dissipation
With Internal Reference
Without Internal Reference
With Internal Reference
Without Internal Reference
TEMPERATURE RANGE3
Specified Performance
Conditions
PDREF = low
TA= 25°C
−40°C to +85°C
AVDD = 2.5 V ± 5%
CREF = 10 μF, CREFBUFIN = 0.1 μF
REFIN @ 25°C
PDREF = high, REFIN = low
2 MSPS, VREF = 5.0 V
Min
4.081
2.4
Typ
4.096
±10
±50
220
1.2
7.5
500
1.2
160
Max
4.111
5.1
−0.3
+0.9 × VIO
−1
−1
+0.1 × VIO
VIO + 0.3
+1
+1
ISINK = +500 µA
ISOURCE = −500 µA
Specified performance
Serial, 18 bits, twos complement
Conversion results available immediately
after completed conversion
0.4
VIO − 0.3
2.375
4.75
1.8
2.5
2.625
5.0
5.25
2.5
2.7
AVDD = DVDD = VIO = 2.5 V, BVDD = 5.0 V
2.25
2 MSPS throughput
2 MSPS throughput
1.5 MSPS throughput
1.5 MSPS throughput
29
34
15
16.5
26
30
11.5
13
TMIN to TMAX
−40
+85
1 With all digital inputs forced to VIO or GND as required.
2 During acquisition phase.
3 Contact an Analog Devices, Inc., sales representative for the extended temperature range.
Unit
V
ppm/°C
ppm/V
ms
V
kΩ
V
µA
V
µA
V
V
µA
µA
V
V
V
V
V
µA
mW
mW
mW
mW
°C
Rev. B | Page 4 of 28
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