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AD671 Datenblatt(PDF) 4 Page - Analog Devices

Teilenummer AD671
Bauteilbeschribung  Monolithic 12-Bit 2 MHz A/D Converter
PDF  16 Pages
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Hersteller  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD671 Datenblatt(HTML) 4 Page - Analog Devices

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AD671–SPECIFICATIONS
DIGITAL SPECIFICATIONS
(For all grades TMIN to TMAX, with VCC = +5 V
5%, VLOGIC = +5 V
10%, VEE = –5 V
5%, VREF = +5.000 V, unless otherwise noted)
REV. B
–4–
Parameter
Symbol
Min
Typ
Max
Units
LOGIC INPUT
High Level Input Voltage
VIH
+2.0
V
Low Level Input Voltage
VIL
+0.8
V
High Level Input Current (VIN = VLOGIC)IIH
–10
+10
µA
Low Level Input Current (VIN = 0 V)
IIL
–10
+10
µA
Input Capacitance
CIN
5pF
LOGIC OUTPUTS
High Level Output Voltage (IOH = 0.5 mA)
VOH
+2.4
V
Low Level Output Voltage (IOL = 1.6 mA)
VOL
+0.4
V
Output Capacitance
COUT
5pF
Specifications shown in boldface are tested on all devices 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.
Specifications subject to change without notice.
SWITCHING SPECIFICATIONS
Parameter
Symbol
Min
Typ
Max
Units
Conversion Time
(AD671-500)
tC
475
500
ns
(AD671-750)
tC
725
750
ns
ENCODE Pulse Width High
(AD671-500)
tENC
20
30
ns
(AD671-750)
tENC
20
50
ns
ENCODE Pulse Width Low
tENCL
20
ns
DAV Pulse Width
(AD671-500)
tDAV
75
200
ns
(AD671-750)
tDAV
75
300
ns
ENCODE Falling Edge Delay
tF
0ns
Start New Conversion Delay
tR
0ns
Data and OTR Delay from DAV Falling Edge
tDD
1
20
75
ns
Data and OTR Valid before DAV Rising Edge
tSS
2
20
75
ns
NOTES
1t
DD is measured from when the falling edge of DAV crosses 0.8 V to when the output crosses 0.4 V or 2.4 V with a 25 pF load capacitor on each output pin.
2t
SS is measured from when the outputs cross 0.4 V or 2.4 V to when the rising edge of DAV crosses 2.4 V with a 25 pF load capacitor on each output pin.
(For all grades TMIN to TMAX with VCC = +5 V
5%, VLOGIC = +5 V
10%, VEE = –5 V
5%, VIL = 0.8 V, VIH = 2.0 V, VOL = 0.4 V and VOH = 2.4 V)
Figure 1. AD671 Timing Diagrams
a. Encode Pulse HIGH
b. Encode Pulse LOW



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