AD678KD Analog Devices Inc, AD678KD Datasheet - Page 4

• Manufacturer Part Number: AD678KD
• Description: A/D Converter (A-D) IC
• Manufacturer: Analog Devices Inc

Specifications of AD678KD

• No. Of Bits: 12 Bit
• Mounting Type: Through Hole
• Features: BiMOS, High-Impedance/-Bandwidth, 10V, AC/DC
• No. Of Channels: 1
• Interface Type: Parallel
• Package / Case: 28-CDIP
• Rohs Status: RoHS non-compliant
• Number Of Bits: 12
• Sampling Rate (per Second): 200k
• Data Interface: Parallel
• Number Of Converters: 2
• Power Dissipation (max): 745mw
• Voltage Supply Source: Analog and Digital, Dual ±
• Operating Temperature: 0°C ~ 70°C

AD678
TIMING SPECIFICATIONS
Parameter
SC Delay
Conversion Time
Conversion Rate
Convert Pulsewidth
Aperture Delay
Status Delay
Access Time
Float Delay
Output Delay
Format Setup
OE Delay
Read Pulsewidth
Conversion Delay
EOCEN Delay
NOTES
1
2
3
4
5
Specifications subject to change without notice.
Includes acquisition time.
Measured from the falling edge of OE/EOCEN (0.8 V) to the time at which the data lines/EOC cross 2.0 V or 0.8 V. See Figure 3.
C
C
Measured from the rising edge of OE/EOCEN (2.0 V) to the time at which the output voltage changes by 0.5 V. See Figure 3; C
OUT
OUT
= 100 pF.
= 50 pF.
5
2, 3
Figure 1. Conversion Timing
l
(All grades, T
otherwise noted)
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
SC
C
CR
CP
AD
SD
BA
FD
OD
FS
OE
RP
CD
EO
MIN
to T
MAX
, V
CC
= +12 V
–4–
Figure 3. Load Circuit for Bus Timing Specifications
Min
50
3.0
97
5
0
10
10
10
47
0
97
150
0
5%, V
EE
= –12 V
Figure 2. EOC Timing
5%, V
DD
Max
4.4
5
20
400
100
57
80
0
= +5 V
OUT
4
= 10 pF.
10% unless
REV. C
Units
ns
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns