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AD977AARS Datasheet(PDF) 4 Page - Analog Devices

Part # AD977AARS
Description  16-Bit, 100 kSPS/200 kSPS BiCMOS A/D Converter
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD977AARS Datasheet(HTML) 4 Page - Analog Devices

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–4–
REV. D
AD977/AD977A–SPECIFICATIONS (Both Specs)
A, B, C Grades
Parameter
Conditions
Min
Typ
Max
Unit
DIGITAL INPUTS
Logic Levels
VIL
–0.3
+0.8
V
VIH
2.0
VDIG + 0.3
V
IIL
±10
µA
IIH
±10
µA
DIGITAL OUTPUTS
Data Format
Serial 16-Bits
Data Coding
Binary Two’s Complement or Straight Binary
Pipeline Delay
Conversion Results Only Available after Completed Conversion
V
OL
I
SINK = 1.6 mA
0.4
V
V
OH
I
SOURCE = 500
µA4
V
POWER SUPPLIES
Specified Performance
V
DIG
4.75
5
5.25
V
V
ANA
4.75
5
5.25
V
I
DIG
4mA
I
ANA
11
mA
Power Dissipation
PWRD LOW
100
mW
PWRD HIGH
50
µW
TEMPERATURE RANGE
Specified Performance
T
MIN to TMAX
–40
+85
°C
Specifications subject to change without notice.
TIMING SPECIFICATIONS
AD977A
AD977
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Convert Pulsewidth
t1
50
50
ns
R/
C, CS to BUSY Delay
t2
83
83
ns
BUSY LOW Time
t3
4.0
8.0
µs
BUSY Delay after End of Conversion
t4
50
50
ns
Aperture Delay
t5
40
40
ns
Conversion Time
t6
3.8
4.0
7.6
8.0
µs
Acquisition Time
t7
1.0
2.0
µs
Throughput Time
t6 + t7
510
µs
R/
C Low to DATACLK Delay
t8
220
350
ns
DATACLK Period
t9
220
450
ns
DATA Valid Setup Time
t10
50
100
ns
DATA Valid Hold Time
t11
20
20
ns
EXT. DATACLK Period
t12
66
100
ns
EXT. DATACLK HIGH
t13
20
20
ns
EXT. DATACLK LOW
t14
30
30
ns
R/
C, CS to EXT. DATACLK Setup Time
t15
20
t12 + 5
20
t12 + 5
ns
R/
C to CS Setup Time
t16
10
10
ns
EXT. DATACLK to SYNC Delay
t17
15
66
15
66
ns
EXT. DATACLK to DATA Valid Delay
t18
25
66
25
66
ns
CS to EXT. DATACLK Rising Edge Delay
t19
10
10
ns
Previous DATA Valid after
CS, R/C Low
t20
3.5
7.5
µs
BUSY to EXT. DATACLK Setup Time
t21
55
ns
Final EXT. DATACLK to
BUSY Rising Edge
t22
1.7
3.5
µs
TAG Valid Setup Time
t23
00
ns
TAG Valid Hold Time
t24
20
20
ns
Specifications subject to change without notice.
(AD977A: FS = 200 kHz, AD977: FS = 100 kHz, VDIG = VANA = 5 V, –40 C to +85 C)


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