AD9071 View Datasheet(PDF) - Analog Devices
Part Name
Description
MFG CO.
'AD9071' PDF : 12 Pages View PDF
AD9071
Model
AD9071BR
AD9071/PCB
ORDERING GUIDE
Temperature Range
–40°C to +85°C
25°C
Package Description
28-Lead Wide Body (SOIC)
Evaluation Board
Package Option
R-28
Pin No.
1, 7, 12, 21, 23
2, 8, 11
3
4
5, 6
9
10
13
14
15–19, 24–28
20, 22
Mnemonic
GND
VCC
VREF OUT
VREF IN
DNC
AIN
AIN
ENCODE
OR
D9–D0
VDD
PIN FUNCTION DESCRIPTIONS
Function
Ground
Analog Power Supply. Nominally 5.0 V. (Tie together to prevent a possible latch-up condition.)
Internal Reference Output (VCC – 2.5 V typical); Bypass with 0.1 µF to VCC.
Reference Input for ADC (VCC – 2.5 V typical).
Do Not Connect
Analog Input – Complementary
Analog Input – True
Encode clock for ADC. (ADC Samples on Rising Edge of ENCODE.)
Out-of-Range Output. Goes HIGH when the converted sample is more positive than
3FFH or more negative than 000H (offset binary coding).
Digital outputs of ADC. D9 is the MSB. Data is offset binary.
Digital Output Power Supply. User selectable range from 3 V to 5 V.
PIN CONFIGURATION
GND 1
28 D0
VCC 2
VREF OUT 3
27 D1
26 D2
VREF IN 4
NC 5
25 D3
24 D4
NC 6 AD9071BR 23 GND
GND 7 TOP VIEW 22 VDD
(Not to Scale)
VCC 8
21 GND
AIN 9
20 VDD
AIN 10
19 D5
VCC 11
18 D6
GND 12
17 D7
ENCODE 13
16 D8
OR 14
15 D9 (MSB)
NC = NO CONNECT
Code
1023
1023
1022
•
•
•
513
512
511
•
•
•
1
0
0
Table I. Output Coding
AIN–AIN
≥ 0.512 V
0.511 V
0.510 V
•
•
•
0.001 V
0.000 V
–0.001 V
•
•
•
–0.511 V
–0.512 V
≤–0.513 V
Offset
Binary
OR
11 1111 1111
1
11 1111 1111
0
11 1111 1110
0
•
•
•
•
•
•
10 0000 0001
0
10 0000 0000
0
01 1111 1111
0
•
•
•
•
•
•
00 0000 0001
0
00 0000 0000
0
00 0000 0000
1
–4–
REV. C
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