参数资料
型号: AD871JE
厂商: ANALOG DEVICES INC
元件分类: ADC
英文描述: Complete 12-Bit 5 MSPS Monolithic A/D Converter
中文描述: 1-CH 12-BIT FLASH METHOD ADC, PARALLEL ACCESS, CQCC44
封装: CERAMIC, LCC-44
文件页数: 5/16页
文件大小: 378K
代理商: AD871JE
AD871
REV. A
–5–
PIN FUNCTION DESCRIPTIONS
DIP
Pin No.
LCC
Pin No.
Symbol
Type
Name and Function
V
INA
V
INB
AV
SS
AV
DD
AGND
DGND
DV
DD
BIT 12 (LSB)
BIT 2–BIT 11
MSB
1
2
3, 25
4
5, 24
6, 23
7, 22
8
18–9
19
1
2
5, 40
6, 38
9, 36
10
33
16
26–17
29
AI
AI
P
P
P
P
P
DO
DO
DO
(+) Analog Input Signal on the differential input amplifier.
(–) Analog Input Signal on the differential input amplifier.
–5 V Analog Supply.
+5 V Analog Supply.
Analog Ground.
Digital Ground.
+5 V Digital Supply.
Least Significant Bit.
Data Bits 2 through 11.
Inverted Most Significant Bit. Provides twos complement output
data format.
Out of Range is Active HIGH on the leading edge of code 0 or
the trailing edge of code 4096. See Output Data Format Table III.
Clock Input. The AD871 will initiate a conversion on the rising
edge of the clock input. See the Timing Diagram for details.
+2.5 V Reference Output. Tie to REF IN for normal operation.
Reference Ground.
Reference Input. +2.5 V input gives
±
1 V full-scale range.
Most Significant Bit.
+5 V Digital Supply for the output drivers.
Digital Ground for the output drivers.
(See section on Power Supply Decoupling for details on
DRV
DD
and DRGND.)
Output Enable. See the Three State Output Timing Diagram for details.
No Connect.
OTR
20
30
DO
CLK
21
31
DI
REF OUT
REF GND
REF IN
BIT 1 (MSB)
DRV
DD
DRGND
26
27
28
N/A
N/A
N/A
41
42
43
27
12, 32
11, 34
AO
AI
AI
DO
P
P
OEN
NC
N/A
N/A
13
3, 4, 7, 8, 14, 15,
28, 35, 37, 39, 44
DI
TYPE: AI = Analog Input; AO = Analog Output; DI = Digital Input; DO = Digital Output; P = Power; N/A = Not Available on 28-lead DIP, available only on
44-terminal surface mount package.
PIN CONFIGURATIONS
28-Lead Side Brazed Ceramic DIP
TOP VIEW
(Not to Scale)
AD871
BIT 11
BIT 12 (LSB)
V
INA
V
INB
AV
SS
AV
DD
DV
DD
DGND
AGND
OTR
CLK
REF IN
REF GND
REF OUT
AV
SS
AGND
DV
DD
MSB
BIT 10
BIT 9
BIT 8
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
DGND
44-Terminal LCC
39
38
37
36
35
34
33
32
31
30
29
18 19 20 21 22 23 24 25 26 27 28
B
7
8
9
10
11
12
13
14
15
16
17
6 5 4 3 2 1 44 43 42 41 40
PIN 1
TOP VIEW
(Not to Scale)
NC = NO CONNECT
NC
AV
DD
NC
AGND
NC
DRGND
DV
DD
DRV
DD
CLK
OTR
MSB
NC
NC
AGND
DGND
DRGND
DRV
DD
OEN
NC
NC
BIT 12 (LSB)
BIT 11
A
D
A
S
N
N
V
I
V
I
N
B
B
B
B
B
B
B
B
N
B
R
R
R
A
S
AD871
相关PDF资料
PDF描述
AD871SD Complete 12-Bit 5 MSPS Monolithic A/D Converter
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