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參數(shù)資料
| 型號： | AD1671KQ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 11/16頁 |
| 文件大小： | 0K |
| 描述： | IC ADC SNGL 12BIT 28-CDIP |
| 標準包裝： | 1 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 1.25M |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 功率耗散（最大）： | 750mW |
| 電壓電源： | 模擬和數(shù)字，雙 ± |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 28-CDIP（0.600"，15.24mm） |
| 供應(yīng)商設(shè)備封裝： | 28-CDIP |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 2 個單端，雙極；2 個單端，單極 |
AD1671
REV. B
–4–
PIN DESCRIPTION
Symbol
Pin No.
Type
Name and Function
ACOM
27
P
Analog Ground.
AIN
22, 23
AI
Analog Inputs, AIN1 and AIN2. The AD1671 can be pin strapped for four input ranges:
Range
Pin Strap
Signal Input
0 to +2.5 V,
±2.5 V
Connect AIN1 to AIN2
AIN1 or AIN2
0 to +5 V,
±5 V
Connect AIN1 or AIN2 to ACOM
AIN1 or AIN2
BIT 1 (MSB)
13
DO
Most Significant Bit.
BIT 2–BIT 11
12-3
DO
Data Bits 2 through 11.
BIT 12 (LSB)
2
DO
Least Significant Bit.
BPO/UPO
26
AI
Bipolar or Unipolar Configuration Pin. See section on Input Range Connections for details.
DAV
16
DO
Data Available Output. The rising edge of DAV indicates an end of conversion and can be used
to latch current data into an external register. The falling edge of DAV can be used to latch
previous dam into an external register.
DCOM
19
P
Digital Ground.
ENCODE
17
DI
The analog input is sampled on the rising edge of ENCODE.
MSB
14
DO
Inverted Most Significant Bit. Provides twos complement output data format.
OTR
15
DO
Out of Range is Active HIGH when the analog input is out of range. See Output Data Format,
Table III.
REF COM
20
AI
REF COM is the internal reference ground pin. REF COM should be connected as indicated
in the Grounding and Decoupling Rules and Optional External Reference Connection Sections.
REF IN
24
AI
REF IN is the external 2.5 V reference input.
REF OUT
21
AO
REF OUT is the internal 2.5 V reference output.
SHA OUT
25
AO
No Connect for bipolar input ranges. Connect SHA OUT to BPO/UPO for unipolar input ranges.
VCC
28
P
+5 V Analog Power.
VEE
1
P
–5 V Analog Power.
VLOGIC
18
P
+5 V Digital Power.
TYPE: AI = Analog Input; AO = Analog Output; DI = Digital Input; DO = Digital Outputs; P = Power.
PIN CONFIGURATION
ACOM
BPO/UPO
DCOM
ENCODE
DAV
OTR
MSB
BIT 12 (LSB)
BIT 11
BIT 10
BIT 9
BIT 8
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1 (MSB)
AIN1
REF COM
REF OUT
AIN2
SHA OUT
1
2
3
7
28
27
26
22
8
9
10
21
20
19
11
12
18
17
4
5
25
24
6
23
TOP VIEW
(Not to Scale)
13
14
16
15
AD1671
VEE
VCC
V
LOGIC
REF IN
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