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參數(shù)資料
型號: AD7225LR
廠商: Analog Devices Inc
文件頁數(shù): 21/24頁
文件大?。?/td> 0K
描述: IC DAC 8BIT QUAD W/AMP 24-SOIC
產(chǎn)品培訓(xùn)模塊: Data Converter Fundamentals
DAC Architectures
標(biāo)準(zhǔn)包裝: 31
設(shè)置時間: 4µs
位數(shù): 8
轉(zhuǎn)換器數(shù)目: 4
電壓電源: 雙 ±
功率耗散(最大): 500mW
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 24-SOIC W
包裝: 管件
輸出數(shù)目和類型: 4 電壓,單極;4 電壓,雙極
采樣率(每秒): 200k
AD7225
Rev. C | Page 6 of 24
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
VOUTB 1
VOUTA 2
VSS 3
VREFB 4
VOUTC
24
VOUTD
23
VDD
22
VREFC
21
VREFA 5
VREFD
20
AGND
6
A0
19
DGND
7
A1
18
LDAC
8
WR
17
DB7
9
DB0
16
DB6 10
DB1
15
DB5 11
DB2
14
DB4 12
DB3
13
AD7225
TOP VIEW
(Not to Scale)
00986-
002
1
28
27
26
2
3
4
5
6
7
8
9
10
11
25
24
23
22
21
20
19
NC = NO CONNECT
VREFB
VREFA
AGND
NC
DGND
LDAC
DB7
VREFC
VREFD
A0
NC
A1
WR
DB0
V
SS
V
O
UT
A
V
O
UT
B
NC
V
O
UT
C
V
O
UT
D
V
DD
DB6
DB5
DB4
NC
DB3
DB2
DB1
PIN 1
INDENTFIER
12
13
14
15
16
17
18
AD7225
TOP VIEW
(Not to Scale)
00986-
003
Figure 2. PDIP, SOIC, CERDIP, and SSOP
Figure 3. PLCC
Table 4. Pin Function Descriptions
Pin No.
Mnemonic
Description
PDIP, SOIC,
CERDIP, SSOP
PLCC
1
2
VOUTB
DAC Channel B Voltage Output.
2
3
VOUTA
DAC Channel A Voltage Output.
3
4
VSS
Negative Power Supply Connection.
4
5
VREFB
Reference Voltage Connection for DAC Channel B.
5
6
VREFA
Reference Voltage Connection for DAC Channel A.
6
7
AGND
Analog Ground Reference Connection.
7
9
DGND
Digital Ground Reference Connection.
8
10
LDAC
Active Low Load DAC Signal. DAC register data is latched on the rising edge of LDAC.
9
11
DB7
Data Bit 7 (Most Significant Data Bit).
10
12
DB6
Data Bit 6.
11
13
DB5
Data Bit 5.
12
14
DB4
Data Bit 4.
13
16
DB3
Data Bit 3.
14
17
DB2
Data Bit 2.
15
18
DB1
Data Bit 1.
16
19
DB0
Data Bit 0 (Least Significant Data Bit).
17
20
WR
Active Low Data Write Signal. Input register data is latched on the rising edge of WR.
18
21
A1
DAC Address Select Pin.
19
23
A0
DAC Address Select Pin.
20
24
VREFD
Reference Voltage Connection for DAC Channel D.
21
25
VREFC
Reference Voltage Connection for DAC Channel C.
22
26
VDD
Positive Power Supply Connection.
23
27
VOUTD
DAC Channel D Voltage Output.
24
28
VOUTC
DAC Channel C Voltage Output.
N/A
1, 8, 15, 22
NC
No Internal Connection.
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