VSS
參數(shù)資料
型號(hào): AD7248JNZ
廠商: Analog Devices Inc
文件頁(yè)數(shù): 13/16頁(yè)
文件大?。?/td> 0K
描述: IC DAC 12BIT W/REF 20-DIP
產(chǎn)品培訓(xùn)模塊: Data Converter Fundamentals
DAC Architectures
標(biāo)準(zhǔn)包裝: 18
系列: DACPORT®
設(shè)置時(shí)間: 7µs
位數(shù): 12
數(shù)據(jù)接口: 并聯(lián)
轉(zhuǎn)換器數(shù)目: 1
電壓電源: 雙 ±
功率耗散(最大): 210mW
工作溫度: -40°C ~ 85°C
安裝類型: 通孔
封裝/外殼: 20-DIP(0.300",7.62mm)
供應(yīng)商設(shè)備封裝: 20-PDIP
包裝: 管件
輸出數(shù)目和類型: 1 電壓,單極;1 電壓,雙極
采樣率(每秒): *
產(chǎn)品目錄頁(yè)面: 784 (CN2011-ZH PDF)
AD7245A/AD7248A
REV. B
–6–
AD7248A PIN FUNCTION DESCRIPTIONS
(ANY PACKAGE)
Pin
Mnemonic
Description
l
VSS
Negative Supply Voltage (0 V for single
supply operation).
2
ROFS
Bipolar Offset Resistor. This provides
access to the on-chip application resistors
and allows different output voltage ranges.
3
REF OUT
Reference Output. The on-chip reference
is provided at this pin and is used when
configuring the part for bipolar outputs.
4
AGND
Analog Ground.
5
DB7
Data Bit 7.
6
DB6
Data Bit 6.
7
DB5
Data Bit 5.
8
DB4
Data Bit 4.
9
DB3
Data Bit 3.
10
DGND
Digital Ground.
11
DB2
Data Bit 2/Data Bit 10.
12
DB1
Data Bit 1/Data Bit 9.
13
DB0
Data Bit 0 (LSB)/Data Bit 8.
Pin
Mnemonic
Description
14
CSMSB
Chip Select Input for MS Nibble. (Active
LOW). This selects the upper 4 bits of the
input latch. Input data is right justified.
15
CSLSB
Chip Select Input for LS byte. (Active
LOW). This selects the lower 8 bits of the
input latch.
16
WR
Write Input. This is used in conjunction
with
CSMSB and CSLSB to load data
into the input latch of the AD7248A.
17
LDAC
Load DAC Input (Active LOW). This is
an asynchronous input which when active
transfers data from the input latch to the
DAC latch.
18
VDD
Positive Supply Voltage.
19
RFB
Feedback Resistor. This allows access to
the amplifier’s feedback loop.
20
VOUT
Output Voltage. Three different output
voltage ranges can be chosen: 0 V to
5 V,
0 V to 10 V or –5 V to +5 V.
AD7248A PIN CONFIGURATIONS
DIP and SOIC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
AD7248A
TOP VIEW
(NOT TO SCALE)
VSS
ROFS
REF OUT
AGND
(MSB) DB7
DB6
DB5
DB4
DB3
DGND
DB2
DB1
DB0 (LSB)
CSLSB
WR
LDAC
VDD
RFB
VOUT
CSMSB
LCCC
TOP VIEW
(NOT TO SCALE)
20 19
1
2
3
18
14
15
16
17
4
5
6
7
8
910 11 12 13
AGND
(MSB) DB7
DB6
DB5
DB4
CSMSB
CSLSB
WR
LDAC
VDD
R
FB
V
OUT
V
SS
R
OFS
REF
OUT
AD7248A
(LSB)
DB0
DB1
DB2
DGND
DB3
PLCC
AGND
(MSB) DB7
DB6
DB5
DB4
CSMSB
CSLSB
WR
LDAC
VDD
R
FB
V
OUT
V
SS
R
OFS
REF
OUT
2
1
20
19
9
10
11
12
13
18
17
16
15
14
4
5
6
7
8
TOP VIEW
(NOT TO SCALE)
PIN 1
IDENTIFIER
AD7248A
(LSB)
DB0
DB1
DB2
DGND
DB3
3
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