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參數(shù)資料
| 型號(hào)： | AD7247AAR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類(lèi)： | DAC |
| 英文描述： | 0.1UF 50V 10% 0805 X7R CERAMIC CAPACITOR |
| 中文描述： | DUAL, PARALLEL, WORD INPUT LOADING, 5 us SETTLING TIME, 12-BIT DAC, PDSO24 |
| 封裝： | SOIC-24 |
| 文件頁(yè)數(shù)： | 5/12頁(yè) |
| 文件大?。?/td> | 392K |
| 代理商： | AD7247AAR |
AD7237A/AD7247A
REV. 0
–5–
AD7247A PIN FUNCTION DESCRIPTION (DIP PIN NUMBERS)
Pin
Mnemonic
Description
1
REF OUT
Voltage Reference Output. The internal 5 V analog reference is provided at this pin. To operate the part
with internal reference, REF OUT should be connected to REF IN.
2
R
OFSB
Output Offset Resistor for DAC B. This input configures the output ranges for DAC B. It is connected to
V
OUTB
for the +5 V range, to GND for the +10 V range and to REF IN for the
±
5 V range.
3
V
OUTB
Analog Output Voltage from DAC B. This is the buffer amplifier output voltage. Three different output
voltage ranges can be chosen: 0 V to +5 V, 0 V to +10 V and
±
5 V. The amplifier is capable of developing
+10 V across a 2 k
resistor to GND.
4
DB11
Data Bit 11 (MSB).
5
DB10
Data Bit 10.
6
GND
Ground. Ground reference for all on-chip circuitry.
7–15
DB9-DB1
Data Bit 9 to Data Bit 1.
16
DB0
Data Bit 0 (LSB).
17
CSB
Chip Select Input for DAC B. Active low logic input. DAC B is selected when this input is active.
18
CSA
Chip Select Input for DAC A. Active low logic input. DAC A is selected when this input is active.
19
WR
Write Input.
WR
is an active low logic input which is used in conjunction with
CSA
and
CSB
to write data
to the DAC latches.
20
V
DD
Positive Supply (+12 V to +15 V).
21
V
OUTA
Analog Output Voltage from DAC A. This is the buffer amplifier output voltage. Three different output
voltage ranges can be chosen: 0 V to +5 V, 0 V to +10 V and
±
5 V. The amplifier is capable of developing
+10 V across a 2 k
resistor to GND.
22
V
SS
Negative Supply (0 V or –12 V to –15 V).
23
R
OFSA
Output Offset Resistor for DAC A. This input configures the output ranges for DAC A. It is connected to
V
OUTA
for the +5 V range, to GND for the +10 V range and to REF IN for the
±
5 V range.
24
REF IN
Voltage Reference Input. The common reference voltage for both DACs is applied to this pin. It is internally
buffered before being applied to both DACs. The nominal reference voltage for correct operation of the
AD7247A is 5 V.
AD7237A PIN CONFIGURATION
DIP and SOIC
AD7247A PIN CONFIGURATION
DIP and SOIC
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