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AD7846JPZ Folha de dados(PDF) 7 Page - Analog Devices

Nome de Peças AD7846JPZ
Descrição Electrónicos  LC2MOS 16-Bit Voltage Output DAC
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

AD7846JPZ Folha de dados(HTML) 7 Page - Analog Devices

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AD7846
Rev. G | Page 7 of 24
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
TOP VIEW
(Not to Scale)
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
AD7846
DB11
DB12
DB13
DB14
DB15
DB2
DB1
DB0
VDD
VCC
VSS
VOUT
VREF+
VREF–
RIN
DB10
DB9
DB8
DB7
DB6
DGND
DB3
DB4
DB5
LDAC
R/W
CS
CLR
Figure 7. PDIP Pin Configuration
25
24
23
22
21
20
19
5
6
7
8
9
10
11
4
3
2
1
28 27 26
PIN 1
IDENTIFIER
TOP VIEW
(Not to Scale)
12 13 14 15 16 17 18
LDAC
CLR
CS
R/W
DGND
DB6
VOUT
VREF+
VREF–
RIN
VSS
DB15
DB14
AD7846
VCC
Figure 8. CERDIP Pin Configuration
Table 5. Pin Function Descriptions
Pin
Mnemonic
Description
1 to 3
DB2 to DB0
Data I/Os. DB0 is LSB.
4
VDD
Positive Supply for Analog Circuitry. This is +15 V nominal.
5
VOUT
DAC Output Voltage.
6
RIN
Input to Summing Resistor of DAC Output Amplifier. This is used to select output voltage ranges. See Table 6.
7
VREF+
VREF+ Input. The DAC is specified for VREF+ = +5 V.
8
VREF−
VREF− Input. For unipolar operation connect VREF− to 0 V, and for bipolar operation connect it to −5 V. The device is
specified for both conditions.
9
VSS
Negative Supply for the Analog Circuitry. This is −15 V nominal.
10 to 19
DB15 to DB6
Data I/Os. DB15 is MSB.
20
DGND
Ground for Digital Circuitry.
21
VCC
Positive Supply for Digital Circuitry. This is +5 V nominal.
22
R/W
R/W Input. This pin can be used to load data to the DAC or to read back the DAC latch contents.
23
CS
Chip Select Input. This pin selects the device.
24
CLR
Clear Input. The DAC can be cleared to 000…000 or 100…000. See Table 7.
25
LDAC
Asynchronous Load Input to DAC.
26 to 28
DB5 to DB3
Data I/Os.
Table 6. Output Voltage Ranges
Output Range
VREF+
VREF−
RIN
0 V to +5 V
+5 V
0 V
VOUT
0 V to +10 V
+5 V
0 V
0 V
+5 V to −5 V
+5 V
−5 V
VOUT
+5 V to −5 V
+5 V
0 V
+5 V
+10 V to −10 V
+5 V
−5 V
0 V


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