AD7846KPZ-REEL datasheet(7/24 Pages) AD

부품명	AD7846KPZ-REEL

상세설명	LC2MOS 16-Bit Voltage Output DAC

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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

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

+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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Analog Devices	AD7846KP	616Kb / 16P	16-Bit Voltage Output DAC REV. E

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