AD9780 データシートの表示（PDF） - Analog Devices

部品番号

コンポーネント説明

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AD9780

Dual 12-/14-/16-Bit, LVDS Interface, 500 MSPS DACs

Analog Devices 

AD9780/AD9781/AD9783

Data Sheet

CVDD18 1

CVSS 2

CLKP 3

CLKN 4

CVSS 5

CVDD18 6

DVSS 7

DVDD18 8

D13P 9

D13N 10

D12P 11

D12N 12

D11P 13

D11N 14

D10P 15

D10N 16

D9P 17

D9N 18

PIN 1

INDICATOR

AD9781

(TOP VIEW)

54 FS ADJ

53 RESET

52 CSB

51 SCLK

50 SDIO

49 SDO

48 DVSS

47 DVDD18

46 NC

45 NC

44 NC

43 NC

42 D0N

41 D0P

40 D1N

39 D1P

38 D2N

37 D2P

NOTES

1. NC = NO CONNECT

2. EXPOSED PAD MUST BE

SOLDERED TO PCB AND

CONNECTED TO AVSS.

Figure 3. AD9781 Pin Configuration

Table 7. AD9781 Pin Function Descriptions

Pin No.

Mnemonic

Description

1, 6

CVDD18

Clock Supply Voltage (1.8 V).

2, 5

CVSS

Clock Supply Return.

3, 4

CLKP, CLKN

Differential DAC Sampling Clock Input.

7, 28, 48

DVSS

Digital Common.

8, 47

DVDD18

Digital Supply Voltage (1.8 V).

9 to 24, 31 to 42 D13P, D13N to D0P, D0N Data Inputs. D13 is the MSB, D0 is the LSB.

25, 26

DCOP, DCON

Differential Data Clock Output. Clock at the DAC sample rate.

27

DVDD33

Digital Input and Output Pad Ring Supply Voltage (3.3 V).

29, 30

DCIP, DCIN

Differential Data Clock Input. Clock aligned with input data.

43 to 46

NC

No Connection. Leave these pins floating.

49

SDO

Serial Port Data Output.

50

SDIO

Serial Port Data Input (4-Wire Mode) or Bidirectional Serial Data Line (3-Wire Mode).

51

SCLK

Serial Port Clock Input.

52

CSB

Serial Port Chip Select (Active Low).

53

RESET

Chip Reset (Active High).

54

FS ADJ

Full-Scale Current Output Adjust.

55

REFIO

Analog Reference Input/Output (1.2 V Nominal).

56, 57, 71, 72

AVDD33

Analog Supply Voltage (3.3 V).

58, 61, 64, 67, 70 AVSS

Analog Common.

59

IOUT2P

DAC Current Output. Full-scale current is sourced when all data bits are 1s.

60

IOUT2N

Complementary DAC Current Output. Full-scale current is sourced when all data bits are 0s.

62, 63

AUX2P, AUX2N

Differential Auxiliary DAC Current Output (Channel 2).

65, 66

AUX1N, AUX1P

Differential Auxiliary DAC Current Output (Channel 1).

68

IOUT1N

Complementary DAC Current Output. Full-scale current is sourced when all data bits are 0s.

69

IOUT1P

DAC Current Output. Full-scale current is sourced when all data bits are 1s.

Heat Sink Pad

N/A

The heat sink pad on the bottom of the package should be soldered to the PCB plane that

carries AVSS.

Rev. B | Page 8 of 32

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