ADR445 datasheet(10/44 Pages) AD

tên linh kiện	ADR445

Giải thích chi tiết về linh kiện	Quad-Channel, 12-Bit, Serial Input, 4 mA to 20 mA Output

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10 / 44 page

AD5737

Data Sheet

Rev. B | Page 10 of 44

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

RSET_B

RSET_A

REFGND

AD0

AD1

SYNC

SCLK

SDIN

SDO

DVDD

DGND

LDAC

CLEAR

ALERT

FAULT

COMPDCDC_C

IOUT_C

VBOOST_C

AVCC

SWC

GNDSWC

GNDSWD

SWD

AGND

SWA

GNDSWA

GNDSWB

SWB

AGND

VBOOST_B

IOUT_B

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

AD5737

TOP VIEW

(Not to Scale)

PIN 1

INDICATOR

NOTES

1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.

2. THE EXPOSED PADDLE SHOULD BE CONNECTED TO AGND, OR, ALTERNATIVELY,

IT CAN BE LEFT ELECTRICALLY UNCONNECTED. IT IS RECOMMENDED THAT

THE PADDLE BE THERMALLY CONNECTED TO A COPPER PLANE FOR ENHANCED

THERMAL PERFORMANCE.

Figure 7. Pin Configuration

Table 6. Pin Function Descriptions

Pin No.

Mnemonic

Description

1

RSET_B

An external, precision, low drift, 15 kΩ current setting resistor can be connected to this pin to improve the

IOUT_B temperature drift performance. For more information, see the External Current Setting Resistor section.

2

RSET_A

An external, precision, low drift, 15 kΩ current setting resistor can be connected to this pin to improve the

IOUT_A temperature drift performance. For more information, see the External Current Setting Resistor section.

3

REFGND

Ground Reference Point for Internal Reference.

4

REFGND

Ground Reference Point for Internal Reference.

5

AD0

Address Decode for the Device Under Test (DUT) on the Board.

6

AD1

Address Decode for the DUT on the Board.

7

SYNC

Frame Synchronization Signal for the Serial Interface. Active low input. When SYNC is low, data is clocked

into the input shift register on the falling edge of SCLK.

8

SCLK

Serial Clock Input. Data is clocked into the input shift register on the falling edge of SCLK. The serial interface

operates at clock speeds of up to 30 MHz.

9

SDIN

Serial Data Input. Data must be valid on the falling edge of SCLK.

10

SDO

Serial Data Output. Used to clock data from the serial register in readback mode (see Figure 4 and Figure 5).

11

DVDD

Digital Supply Pin. The voltage range is from 2.7 V to 5.5 V.

12

DGND

Digital Ground.

13

LDAC

Load DAC. This active low input is used to update the DAC register and, consequently, the DAC outputs.

When LDAC is tied permanently low, the addressed DAC data register is updated on the rising edge of

SYNC. If LDAC is held high during the write cycle, the DAC input register is updated, but the DAC output

is updated only on the falling edge of LDAC (see Figure 3). Using this mode, all analog outputs can be

updated simultaneously. The LDAC pin must not be left unconnected.

Số phần tương tự - ADR445

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Analog Devices	ADR445	568Kb / 20P	Ultralow Noise, LDO XFET Voltage References with Current Sink and Source REV. A
	ADR445	403Kb / 20P	Ultralow Noise, LDO XFET Voltage References with Current Sink and Source Rev. E
	ADR445	1Mb / 48P	Quad-Channel, 12-Bit, Serial Input, 4 mA to 20 mA REV. B
	ADR445	993Kb / 32P	Ultralow Noise, High Accuracy REV. 0
	ADR445A	568Kb / 20P	Ultralow Noise, LDO XFET Voltage References with Current Sink and Source REV. A

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