Rainbow-electronics MAX5887 Manual de usuario descargar pdf (Pagina 7)

MAX5887

3.3V, 14-Bit, 500Msps High Dynamic

Performance DAC with Differential LVDS Inputs

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Pin Description

PIN NAME FUNCTION

1 B1P Data Bit 1

2 B1N Complementary Data Bit 1

3 B0P Data Bit 0

4 B0N Complementary Data Bit 0

5–8, 23,

34–38

N.C. No Connection. Do not connect to these pins. Do not tie these pins together.

9, 41, 60, 62

DGND Digital Ground

10, 40, 61

Digital Supply Voltage. Accepts a supply voltage range of 3.135V to 3.465V. Bypass each pin with a

0.1µF capacitor to the nearest DGND.

11, 16 VCLK

Clock Supply Voltage. Accepts a supply voltage range of 3.135V to 3.465V. Bypass each pin with a

0.1µF capacitor to the nearest CLKGND.

12, 15

CLKGND

Clock Ground

13 CLKP Converter Clock Input. Positive input terminal for the LVDS-compatible differential converter clock.

14 CLKN

Complementary Converter Clock Input. Negative input terminal for the LVDS-compatible differential

converter clock.

17 PD

Power-Down Input. PD pulled high enables the DAC’s power-down mode. PD pulled low allows for

normal operation of the DAC. This pin features an internal pulldown resistor.

18, 24, 29,

30, 32

Analog Supply Voltage. Accepts a supply voltage range of 3.135V to 3.465V. Bypass each pin with a

0.1µF capacitor to the nearest AGND.

19, 25, 28,

31, 33, EP

AGND Analog Ground. Exposed paddle (EP) must be connected to AGND.

20 REFIO

Reference I/O. Output of the internal 1.2V precision bandgap reference. Bypass with a 1µF capacitor

to AGND. Can be driven with an external reference source.

21 FSADJ

Full-Scale Adjust Input. This input sets the full-scale output current of the DAC. For 20mA full-scale

output current, connect a 2kΩ resistor between FSADJ and DACREF.

22 DACREF

Return Path for the Current Set Resistor. For 20mA full-scale output current, connect a 2kΩ resistor

between FSADJ and DACREF.

26 IOUTN

Complementary DAC Output. Negative terminal for differential current output. The full-scale output

current range can be set from 2mA to 20mA.

27 IOUTP

DAC Output. Positive terminal for differential current output. The full-scale output current range can

be set from 2mA to 20mA.

39 SEL0

Mode Select Input SEL0. Set high to activate the segment shuffling function. Since this pin features an

internal pulldown resistor, it can be left open or pulled low to disable the segment-shuffling function.

See Segment Shuffling in the Detailed Description section for more information.

42 B13P Data Bit 13 (MSB)

43 B13N Complementary Data Bit 13 (MSB)

44 B12P Data Bit 12

1 2 3 4 5 6 7 8 9 10 11 12 ... 17 18

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Rainbow-electronics MAX5887 Manual de usuario Pagina 7

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