3.3V, 14-Bit, 500Msps High Dynamic

Performance DAC with Differential LVDS Inputs

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9

Analog Outputs (IOUTP, IOUTN)

The MAX5887 outputs two complementary currents

(IOUTP, IOUTN) that can be operated in a single-

ended or differential configuration. A load resistor can

convert these two output currents into complementary

single-ended output voltages. The differential voltage

existing between IOUTP and IOUTN can also be con-

verted to a single-ended voltage using a transformer or

a differential amplifier configuration. If no transformer is

used, the output should have a 50Ω termination to the

analog ground and a 50Ω resistor between the outputs.

Although not recommended for single-ended operation,

because of additional noise pickup from the ground

1.2V

REFERENCE

CURRENT-STEERING

DAC

FUNCTION

SELECTION

BLOCK

AGND

SEL0

DGND

REFIO

FSADJ

CLKN

CLKP

PD

IOUTP

IOUTN

SEGMENT SHUFFLING/LATCH

DECODER

LVDS RECEIVER/INPUT LATCH

14

DIFFERENTIAL DIGITAL INPUTS B0 THROUGH B13

MAX5887

Figure 1. Simplified MAX5887 Block Diagram

Ω)

FULL-SCALE CURRENT

REFERENCE CURRENT

CALCULATED

1% EIA STD

OUTPUT VOLTAGE

2

62.5

19.2

19.1

100

5

156.25

7.68

7.5

250

10

312.5

3.84

3.83

500

15

468.75

2.56

2.55

750

20

625

1.92

1.91

1000

*Terminated into a 50Ω load.