Dual 8-Bit, 300Msps DAC with 4x/2x/1x

Interpolation Filters and PLL

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11

DYNAMIC RESPONSE FALL TIME

MAX5856A toc30

10ns/div

Ω

SINGLE ENDED

200mV/div

DYNAMIC RESPONSE RISE TIME

MAX5856A toc29

10ns/div

200mV/div

Ω

SINGLE ENDED

Typical Operating Characteristics (continued)

Pin Description

PIN

NAME

FUNCTION

1

DA7/PD

Channel A Input Data Bit 7 (MSB)/Power-Down Control Bit:

0: Enter DAC standby mode (DACEN = 0) or power up DAC (DACEN = 1).

1: Enter power-down mode.

2

DA6/DACEN

Channel A Input Data Bit 6/DAC Enable Control Bit:

0: Enter DAC standby mode with PD = 0.

1: Power up DAC with PD = 0.

X: Enter power-down mode with PD = 1 (X = don’t care).

3

DA5/F2EN

Channel A Input Data Bit 5/Second Interpolation Filter Enable Bit:

0: Interpolation mode is determined by F1EN.

1: Enable 4x interpolation mode. (F1EN must equal 1.)

4

DA4/F1EN

Channel A Input Data Bit 4/First Interpolation Filter Enable Bit:

0: Interpolation disable.

1: Enable 2x interpolation.

5

DA3/G3

Channel A Input Data Bit 3/Channel A Gain Adjustment Bit 3

6, 19, 47

DGND

Digital Ground

7, 18, 48

DVDD

Digital Power Supply. See Power Supplies, Bypassing, Decoupling, and Layout section.

8

DA2/G2

Channel A Input Data Bit 2/Channel A Gain Adjustment Bit 2

9

DA1/G1

Channel A Input Data Bit 1/Channel A Gain Adjustment Bit 1

10

DA0/G0

Channel A Input Data Bit 0/Channel A Gain Adjustment Bit 0

11, 12, 25,

26, 37, 38

N.C.

No Connection. Not connected internally.

13

DB7

Channel B Input Data Bit 7 (MSB)

14

DB6

Channel B Input Data Bit 6